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. 2021 Jun 11;34(3):654–662. doi: 10.1007/s42535-021-00229-7

Ethnobotanical and ethnomedicinal analysis of wild medicinal plants traditionally used in Naâma, southwest Algeria

Miloud Bouafia 1,2,6,✉, Fouzia Amamou 3, Mohamed Gherib 2, Mohammed Benaissa 4, Rachid Azzi 1, Saïd Nemmiche 5
PMCID: PMC8192681  PMID: 34131369

Abstract

Algerian people largely rely on traditional medicine practices as part of a community’s identity. This first ethnobotanical study aimed to quantify and document the wild medicinal plant taxa from four family and the related traditional knowledge in Naâma province, Algeria. The survey was carried out between 2018 and 2020. The socio-demographic data and the use of medicinal species were recorded and collected randomly from 84 indigenous people using pre-prepared questionnaire. The result was evaluated using quantitative indices. A total of 27 medicinal plant species belonging to 21 genera used in the community were mostly recorded. The most represented families were Lamiaceae and Asteraceae (12 species for each of them). The aerial parts were the most frequently used plant part (73 %), while a decoction (34 %), and infusion (31 %) were the major modes of remedy preparation. The species with high UV were Rosmarinus officinalis L. (0.80), Artemisia herba-alba Asso (0.76), and Juniperus phoenicea L. subsp. phoenicea (0.75). Species with highest FL were: Ephedra alata subsp. alenda (Stapf) Trab (100 %), Teucrium polium L. (60 %), and Ballota hirsuta Benth (57.14.5 %). Atractylis caespitosa Desf and Nepeta nepetella subsp.amethystina (Poir.) Briq were newly cited as medicinal plants and have not been recorded previously in Algeria. Artemisia herba-alba Asso and Thymus algeriensis Boiss. & Reut were reported to treat COVID-19 symptoms. The results obtained indicate the richness of the area with medicinal plants as well as knowledge of alternative medicine. The most cited plants could be contained molecules that can be tested for therapeutic uses.

Keywords: Medicinal plants, Traditional medicine, Ethnobotanical, Naâma

Introduction

In Algeria, traditional medicine practices are linked to the history of Arab-Muslim medicine in the Maghreb (North Africa). These practices are a model of transmission of Arab-Muslim medicine. Some therapeutic uses are transmitted directly from religious texts and are still relevant as hijâma (Cupping therapy), Ruqyah (Reciting Quran), and phytotherapy (Saad and Said 2010).

Phytotherapy is known since antiquity as the most easily accessible resource and the basis of health care; has evolved across the ages to become an important knowledge of drug discovery. However, no official strategic plan (regulatory or legislative) has been developed in the country for the integration of traditional medicine into the health care system. The Algerian Public Health Code of 23 October 1976 (158) rendered the practice of medicine without a license an offense; apart from Sec. 364 on the practice of herbalists, no exceptions were made for the practice of traditional medicine (WHO 2001). On other hand, the production and marketing of herbal drugs are permissible to a small extent. More than twenty herbal drug products are commercialized in the pharmaceutical market of Algeria (Bouzabata 2017). Due to the geographical position in the south Mediterranean basin, Algeria with its spacious area is characterized by several climatic regions and diversified vegetation; more than 3139 species of wild and naturalized plants growing in the country become part of a community’s identity. Algerian people used part of these species for different purposes, which are reflected in the widespread use of medicinal plants by herbalists, healers, and people to treat several diseases (Miara et al. 2018). Nevertheless, many geographical regions and ethnic communities in this country like the province of Naâma (South-West of Algeria) have still not been explored. It has a reserve of medicinal species, a background of practice in traditional medicine for humans. Unfortunately, the indigenous knowledge of plants in Naâma and other provinces is inherited and transmitted orally from one generation to the next which makes them vulnerable to loss; Besides, the new generation is not interested to archive it from the older generation (Bouasla and Bouasla 2017).

