Selaginella subdiaphana (Wall. ex 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 subdiaphana (Wall. ex Hook. & Grev.) Spring Figs 8 (2 A–C), 11C , 34

Selaginella subdiaphana (Wall. ex Hook. & Grev.) Spring, Bull. Acad. Roy. Soc. Brux. 10: 232. 1843; Iwatsuki 1988; Dixit 1992; Thapa 2002; Fraser-Jenkins et al. 2015; Fraser-Jenkins et al. 2017; Zhang 2018.

≡ Lycopodium subdiaphanum Wall. ex Hook. & Grev., Bot. Misc. 2: 401. 1831.

- Lycopodium subdiaphanum Wall. nom. nud. Type. INDIA. Montains of Sylhet and Kamoon. Dr. Wallich n. 136 (syntypes: K; B [20 0147161-A]).

= Selaginella aggesta Spring, Monogr. Lyc. II: 89, no. 31. 1850. Type. INDIA. Gorval, Griffith (holotype: K [001067489]).

= Selaginella glauca Spring, Mém. Acad. Roy. Sci. Belgique 24(2): 252. 1850. Type. INDIA. Imperio Assam. Mack (H. Hooker) (holotype: K?).

= Selaginella schlagintweitii Hieron., Bot. Jahrb. Engl. 50: 2, 41, n. 17. 1913. Type. INDIA. Khasia, X 1855, Schlagintweit 117 (holotype: B?).

= Selaginella namdaphaensis Sarn. Singh & Panigrahi, Ferns Fern-Allies Arunachal Pradesh 1: 64. 2005. Type. INDIA. Tirap District "[now Changlang District]", Miao-Vijaynagar, 40th-41st mile, 800 m., 30 Sep 1980, S. Singh 74317 (holotype: CAL; isotype: ASSAM).

Description.

Stems 10-35 cm, creeping or suberect. Rhizophores restricted to lower one-third part of main stems, 0.8-2.1 mm in diam. in lower part. Stem slender, sulcate. Axillary leaves ovate, 1.5-2.8 × 0.5-1.8 mm, in basal part cordate, margin in basal part ciliolate, in middle and upper dentate to denticulate, apex acuminate. Ventral leaves ovate to ovate-lanceolate, 1.7-3.2 × 0.8-1.7 mm, in base slightly auriculate, basiscopic base entire, acroscopic base endlanged, broadly overlapping stem and branches, margin ciliate-dentate at base, entire towards apex, apex subobtuse. Dorsal leaves ovate, 1.2-1.6 × 0.5-0.7 mm base obtuse or slightly subcordate, margin ciliolate to denticulate, apex acute to short acuminate. Strobili solitary, terminal, compact, 4.0-8.2 × 2.0-4.0 mm. Sporophylls dimorphic, dorsal sporophylls ovate, margin denticulate, sub-acute; ventral sporophylls ovate, margin ciliolate, apex acute. Megaspores bright red, surface warty; microspore slightly-orangy red, surface warty.

Ecology.

On damp sheltered earth banks. Alt. 350-2500 m.

Distribution in Nepal.

W, C, E.

Nepalese threatened status: not available data.

General distribution.

BHUTAN, CHINA (Yunnan, Xizang (Naramu County)), INDIA (Assam State, Himachal Pradesh, Jammu and Kashmir, Manipur, Meghalaya, Nagaland,?Odisha, Punjab, Sikkim, Uttarakhand, West Bengal).

Chromosome number.

2n=16 ( Loyal 1976; Loyal and Kumar 1984).

Selected specimens examined:

W Nepal: DANG: "Between Kurpani and Ghorai, alt. 4000 ft, 4 Sep 1952, O. Polunin, W.R. Sykes & L.H.J. Williams 1331 " (KYO, photo).

C Nepal: RASUWA: "Langtang: between Ramche and Betrawati, 800-1800 m, 9 Sep 1986, T. Nakaike 1427 " (PE).

KASKI: "en route from Huenda to Naudanda, alt. 1100-1300 m, 21 Sep 1976, Y. Suehiro 190 " (KYO, photo); "l.c. Y. Suehiro 184 (II-1)" (PE); "Chomrong, alt. 2200 m, 26 Sep 1976, Y. Suehiro 2298 (Q4-I)" (KYO, photo).

SYANGJA: "en route from Hyenda to Naudanda, alt. 1100-1300 m, 21 Sep 1976, Y. Suehiro 204 " (TI, photo).

KATHMANDU: "Gokarna Ban, Kathmandu, alt. 1350 m, 29 Oct 1988, T. Nakaike 3559 " (PE); "l.c. 3551 " (PE); "Kathmandu, alt. 1350 m, 3 Sep 1954, A. Zimmermann 1005 " (KYO, photo).

MAKAWANPUR: "Balephi Khola, 27°50'N, 85°46'E, alt. 1000 m, 22 Aug 1971, J.F. Dobremez DBR NEP 829 " (E00670681).

NUWAKOT: "Berdawati [Betrawati], alt. 850 m, 15 Sep 1972, A. Maire AMA 450 " (E00670578);

E Nepal: TAPLEJUNG: "Shewaden (2600 m)-Mewa Khola (2100 m)-Papung (2000 m), alt. c. 2400 m, 29 Jun 1972, H. Kanai et al. 725350B [873274]" (KYO, photo).

SANKHUWASABHA: "Telok, 27°22'N, 87°50'E, alt. 1200 m, J.F. Dobremez DBR NEP 1323 "(E00754785); "Sankhuwasabha Distr.: Khandbari (1150 m)-Mani Bhanjyang (1150 m)-Sekaha (1450 m)-Botebus (1800 m), 27 Jul 1977, H. Ohashi et al. 771545 " (TI, photo).

DHANKUTA: "Dhankuta, 26°50'N, 87°20'E, alt. 400 m, 11 Oct 1971, J.F. Dobremez DBR NEP 1371 " (E00670582, E00670586); "Chittre, 27°06'N, 87°25'E, alt. 2200 m, J.F. Dobremez DBR NEP 1483 "(E00668256).

SUNSARI: "Dharan-Sanguri Bhanjyang, alt. 1300 m, 2 Jun 1972, H. Kanai et al. 725032 " (E00670676); "Dharan, 26°49'N, 87°18'E, alt. 800 m, 04 Sep 1971, J.F. Dobremez DBR NEP 1779 " (E00670604); "Dharan 400 m-Sanguri Bhanjyang 1300 m, 2 Jun 1972, H. Kanai et al. 725032 [872266]" (KYO, photo).

MORANG: "Chisapini, alt. 500 m, 26°50'N, 87°55'E, J.F. Dobremez DBR NEP 1170 "(E00670677 & E00754782).

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 34. Selaginella subdiaphana (Wall. ex Hook. & Grev.) Spring A (A 1) Habit, upper surface B (B 1, B 2) habit, lower surface C fragment of the upper surface of the lateral branches D fragment of the lower surface of the lateral branches E Strobilus, lower surface (J. F. Dobremez DBR NEP 829, E). Link: (http: // data. rbge. org. uk / herb / E 00670681).