Veratrum mengtzeanum, Loesener, 1926

Trias-Blasi, Anna & Suksathan, Piyakaset, 2013, Delimitation in the Veratrum mengtzeanum-V. chiengdaoense complex (Melanthiaceae) in Thailand based on morphology, with commentary on conservation status, Phytotaxa 96 (1), pp. 54-62 : 59

Key to the subspecies of V. mengtzeanum

1. Flowers per individual 16–130. Filament length 3.4–7.5 mm ....................................................... subsp. mengtzeanum

- Flowers per individual 155–226. Filament length 1.2–2.9 mm .............................................................. subsp. phuwae

1a. Veratrum mengtzeanum subsp. mengtzeanum ( Figs. 3–5 )

Figures

FIGURE 3. Veratrum mengtzeanum subsp. mengtzeanum: A-B Flowering habit. C. Inflorescence apex. D. Functionally staminate flower. E. Perfect flower. F. Fruit. G. Seed. A and C from Fig. 4-5. B, D and E from Forrest 22186 (K). F and G from Smitinand 7770 (BKF) (Drawings by Lucy Smith).

FIGURES 4–5. Veratrum mengtzeanum subsp. mengtzeanum (from: Doi Chiangdao, Chiang Mai province, Thailand; photos by Piyakaset Suksathan).