Ethnobotany carrying great importance for several fields and the most ethnobotany’s contributions and challenges are to close the gap between researcher and indigenous knowledge, to understanding how humans perceive their standing within nature, to boost methodological methods to explore plants from diverse disciplines, and to promote inter-generational continuity (Rodríguez-Calderón et al. 2019). Many ethnobotanical studies were undertaken in the Mediterranean region, especially in Algeria have warned against losing some traditional medicinal knowledge. In this framework, there is an urgent need for studying, recording, and sharing this heritage using an ethnobotanical approach survey to protect it. (Tuttolomondo et al. 2014; Bouasla and Bouasla 2017; Eddouks et al. 2017).

This study aimed to document the ethnobotanical knowledge focusing on ethnomedicine in Naâma province, a strategic region of southwest Algeria, bordered by Morocco. We inventoried, for the first time, all medicinal plants taxa from Lamiaceae, Asteraceae, Cupressaceae, and Ephedraceae using as medicine. The traditional therapeutics were documenting and analyzing using quantitative indices. Data were compared to historical literature carried out in Algeria and the Mediterranean basin.

Materials and methods

Survey area

Naâma province is located in the southwest of Algeria (N 33°26′, W 0°54′) (Fig. 1). It is part of the Western Highlands, covers an area of 29.514 Km². It has an estimated population of 192.891 with an average density of about 6.5 Hab/Km2. The area is characterized by an ecological diversity represented by three principal regions: steppe, mountain, and pre-Saharan with 74 %, 12 %, and 14 % of the total area respectively. The climatic year is divided into two main seasons: cold and relatively rainy from November to April, hot and dry from May to October. The rainfall remains weak and irregular in comparison to the north bordering provinces; the temperature ranging from 8 °C in December/January to 31.5 °C in July/August (www.andi.dz/PDF/monographies/NAAMA.pdf).

Fig. 1.

Fig. 1

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Location map of study area

Data collection

This survey has been done between 2018 and 2020. A total of 84 people were face to face interviews, all people interviewed had been informed about the objective of this study. A semi-structured questionnaire interview was used to record socio-demographic data (gender, age, educational level) and the use of medicinal species (vernacular names, illnesses treated, part used, method of preparation). The plant name has been checked with the plant list database (http://www.theplantlist.org) and the African plant database (http://www.ville-ge.ch/musinfo/bd/cjb/africa/recherche.php). Voucher specimens were confirmed by experimenting botanists and stored in the herbarium of the laboratory of antifungal, antibiotic, Physico-chemical, synthesis, and biological activity, Abou Bekr Belkaid University, Tlemcen, Algeria.

Data analysis

Family use value (FUV)

The FUV was calculated using this formula: FUV = ΣUVs/ns; where ΣUVs is the sum of use value of the species within a family and ns is the total number of species within the same family. The FUV is calculated to identify the importance of plant families (Eddouks et al. 2017).

Use value (UV)

The particular use of UV is to determine the relative significance of the local species. It was used to define the most cited plant species to treat a disease category. UV was calculated using this formula: UV = ΣUi/N; where Ui: number of uses reports per species, and N: total number of informants (Trotter and Logan 1986).

Fidelity level (FL)

The FL value is calculated to estimate the importance of the species for a given purpose. A higher fidelity level (FL) can show that the utilization of plant for specific therapeutic purposes is preferred if respondents cited it frequently. FL was calculated using the following formula: FL= (Np/N)× 100; where Np: is the number of respondents that recommended the use of the plant for a specific disease, and N is the number of respondents that suggested the plant for various illnesses (Phillips 1996).

Results and discussion

Informants’ sociodemographic profile

In this study 84 people were questioned (Table 1), women are more interested in traditional medicine (57.14 %) compared with men. This predominance of women can be explained by their responsibility towards the family in caring for the health of family members, particularly children (Miara et al. 2018). The age range over 60 years is the most frequency range (25 %). Older people have more knowledge and experience than the younger due to the inherent belief that phytotherapy is effective and safe. The younger generation consuming wild species plants as remedies is on the way of extinction due to their interest in modern medicine.

Table 1.

