Selaginella pulvinata (Hook. & Grev.) Maxim.

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 pulvinata (Hook. & Grev.) Maxim. Figs 1 (2 A–C), 13

Selaginella pulvinata (Hook. & Grev.)Maxim., Mém. Acad. Imp. Sci. Saint Pétersb. ( Sér. 7) 9: 335. 1859; Dixit 1992; Thapa 2002; Zhang 2004; Zhang et al. 2013; Fraser-Jenkins et al. 2015; Fraser-Jenkins et al. 2017.

≡ Lycopodium pulvinatum Hook. & Grev., Hooker’s J. Bot. Kew Gard. Misc. 2: 381. 1831.

≡ Selaginella tamariscina var. pulvinata (Hook. & Grev.) Alston, Bull. Fan Mem. Inst. Biol., Bot. 5(6): 271. 1934.

( Selaginella pulvinata (Hook. & Grev.) Hand.-Mazz., Symb. Sin. 6: 5. 1929, later isonym).

≡ Lycopodioides pulvinata (Hook. & Grev.) H.S. Kung, Fl. Sichuanica 6: 64, t. 18, f. 1-3. 1988. Type. INDIA. E. India, Kamoon. Dr. Wallich s.n. (holotype: K).

Description.

Stems 2 –15(– 20) cm, many forming rosette at top of thick rootstock, branched from base. Main stems branched near and above base, primary branches pinnately branched, second branches 2-3 forked, stramineous or brown, main stem c. 1 mm in diam. at lower part. Axillary leaves ovate to triangular, c. 2.5 × 1 mm, base exauriculate, margin lacerate-ciliolate, apex acute. Ventral leaves ovate, 2.9-3.2 × 1.4-1.5 mm, rotundate-cordate at base, margin lacerate, apex acuminate. Dorsal leaves ovate, 2.8-3.1 × 0.9-1.2 mm, base truncate, entire to obscurely denticulate, posterior side thickened, apex aristate. Strobili solitary, terminal, compact, tetragonal, 7 –15(– 20) × 1.5-2 mm. Sporophylls monomorphic, ovate, at base cordate, margin slight denticulate, apex acuminate. Megaspores white-yellow, surface verrucate; microspores yellow, surface irregularly papillate.

Ecology.

Terrestrial or epilithic, xerophytic. Alt. 1800-4400 m.

Distribution in Nepal.

W.

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

General distribution.

CHINA (Chongqing, S Gansu, Guangxi, Guizhou, Hebei, Henan, Liaoning, Shaanxi, Shanxi, Sichuan, Xizang), INDIA (Uttarakhand), KOREA, MONGOLIA, RUSSIA (Siberia), THAILAND, VIETNAM.

Chromosome number.

not available data.

Selected specimens examined:

W Nepal: BAJHANG: "Bauligad, on open rock, rooting on crevices, alt. 1830 m, 6 Jul 1980, P.R. Shakya, L.R. Sharma, K.R. Amatya 6328 " (KATH).

DOLPA: "between Besagad and Shahartara, 14 Sep 1976, H. Tabata, K.R. Rajbhandari, Y. Shimizu 3520 " (PE).

Figures

Figure 1. Morphological diversity of the leaves of Nepalese Sealginella species: 1 A-C S. indica (Nakaike 1325, PE) 2 A-C S. pulvinata (Tabata et al. 3520, PE) 3 A-C S. bryopteris (Tabata et al. 11989, PE). A - Axillary leaves, B - Dorsal leaves, C - Ventral leaves. Scale bars: 0.2 mm.

Figure 13. Selaginella pulvinata (Hook. & Grev.) Maxim. A Habit B fragment of the upper surface of the lateral branch showing dorsal leaves imbricate at branch (A Maire AMA 894, E; B Tabata et al. 3520, PE). Link: (http: // data. rbge. org. uk / herb / E 00670565).