Selaginella monospora 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 monospora Spring Figs 6 (2 A–C), 10F , 28

Selaginella monospora Spring, Mém. Acad. Roy. Sci. Belgique. 24: 135. 1850; Alston 1945; Panigrahi and Dixit 1968; Iwatsuki 1975; Iwatsuki 1988; Dixit 1992; Thapa 2002; Zhang 2004; Singh and Panigrahi 2005; Zhang et al. 2013; Fraser-Jenkins et al. 2015; Fraser-Jenkins et al.2017.

≡ Lycopodium monosporum (Spring) Hook., Bot. Misc. 9: 362. 1857.

≡ Selaginella plumosa var. monospora (Spring) Baker, J. Bot. 21: 145. 1883. Type. (lectotype, designated by Fraser-Jenkins et al. 2017) BHUTAN. Bootan [Khegumpa, N. of Dewangiri (Deotang)], W. Griffith 391 Journal" [24.1.1838], Herbarium Hookerianum (K).

= Selaginella gorvalensis Spring, Mém. Acad. Roy. Sci. Belgique. 24: 256. 1850.

≡ Lycopodioides gorvalensis (Spring) Kuntze, Revis. Gen. Pl. 2: 826. 1891. Type. INDIA. Gorval: Griffith s.n., in error for Khasia (holotype: K).

= Selaginella microclada Baker, J. Bot. 22: 246. 1884. Type. INDIA. Sikkim, Chong-tong, alt. 4000 ft. 22 Jul 1862. Dr. Anderson 1404 (holotype: K [001067485]).

Description.

Stems 35-85 cm, creeping. Rhizophores at intervals throughout length of main stem, borne on ventral side in axils of branches. Main stems branched throughout, pinnately branched. 1.5-2 mm in diam. in lower part. Axillary leaves ovate, narrowly ovate, or narrowly elliptic, 2-3 × 0.8-1.6 mm, base exauriculate, margin denticulate, apex acute. Ventral leaves ovate-triangular or oblong-falcate, 2.6-4.3 × 0.9-1.4 mm, basiscopic base decurrent, margin subentire or entire; acroscopic base enlarged, broader, overlapping stem and branches, margin denticulate, apex subacute. Dorsal leaves ovate-lanceolate or elliptic, 1-1.6 × 0.3- 0.7 mm, carinate or strongly carinate, base obtuse, not peltate, margin denticulate, apex acuminate or shortly aristate. Strobili solitary, terminal, compact, 3-15 × 1.9-5 mm, sporophylls isomorphic, slightly dimorphic to strongly dimorphic. Sporophylls dimorphic, ventral sporophylls ovate-lanceolate, carinate, base dilated, margin denticulate; dorsal sporophylls lanceolate, sharply carinate, margin minutely denticulate, apex acuminate. Megaspores brown, surface verrucate; microspores orange, surface verrucate.

Ecology.

On moss covered rocks or on damp slopes in forests, sparse in open slopes on edge of forest. Alt. 1650-3000 m.

Distribution in Nepal.

C, E.

Nepalese threatened status: not available data.

General distribution.

BHUTAN, CHINA (Guangdong, Guangxi, Guizhou, Hainan, Xizang, Yunnan), INDIA (Assam, Kerala, Manipur, Meghalaya, Tamil Nadu, Sikkim, West Bengal), MYANMAR, THAILAND, VIETNAM.

Chromosome number.

Not available data.

Selected specimens examined:

E Nepal: SANKHUWASABHA: "en route from Harelo to Chichila, Castanopsis hystrix forest, on the moist rock. alt. 1935 m, 2 Jun 1978, H. Tabata et al. 11051 " (PE); "Above Shinbun-Hatia Gola, alt. 1600-2100 m, 3 Aug 1977, H. Ohashi et al. 771954 " (TI, photo); "Seduwa, in shade under rocks, 7 VI 1965. Banerjee, Upadhyay, Baskola 3322" (US, photo); "Seduwa (Kasuwa Khola) prostrate, alt. 3000 ft, 6 May 1965, Banerjee, Upadhyay, Baskola 3374 " (US, photo).

SOLUKHUMBHU: "Near Namche, alt. 8000 ft, 9 May 1965, Banerjee et al. 3418 " (US, photo); "Near Namche, alt. 8000 ft, 9 May 1965, Banerjee et al. 3420 " (US, photo).

TAPLEJUNG: "Khebang below Siling Tzokupa, 20 Nov 1963, H. Hara et al." (TI, photo).

ILAM: "Densely forested, rocky stream-gully of Sudhung Khola, shortly below Sudhung khola, shortly below Sudhung, leading south below road, below Sundergaon, W. of Pashupatinagar on Ilam road, 9 Oct 2001, C.R. Fraser-Jenkins 29549 (FN 5494)" (US, photo); "in Oak-forest on slopes above streams, between Chitregaon and Manebhanjyang, c. 4-5 km N.E of Pashupatinagar, on footpath to Manebhanjyang near indian border, N. E. of Ilam, 23 Oct 2001, C.R. Fraser-Jenkins 29069 (FN 5584)" (US, photo).

JHAPA: "c. ½ km below and S. of Kuttedara on road to Bhudabare, N. of Charali on road to Phikal and Ilam, NE of Birtamod and NW of Kakkarbhitta, forested Khola (stream-gully), 16 Aug 1998. C.R. Fraser-Jenkins 26586 (FN 2564)" (US, photo).

Figures

Figure 6. Morphological diversity of the leaves of Nepalese Sealginella species 1 A-C S. ciliaris (s. n. 1225, PE) 2 A-C S. monospora (Tabata et al. 11051, PE) 3 A-C S. trichophylla (Lu & Zhang 27625 - B, 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 28. Selaginella monospora Spring A Habit, upper surface B (B 1) habit, lower surface C strobilus, upper surface D fragment of the upper surface of the lateral branches E fragment of the lower surface of the lateral branches (F. Henderson 13644, E). Link: (http: // data. rbge. org. uk / herb / E 00754773).