Use of medicinal plants according to socio-demographic factors

Total Percentage
Gender
 Male 36 42.85
 Female 48 57.14
Marital status
 Single 11 13.1
 Married 73 86.9
Age groups
 < 20 5 6
 20–29 9 11
 30–39 14 17
 40–49 16 19
 50–59 19 23
 > 60 21 25
Educational level
 Illiterate 34 40.48
 Primary 17 20.24
 Lyceum 21 25
 University 12 14.29
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Part used

The aerial parts (73 %) were more used than the other parts, followed by roots (18 %), and leaves (9 %). Boudjelal et al. (2013) have also registered that the aerial parts are the most used in M’Sila, while other studies reported leaves as the predominant plant part used in surveyed regions of Algeria (Benarba et al. 2015; Bouasla and Bouasla 2017; Miara et al. 2018). It is well known that bioactive principles are contained in the plant’s organs with different concentrations. People in Naâma employ the aerial part based on their traditional heritage which can explain the most uses of this part by the local population.

Method of preparation

The local population uses different forms of preparation. The decoction (34 %) is the most common traditional method described to extract active compounds followed by infusion (31 %), powdering (20 %), maceration (12 %), and cataplasme (3 %). According to Meriem and Hayet (2019), decoction is the method of choice when working with tough and fibrous plants, barks, and roots and with plants that have water-soluble chemicals.

Frequency of families and their use value

Altogether, 27 plant species and 21 genera belonging to plant families Lamiaceae, Asteraceae, Cupressaceae, and Ephedraceae used against several diseases in the community are recorded (Table 2). The most represented families were Lamiaceae and Asteraceae (12 species for each of them), followed by Cupressaceae (2 species), and Ephedraceae (1 species). On the contrary, Ephedraceae (0.56)‏ had a high FUV, followed by Cupressaceae (0.45), Asteraceae (0.36), and Lamiaceae (0.35) (Table 2). Our result indicates that the families which have high FUVs are not necessarily represented by a large number of species in the study area. It confirmed that the use-value of families relies on the preference of the local population to use some plants’ families more than others..

Table 2.

