Table 1.
Thallus structures and size of algae recovered from the atmosphere of Varanasi City, India
| Organisms | Thallus organization | Body/cell size; in μ |
|---|---|---|
| Blue–green algae | ||
| Chroococcus sp. | Unicellular/colonial | 4–11 broad |
| Aphanocapsa spp. | Unicellular/colonial | 4–6 diameter |
| Gloeocapsa spp. | Unicellular/colonial | 5–8 diameter |
| Gloeothece sp. | Colonial | 25–41 diameter |
| Synechocystis spp. | Unicellular | 5–6 diameter |
| Synechococcus spp. | Unicellular | >5 broad |
| Microcystis sp. | Colonial | 3–7 diameter |
| Merismopedia sp. | Tubular colony | 3.5–10 broad |
| Spirulina sp. | Trichomes spirally coiled | 2–22 broad |
| Oscillatoria sp. | Trichome | 2–29 broad |
| Phormidium spp. | Trichome | 1–12 broad |
| Lyngbya spp. | Filamentous | 1–24 broad |
| Microcoleus sp. | Trichomes in bundle | 2–10 broad |
| Cylindrospermum spp. | Trichome | 4–5 broad |
| Nostoc spp. | Trichome | 2.2–5 broad |
| Anabaena spp. | Trichome | 2.5–12 broad |
| Plectonema spp. | Filamentous | 2–10 broad |
| Scytonema spp. | Filamentous | 3–36 broad |
| Tolypothrix spp. | Filamentous | 4.2–35.7 broad |
| Microchaete spp. | Filamentous | 4.5–20 broad |
| Calothrix spp. | Filamentous | 4–12.5 broad |
| Haplosiphon spp. | Filamentous | 3–24 broad |
| Green algae | ||
| Chlorococcum sp. | Unicellular | 2–20 diameter |
| Chlorella sp. | Unicellular | 5–10 diameter |
| Closterium sp. | Unicellular | 6–32 broad |
| Selenastrum sp. | Unicells/colonial | 2–15 broad |
| Stichococcus spp. | Colonial; cells in chain | 3–4 diameter |
| Scenedesmus sp. | Colonial | 3.5–7 broad |
| Hormidium sp. | Filamentous | 5–15 broad |
| Oedogonium sp. | Filamentous | 8–45 broad |
| Diatoms | ||
| Navicula sp. | Unicellular | 25–40 broad |
| Nitzschia sp. | Unicellular | 20–30 broad |
| Pinnularia sp. | Unicellular | 15–30 broad |