Table 1.

GC-MS analysis of C. subulatus leaf oils in the four seasons.

No.	Compound name	Retention time	Molecular formula	RI exp	RI lit	Relative abundance (%)
						Spring	Summer	Autumn	Winter
1.	α-Thujene	7.155	C10H16	908	906	0.64	–	0.25	0.98
2.	α-Pinene	7.365	C10H16	917	917	31.41	26.34	24.68	28.69
3.	β-Pinene	8.576	C10H16	962	963	0.72	0.25	0.52	0.97
4.	β-Myrcene	9.057	C10H16	978	978	–	–	–	0.45
5.	α-Phellandrene	9.460	C10H16	993	994	1.03	0.32	0.64	9.51
6.	2-Carene	9.635	C10H16	999	1000	0.10	–	–	–
7.	3-Carene	9.755	C10H16	1003	1004	0.17	–	–	0.38
8.	Limonene	10.115	C10H16	1016	1018	5.06	2.45	5.41	3.61
9.	Eucalyptol	10.335	C10H18O	1022	1022	44.63	66.87	58.33	46.74
10.	γ-Terpinene	11.165	C10H16	1049	1049	0.76	–	–	0.58
11.	α-Terpinolene	12.067	C10H16	1090	1085	0.74	–	–	0.34
12.	Linalool	12.678	C10H18O	1113	1113	–	–	0.14	–
13.	Pinocarveol	13.633	C10H16O	1138	1138	–	0.23	0.45	0.42
14.	Borneol	14.297	C10H18O	1166	1166	–	–	0.16	–
15.	Terpinen-4-ol	14.860	C10H18O	1168	1168	1.27	0.43	0.89	0.60
16.	α-Terpineol	15.285	C10H18O	1181	1181	3.62	2.67	5.97	4.05
17.	β-Citral	16.795	C10H16O	1232	1232	0.63	–	–	–
18.	α-Citral	17.680	C10H16O	1263	1267	1.27	–	–	–
19.	Eugenol	20.097	C10H12O2	1366	1366	–	–	0.20	–
20.	Geranyl acetate	20.410	C12H20O2	1372	1377	–	–	0.15	–
21.	Caryophyllene	21.797	C15H24	1409	1409	0.27	–	0.18	0.26
22.	Ledene	23.652	C15H24	1500	1495	–	–	0.12	0.26
23.	δ-Cadinene	24.455	C15H24	1512	1515	0.56	0.22	0.34	1.20
24.	flavesone	24.810	C14H20O4	1547	1546	–	–	0.17	–
25.	Spathulenol	26.066	C15H24O	1577	1577	1.39	–	0.14	0.50
26.	Viridiflorol	26.121	C15H26O	1586	1590	0.61	0.21	0.57	–
27.	Guaiol	26.610	C15H26O	1596	1600	0.44	–	0.18	–
28.	Caryophyllene oxide	27.010	C15H24O	1613	1615	2.34	–	0.20	0.39
29.	Guaia-3,9-diene-11-ol	27.790	C15H24O	1647	1649	0.57	–	–	–
30.	Neointermedeol	27.935	C15H26O	1653	1656	0.39	–	–	–
31.	Germacrone	28.850	C15H22O	1693	1696	1.40	–	0.32	–
	Monoterpene hydrocarbons					40.66	29.36	31.5	45.51
	Oxygenated monoterpenes					51.72	70.2	66.29	51.81
	Sesquiterpene hydrocarbons					0.83	0.22	0.64	1.72
	Oxygenated Sesquiterpene					7.14	0.21	1.58	0.89
	Total identified (%)					98.96	99.99	100	99.93
	Yield (mL/100 gm)					0.17	0.26	0.34	0.53

The major oil components are written in bold.