List of wild medicinal plants and their traditional uses

References / Species (Voucher specimen no) Local name (Part used) Method of use Recommended uses (FL%) UV References representing similar uses
Asteraceae (0.36)
 Anvillea garcinii subsp. radiata (Coss. & Durieu) Anderb. (LABSAP-6) Nogd (Ap) Mac, Pdr Eye irritations, gastric pain, diabetes, allergy 0.29 (Hammiche and Maiza 2006; Kefifa et al. 2018; Hamza et al. 2019; Miara et al. 2019b)
 Artemisia arborescens (Vaill.) L. (LABSAP-7) Chehiba (Ap, R) Inf٫ Dec Toothache, gingivitis, depurative, gas 0.29 (Tuttolomondo et al. 2014)
 Artemisia campestris L. (LABSAP-8) Allel (Ap) Inf, Dec, Pdr Menstrual cycle problems, hypertension, brucellosis, diabetes 0.69 (Hammiche and Maiza 2006; Boudjelal et al. 2013)
 Artemisia herba-alba Asso. (LABSAP-9) Chih (Ap) Inf, Dec٫ Mac Gastric disorders, liver problems, wormer, muscle spasm, hypertension, COVID-19 0.76 (Eddouks et al. 2002; Boudjelal et al. 2013; Ouelbani et al. 2016; Kharchoufa et al. 2018)
Artemisia atlantica Coss. (LABSAP-10) Chouihiya (Ap, R) Inf Intestinal worms, diarrhea, diabetes, anorexia 0.15 (Fakchich and Elachouri 2021)
 Atractylis caespitosa Desf. (LABSAP-11) Kanouda (Ap,R) Inf, Dec٫ Mac Hepatitis, gas, constipation, obesity, rheumatism, tranquilizer 0.61 No data
 Brocchia cinerea (Delile) Vis. (LABSAP-70) Gartoufa (Ap) Dec, Mac, Pdr Asthma, allergy, inflammation, hypertension, eczema 0.73 (Abouri et al. 2012; Kefifa et al. 2018)
 Echinops bovei Boiss. (LABSAP-12) Tassekra (R) Inf, Dec Digestive disorders, incomplete abortion 0.13 (Hammiche and Maiza 2006; Miara et al. 2013)
 Otoglyphis pubescens (Desf.) Pomel. (LABSAP-13) Ouazouaza (Ap) Mac, Pdr Menstrual cycle problems, cough, otitis, tonsillitis 0.23 (Hammiche and Maiza 2006)
 Rhanterium adpressum Coss. & Durieu.(LABSAP-14) Arfej (L) Inf‏٫‏ Dec Antidiuretic, bladder disorders, cyst 0.14 No data
 Santolina rosmarinifolia L. (LABSAP-15) Jaàda (Ap) Mac, Pdr Gastric pain (56.25 %), ulcer, wound 0.25 (Boudjelal et al. 2013; Miara et al. 2019a)
 Warionia saharae Benth. & Coss. (LABSAP-16) Kebbar miise (L, R) Inf‏٫‏ Dec, Pdr Brucellosis, cardiac problems, rheumatism 0.15 (Abouri et al. 2012; Kharchoufa et al. 2018)
Cupressaceae (0.45)
 Juniperus oxycedrus L. subsp. oxycedrus.(LABSAP-34) Taga (Ap) Inf, Dec, Mac Ulcer, kidney problems, bladder disorders, respiratory complications, asthma 0.15 (Ouelbani et al. 2016; Miara et al. 2019a)
 Juniperus phoenicea L. subsp. phoenicea. (LABSAP-35) Araàr (L) Inf٫ Dec, Pdr Ulcer, diarrhea, gas, eczema, wound, burns, inflammation, food poisonings 0.75 (Boudjelal et al. 2013; Benarba 2016; Bouasla and Bouasla 2017; Miara et al. 2018, 2019a)
Ephedraceae (0.56)
 Ephedra alata subsp. alenda (Stapf) Trab.(LABSAP-37) Alenda (Ap) Dec Cancer (100 %), goiter 0.56 (Miara et al. 2019c)
Lamiaceae (0.35)
 Ajuga iva (L.) Schreb. (LABSAP-44) Chendgoura (Ap) Inf, Dec Hypertension, diabetes, goiter, intestinal worms 0.33 (Boudjelal et al. 2013; Miara et al. 2013, 2019a; Benarba et al. 2015; Benarba 2016)
 Ballota hirsuta Benth. (LABSAP-45) Meroukt (Ap) Cat Migraine (57.14 %), headache, rheumatism 0.13 No data
 Maropsis deserti (de Noé) Pomel. (LABSAP-46) Garne el kabche (Ap) Inf, Dec, Pdr kidney problems, bladder disorders, diuretic, snakebite and scorpion stings, menstrual cycle problems 0.15 (Ould el-Hadj et al. 2003; Abouri et al. 2012)
 Marrubium vulgare L. (LABSAP-47) Merioua (Ap, R) Inf, Dec, Cat Rheumatism (53.33 %), low back pain, infertility, menstrual cycle problems, cough, toothache 0.33 (Miara et al. 2013; Benarba 2016; Ouelbani et al. 2016; Hamza et al. 2019)
 Mentha suaveolens Ehrh. (LABSAP-48) Timersît (Ap) Inf, Dec, Pdr Gas, diarrhea, allergy, bronchitis, fever 0.17 (Lahsissene and Kahouadji 2010; Jamila and Mostafa 2014)
 Mentha pulegium L. (LABSAP-49) Flîyo (Ap) Inf, Dec Gastric pain, diabetes, cough, hypertension 0.15 (Bouasla and Bouasla 2017; Eddouks et al. 2017; Kharchoufa et al. 2018)
 Nepeta nepetella subsp. amethystina (Poir.) Briq. (LABSAP-50) Napta (Ap) Inf٫ Dec Gas (52.94 %), digestive disorders, diuretic, diaphoretic, muscle spasm 0.33 No data
 Rosmarinus officinalis L. (LABSAP-51) Azir eljabel (Ap) Inf, Dec, Pdr Cough, influenza, cold, rheumatism, muscle spasm, cholelithiasis, cholagogue, fever 0.80 (Benarba 2016; Bouasla and Bouasla 2017; Eddouks et al. 2017; Kharchoufa et al. 2018)
 Saccocalyx satureioides Coss. & Durieu. (LABSAP-52) Azir ermal (Ap) Inf٫ Dec٫ Pdr Hypertension, cardiac problems, diabetes, gastritis, hyperglycemia 0.57 (Benarba et al. 2015; Hamza et al. 2019)
 Teucrium polium L. (LABSAP-53) Jaàda (Ap) Dec, Mac, Pdr Digestive disorders (60 %), hypertension, diabetes 0.17 (Benarba 2016; Bouasla and Bouasla 2017; Kharchoufa et al. 2018; Miara et al. 2019a)
 Thymus algeriensis Boiss. & Reut. (LABSAP-54) Zaàtar (Ap) Inf, Dec, Pdr Cold, hypercholesterolemia, inflammation, menstrual cycle problems, COVID-19 0.68 No data
 Thymus munbyanus subsp. ciliatus (Desf.) Greuter & Burdet. (LABSAP-55) Djertil (Ap, R) Inf, Dec Cough, cold, influenza, inflammation, diabetes 0.46 (Boudjelal et al. 2013; Miara et al. 2013, 2018)
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Inf infusion, Dec decoction, cat   cataplasm, Mac  maceration, Pwd powder, Ap aerial part, L leaves, R root

