Didymosperma gracilis Hook.f., Fl. Brit.

S., Mehmud & Roy, H., 2021, Didymosperma gracilis, a new synonym of Wallichia nana (Arecaceae), Rheedea 31 (2), pp. 89-91 : 91

Didymosperma gracilis Hook.f., Fl. Brit. India 6(18): 420. 1894. Type: INDIA, Arunachal Pradesh, Dafla (“Daphla”) Hills , s.d., Booth s.n. (holo K [ K000400178 digital image!]). syn. nov. Fig. 1 .

Specimens examined: INDIA, Arunachal Pradesh, Dibang valley, 26.03.1999, M. Bhaumik 2168 (ASSAM). Assam, Jorhat, Nambor R.F., 21.11.1964, S.K. Kataki 41649 (ASSAM 44563); Tinsukia, Bherjan, N 27̊3'27.2", E 95̊22'14.4", alt. 84 m, 03.09.2019, Selim Mehmud 169 (ASSAM, Herbarium of Department of Botany, Cotton University); West Karbi Anglong, Nellie to Umapanai road, 13.02.2020, Selim Mehmud 242 (Herbarium of Department of Botany, Cotton University).

Figures

Fig. 1. Wallichia nana Griff.: a. Young plant; b-d. Young fruits (arrow showing small leaf); e. Small leaf near the infructescence (arrow); f. Infructescence with dry fruit (arrow) and persistent perianth; g. Longitudinal cut of an immature fruit (1 & 2),seed (3) and a complete fruit (4); h. Dry seeds with embryo in central position (arrow).