Selaginella repanda (Desv. ex Poir.) Spring

Shalimov, Aleksandr Petrovich, Wu, Yu-Dong & Zhang, Xian-Chun, 2019, A taxonomic revision of the genus Selaginella (Selaginellaceae) from Nepal, PhytoKeys 133, pp. 1-76 : 1

Selaginella repanda (Desv. ex Poir.) Spring Figs 7 (1 A–C), 10H , 30

Selaginella repanda (Desv. ex Poir.) Spring, in Gaudich., Voy. Bonité, Bot. 3: 329. 1846; Iwatsuki 1975; Iwatsuki 1988; Dixit 1992; Thapa 2002; Zhang 2004; Zhang et al. 2013; Fraser-Jenkins et al. 2015; Fraser-Jenkins et al. 2017.

≡ Lycopodium repandum Desv. ex Poir., Encycl., Suppl. 3(2): 558. 1814. Type. PHILIPPINE. In insulis Philippinis. Desvaux s.n. (holotype: P).

= Lycopodium barbatum Kaulf., Enum. Filic.: 18. 1824.

≡ Selaginella barbata (Kaulf.) Spring, Bull. Acad. Roy. Sci. Bruxelles 10(1): 226. 1843. Type. PHILIPPINE. Isl. Manila. Chamisso s.n. (?).

= Lycopodium tetragonostachyum Wall. ex Hook. & Grev., Bot. Misc. 2: 389. no. 129. 1831.

≡ Selaginella tetragonostachya (Wall. ex Hook. & Grev.) Spring, Bull. Acad. Brux. 10: 234, no. 163. 1832. Type. BURMA. Mts. of Ava, Wallich p. p. (?).

= Lycopodium tetragonostachyum var. major Grev. & Hook., Bot. Misc. 2: 389. 1832. Type. INDIA. Rajemah Mts, of Hindustan. Dr. Wallich; Mongher, Dr. Hamilton; Hilly country of Madras. Dr. Wight = S. radicata (syntypes: E).

= Selaginella implexa J. Scott, J. Agri-Hort. Soc. Ind., N. S., 1(2): 262. 1868. Type. INDIA. Parasnath, 2000 ft., Bheerboom and Hills near Balasore (holotype C).

= Selaginella suberecta Baker, J. Bot. 22: 245, no. 146. 1884. Type. MALAYSIA. Malacca, Griffith s.n. (?).

Description.

Stems 5-30 cm, suberect to erect. Rhizophores borne from base to upper part of main stem or restricted to creeping rhizomes and stolons, on ventral side in axils of branches. Main stem branches above base, without branching part up to 15 cm, stems oval or terete. Axillary leaves more or less similar to lateral leaves, ovate or ovate-lanceolate, 2-3 × 1-1.4 mm, base exauriculate, margin ciliolate, in upper part subdentate, apex obtuse. Ventral leaves spreading, ovate, 2.2-3 × 1-1.5 mm, sub-falcate, rounded at base, basiscopic base with few cilia, acroscopic base rounded, not overlapping stem and branches, margin ciliolate in basal half, in middle and upper part dentate to denticulate, apex acute. Dorsal leaves ovate, imbricate, base cordate, in base margin ciliolate, margin in middle and upper part denticulate, apex acute to acuminate. Strobili tetragonous, submonomorphic, 3-8 × 1.5-3 mm. Sporophylls uniform, submonomorphic or sometimes dorsal sporophylls longer, ovate, margin ciliolate, apex acuminate. Megaspores yellowish orange, baculate, surface regulate or reticulate; microspores orange, surface irregular elevations.

Ecology.

In the open or semi-shaded places on rocks or under shrubs on soil banks. Alt. 200-400 m.

Distribution in Nepal.

C, E.

Nepalese threatened status: VU ( Fraser-Jenkins et al. 2015).

General distribution.

CAMBODIA, CHINA (Guangxi, Guizhou, Hainan, Taiwan, Yunnan), INDIA (Andhra Pradesh, Assam State, Bihar, Chhattisgarh, Jharkhand, Karnataka, Madhya Pradesh, Meghalaya, Maharashtra, Mizoram, Nagaland, Odisha, Rajasthan, Sikkim, Tamil Nadu, Uttarakhand, Uttar Pradesh, West Bengal), INDONESIA, LAOS, MALAYSIA, MYANMAR, PHILLIPINES, THAILAND, VIETNAM.

Chromosome number.

Not available data.

Selected specimens examined:

C Nepal: MAKAWANPUR: "Suntari, W. of Hetauda, Makawanpur, alt. c. 200 m, 8 Nov 1988, T. Nakaike 3719 " (PE); "l.c. T. Nakaike 3708 " (PE); "l.c. T. Nakaike 3703 " (PE); "l.c. T. Nakaike 3715 " (PE).

Figures

Figure 7. Morphological diversity of the leaves of Nepalese Sealginella species 1 A-C S. repanda (Nakaike 3708, PE) 2 A-C S. vaginata (Nakaike 1102, PE) 3 A-C S. chrysorrhizos (Nakaike 3708, PE). A - Axillary leaves, B - Dorsal leaves, C - Ventral leaves. Scale bars: 0.2 mm.

Figure 10. Diversity strobili of Nepalese Selaginella species A S. laxistrobila (Nakaike 1319, PE) B S. bisulcata (Nakaike 3786, PE) C S. pennata (Nakaike 3507, PE) D S. chrysocaulos (Nakaike 1058, PE) E S. ciliaris (s. n. 1225, PE) F S. monospora (Tabata et al. 11051, PE) G S. trichophylla (Lu & Zhang 27625 - B, PE) H S. repanda (Nakaike 3708, PE) I S. vaginata (Nakaike 1102, PE). Scale bars: 2 mm (A, B), 2 mm (C, D, G, H), 1 mm (E, F, I).

Figure 30. Selaginella repanda (Desv. ex Poir.) Spring A Habit, lower surface B strobilus, lower surface C fragment of the upper surface of the lateral branches D fragment of the lower surface of the lateral branches (T. Nakaike 3715, PE).