Medicinal plants used

Species with high used values (UV) were Rosmarinus officinalis L. (0.80), Artemisia herba-alba Asso (0.76), Juniperus phoenicea L. subsp. phoenicea (0.75). This means that these species are the most important medicinal plants used in folk medicine by the population of Naâma to treat ailments, which might be due to their vast distribution in the area study.

In our research area, the use of R. officinalis L. was recorded especially to treat respiratory system problems such as cough, influenza, cold; it is also used for rheumatism, muscle spasm, cholelithiasis, cholagogue, and fever. In the traditional pharmacopeia of Algeria, the same species was recorded as an anti-diabetic, antitumoral, antihypertension, and for treating hepatic diseases (Boudjelal et al. 2013). The most effective bio-active secondary metabolites of R. officinalis L. were phenolic acids, diterpenes, and triterpenes phenolic. Among the isolated phenolic compounds, carnosic acid, carnosol acid, ursolic acid, and rosmarinic acid have been recorded to have major pharmacological effects (Tomi et al. 2016). These compounds except rosmarinic acid increased hPXR (human Pregnane X receptor) target gene expression, transactivated the ligand-binding domain of hPXR and recruited steroid receptor coactivator (SRC)-1, SRC-2, and SRC-3 to the ligand-binding domain of hPXR. The hPXR plays important role in the control of many gene expression linked to inflammatory processes (Seow and Lau 2017).

The most important therapeutic uses of Artemisia herba-alba Asso were those of gastric disorders, liver problems, wormer, muscle spasm, cardiac problems, and hypertension. In Algeria, it is reported to treat digestive system problems (Boudjelal et al. 2013; Miara et al. 2018, 2019a), diabetes (Bouasla and Bouasla 2017), cancer, and respiratory system diseases (Ouelbani et al. 2016). The properties of this plant may be due to its chemical compounds as monoterpenoids, sesquiterpenoids (largely in essential oils), flavonoids, and phenolic compounds (Khlifi et al. 2013; Mohamed et al. 2019) Several studies studied the antispasmodic activity of the essential oil extracted from the plant’s aerial parts. It was found that the administration of this oil relaxed the spontaneous tonus of the rabbit jejunum and reversed the tonic contraction of rat jejunum induced by carbachol (Aziz et al. 2012). Another published study has found that the aqueous extract of this plant has increased the time of gastrointestinal transit in alloxan-treated rabbits and mice (Marrif et al. 1995), and improves insulin sensitivity and hepatic steatosis in rodents-induced metabolic syndrome (Réggami et al. 2019). The same extract at a dose of 150 mg/kg for 20 days significantly reduced the systolic blood pressure in spontaneously hypertensive rats (Zeggwagh et al. 2008).

