Selaginella reticulata (Hook. & Grev.) Spring, 1843

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 reticulata (Hook. & Grev.) Spring Figs 8 (1 A–C), 11B , 33

Selaginella reticulata (Hook. & Grev.) Spring, Bull. Acad. Roy. Sci. Bruxelles 10(1): 233. 1843; Alston 1945; Dixit 1992; Fraser-Jenkins et al. 2015; Fraser-Jenkins et al. 2017.

≡ Lycopodium reticulatum Hook. & Grev., Bot. Misc. 2: 402. 1831. Type. MYANMAR. Mt. Ava. Dr. Wallich s.n. (holotype: K [001067446]).

= S. nudicaulis Spring, Monogr. Lyc. II: 235. 1850.

= S. rajasthanensis Gena, Bhardwaja & A.K. Yadav, Amer. Fern J. 69(4): 119. 1979. Type. INDIA. Kundakhon, Shahabad, Kota, Rajasthan, growing on an isolated moist rock, Sep 1977, C.B. Gena, A.K. Yadav (holotype: PUN (PYN 2610); isotypes: Pteridophyte Biology Lab. Govt. College, Ajmer, India (N° PBL/77/S1-6/28/671); B; BM [001038102]; CAL; K [001067491]; LWF; NY; US [00134391]).

= Selaginella jainii R.D. Dixit, Bull. Bot. Surv. India 25(4-Jan): 225, f. 2 A–H. 1985. Type. INDIA. Madhya Pradesh, Bilaspur: Siang, 22 Feb 1972, Panigrahi 16838 A, Plant number-2 (holotype: CAL); Madhya Pradesh, Bilaspur: Siang, 22 Feb 1972, Panigrahi 16838 B (isotype: BSA).

= Selaginella panigrahii R.D. Dixit, Bull. Bot. Surv. India 25(4-Jan): 226, f. 4. A–H. 1985; Dixit 1992. Type. INDIA. Madhya Pradesh, Bastar-Kutumsar: Kanger valley, 19 Fed 1963, Panigrahi 1119 (holotype: CAL; isotype: BSA).

= S. nairii R.D. Dixit, Bull. Bot. Surv. India 26(2-Jan): 106. 1985; Dixit 1992. Type. INDIA. Orissa, Jeypore, c. 850 m., 17 Sep 1970, Nair 40637 " (holotype: CAL); INDIA. Orissa, Jeypore, c. 850 m., 17 Sep 1970, Nair 40637A (isotype: CAL); INDIA. Orissa, Devighat, 900 m., 22 Sep 1970, Nair 40692 (paratype: CAL).

Description.

Stems 6-15 cm, erect or suberect. Rhizophores in basal part or one-third creeping stem and branches, on ventral side in axils of stem branches. Main stems, much branched, slender, primary branches on intervals, 0.8-1.2 mm in diam. in lower part, second branches simple or forked. Axillary leaves, ovate, 0.9-1.3 × 0.5-0.8 mm, base rotundate, margin dentate, apex subacute. Ventral leaves ovate, 1.7-2 × 0.7-1 mm, base rotundate, basiscopic base slightly denticulate, acroscopic base rounded, not overlapping stem and branches, margin denticulate, apex subobtuse to subacute. Dorsal leaves ovate, 0.7-1 × 0.3-0.5 mm, oblique, margin thickened, distantly serrulate, apex acute to very slightly acuminate. Strobili solitary, terminal, compact, 4-7 × 1.5-3 mm. Sporophylls dimorphic, dorsal sporophylls ovate-oblong, margin ciliolate, apex acuminate; ventral sporophylls ovate, sub-pellucid, margin ciliolate, apex shortly acute. Megaspore yellow or dark-brown, surface granulose; microspores orange, surface smooth granulose.

Ecology.

Growing in groups on moist shaded rocks and banks at the bases of hills. Alt. 1100-3700 m.

Distribution in Nepal.

W, C, E.

Nepalese threatened status: not available data.

General distribution.

BANGLADESH, BHUTAN, INDIA (Assam State, Chhattisgarh, Jammu and Kashmir, Kerala, Madhya Pradesh, Meghalaya, Odisha, Rajasthan, Sikkim, Tamil Nadu, Uttarakhand, West Bengal), MYANMAR.

Chromosome number.

Not available data.

Selected specimens examined:

C Nepal: KASKI: "below Mahendra Pul Power-house, N part of Pokhara. Among rocks and below cliffs on both sides of river at N entrance to Seti river gorge, 5 Jan 1998, C.R. Fraser-Jenkins, L.B. Tamang, G. Pariyar 25841 (FN 1819)" (US, photo).

DOLAKHA: "Jiri, Dolakha, alt. 2000-2500 m, 3 Oct 1988, T. Nakaike 3064 " (PE); "Jiri, Dolakha, alt. c. 2200 m, 4 Oct 1988, T. Nakaike 3075 " "l.c. 3076 " (PE). "near Pashupatinath, alt. c. 1340 m, 5 Oct 1979, T. Nakaike 117 " (PE); "Pasupatinath. 21 Sep 1986, T. Nakaike 1760 " (PE).

Figures

Figure 8. Morphological diversity of the leaves of Nepalese Sealginella species 1 A-C S. reticulata (Nakaike 1760, PE) 2 A-C S. subdiaphana (Zhang 5, PE) 3 A-C S. tenuifolia (PE-Xizang Exped. PE 6280, PE). A - Axillary leaves, B - Dorsal leaves, C - Ventral leaves. Scale bars: 0.2 mm.

Figure 11. Diversity strobili of Nepalese Selaginella species A S. chrysorrhizos (Nakaike 3708, PE) B S. reticulata (Nakaike 1760, PE) C S. subdiaphana (Zhang 5, PE) D S. tenuifolia (PE-Xizang Exped. PE 6280, PE). Scale bars: 1 mm (A, D), 2 mm (B, C).

Figure 33. Selaginella reticulata (Hook. & Grev.) Spring A (A 1) Habit, lower surface B strobilus, lower surface C fragment of the lower surface of the lateral branches D fragment of the upper surface of the lateral branches (T. Nakaike 1760, PE).