Recently, the use of Artemisia herba-alba Asso extract to treat the symptom of COVID-19 is under-discussed. Our informants found the effective use of the plant combined with Thymus algeriensis Boiss.& Reut against COVID-19 in the early stage. It is necessary to emphasize that no published data based on clinical experience are supporting the use of these plants, and their effectiveness against coronavirus is unknown. the beneficial effects of Artemisia herba-alba Asso are probably due to its flavonoids as Artemisinin and others. The safe toxicity profile of artemisinin and its immunomodulatory properties on inflammatory diseases and viral infection encourage trying it against COVID-19. Artemisinin, an effective anti-malarial drug, reduces tumor necrosis factor (TNF)-α and interleukin (IL)-6 which are key mediators of acute respiratory distress syndrome (Cheong et al. 2020). In vitro, artemisinin-based combination therapy exerted antiviral activity against clinically isolated SARS-CoV-2 strain (IHUMI-3) in Vero E6 cells; among these, Mefloquine-artesunate showed the best inhibition with 72.1 ± 18.3 % (Gendrot et al. 2020). A clinical study in China showed that a Hemi-synthetic derivative of artemisinin (artesunate) was accompanied by a shorter duration of COVID-19 symptoms than a standard of care (Cheong et al. 2020; Li et al. 2021) found that the treatment with artemisinin-piperaquine could significantly shorten the time to reach undetectable SARS-CoV-2..

Our survey indicated that Juniperus phoenicea L. subsp.phoenicea is used especially to treat ulcer, diarrhea, gas, eczema, wound, burns, inflammation, and food poisonings. Previous surveys in Algeria have shown that this plant is widely used to treat ulcers, intoxication, inflammation, and digestive disorders (Boudjelal et al. 2013; Bouasla and Bouasla 2017; Miara et al. 2018). Various studies have shown that Amentoflavone isolated from Juniperus phoenicea L exhibit a wide range of pharmacological functions (Yu et al. 2017). Administration of amentoflavone in Wistar rats induced ulcerative colitis reduces the extent of the inflammatory colonic injury by decreased mucosal injury score, vascular permeability, and diminished myeloperoxidase and lactate dehydrogenase activity. Furthermore, amentoflavone inhibits colitis by increased superoxide dismutase, glutathione, and decreased lipid peroxidation and nitric oxide. The treatment with this biflavonoid compound reduces the colonic TNF-α, IL-1β, and IL-6 levels as well as the expression of inducible nitric oxide synthase and cyclooxygenase-2. Also, this compound inhibits the activation and translocation of nuclear factor (NF)-κB subunits (p65/p50) (Sakthivel and Guruvayoorappan 2013; Yu et al. 2017).

Our respondents have reported that Brocchia cinerea (Delile) Vis could be utilized in the treatment of asthma, allergy, inflammation, hypertension, and eczema. However, the same species was used by the local population and healers in Algeria to treat pharyngitis, cold, stomach ache, kidney diseases, systemic healing, and migraine (Benarba et al. 2015; Benarba 2016). Recent studies revealed that this plant exhibits various biological activities such as analgesic, cytotoxic, and effect on diabetes. These are related to the presence of chemical substances such as flavonoids, terpenes, and essential oils which are predominated by thujone, eucalyptol, and santolinatriene (Amssayef and Eddouks 2020; Guaouguaou et al. 2020). It have been reported that a single and repeated oral administration of Brocchia cinerea (Delile) Vis aqueous extract at the dose of 20 mg/kg for 15 days, reduced significantly blood glucose and plasma triglycerides levels in both normal and diabetic rats (Amssayef and Eddouks 2020). Other ethnopharmacological uses of the most cited plants by the local population are represented in Table 2.

Fidelity level (FL)

FL of species was determined and we considered those plants whose FL were superior to 50 as important and significant. The plants with less than 5 use reports were excluded. Ephedra alata subsp. alenda (Stapf) Trab having the highest FL (100 %) was used for treating cancer. The same result was found in the study of Illizi in Algerian Sahara (Miara et al. 2019c). Calculation of FL indicated that Teucrium polium L. is the wide species used for treating digestive disorders with an FL of 60 %. Ballota hirsuta Benth has been reported to be used in the treatment of migraine with an FL of (57.14.5 %). Santolina rosmarinifolia L was used for gastric pain having an FL of 56.25 % (Table 2).

Comparison with national and regional ethnobotanical surveys:

Comparative analysis results from 21 previous ethnobotanical surveys are shown in Table 2; in which they reported at minimum one similar therapeutic use from the inventoried plants. Among the 21 works of literature; 13 can give full data of national surveys or herbal practices in Algeria, the other literature can give the most cited data of ethnobotanical studies or herbal practices in surrounding areas such as Morocco and Italy. The number of medicinal plants listed in different provinces of Algeria ranged from 37 to 141 species. 141 species were recorded in Mascara province (Benarba et al.2015), 118 medicinal herbs were recorded in the Tuareg community in the region of Illizi (Miara et al. 2019c), and 102 medicinal plants were recorded in the two provinces of Constantine and Mila (Ouelbani et al. 2016). While the 37 medicinal plants were recorded in Ouargla province (Ould el-Hadj et al. 2003). Our results inventoried 27 medicinal plants belonged to the four botanical families in Naâma. Two species were newly cited as medicinal plants in our study, and their therapeutic use is not cited in the 21 literature above. The plants were Atractylis caespitosa Desf ‏and‏ ‏Nepeta nepetella subsp.amethystina (Poir.) Briq. In Algeria, only one ‏study has investigated the antimicrobial activity and chemical composition of essential oil ‏and hydrosol extract of ‏Nepeta nepetella subsp. amethystina (Poir.) Briq (Bellahsene et al. 2015). These results can contribute to new research for further biological and pharmacological studies.‏‏.

Some new therapeutic uses that did not mention to those in the previous studies are recorded in our study. Species used to treat brucellosis such as ‏Artemisia campestris L.; species used as anti-inflammatories like Brocchia cinerea (Delile) Vis, Thymus algeriensis Boiss. & Reut, and Thymus munbyanus subsp. ciliatus (Desf.) Greuter & Burdet; and species ‏used to manage hypercholesterolemia included ‏Thymus algeriensis Boiss. & Reut. Other new practices were described for Maropsis deserti (de Noé) Pomel as a diuretic while Rhanterium adpressum Coss. & Durieu as antidiuretic; Otoglyphis pubescens (Desf.) Pomel to treat otitis and tonsillitis; Saccocalyx satureioides Coss. & Durieu as antihypertensive; Ballota hirsuta Benth to heal rheumatism. For skin diseases; the new uses referred to Brocchia cinerea (Delile) Vis to treat eczema. The same plant with Anvillea garcinii subsp. radiata (Coss. & Durieu) Anderb acts as an anti-allergic plant; ‏Ephedra alata subsp. alenda (Stapf) Trab using as an anti-goiter; ‏ Juniperus oxycedrus L. subsp.oxycedrus and Santolina rosmarinifolia L. as anti-ulcer agents. Also, the new traditional therapeutics that did not cite any in the previous literature included Artemisia herba-alba Asso, and Thymus algeriensis Boiss. & Reut to manage COVID-19 symptoms. These botanical species should be evaluated phytochemically and pharmaceutically.

Conclusions

The current study is the first survey that records the indigenous knowledge of the use of medicinal plants in the province of Naâma. The results obtained indicate the richness and diversity of the area with medicinal plants. Moreover, local people possess precious quantities of knowledge confirmed by the large number of species cited with their mode of preparation and different part used for manifold therapeutic uses. Some of this heritage was being lost. That is why; this study supports the importance of the preservation of local knowledge and indigenous practices of transferring it to other communities and scientists. It became necessary that the pharmaceutical industry must collaborate with the indigenous traditional people’s possessed collective knowledge of alternative medicine as a source of new drugs.

Acknowledgements

The authors are grateful to the peoples of Naâma for accepting to share their knowledge and practices. Without their contribution, this study would have been impossible.

Code availability

Not applicable.

Declarations

Conflict of interest

The authors declare no conflict of interest.

Footnotes

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Contributor Information

Miloud Bouafia, Email: miloudbio@gmail.com.

Fouzia Amamou, Email: amamoufouzia@gmail.com.

Mohamed Gherib, Email: gmnaama64@gmail.com.

Mohammed Benaissa, Email: ben_forets@yahoo.fr.

Rachid Azzi, Email: rachidbio@yahoo.fr.

Saïd Nemmiche, Email: snemiche@hotmail.com.

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