Helonias yunnanensis (W.W.Sm. & Jeffrey) Tanaka (1998a: 105)

Tanaka, Noriyuki, 2019, Taxonomy, evolution and phylogeography of the genus Helonias (Melanthiaceae) revisited, Phytotaxa 390 (1), pp. 448-450 : 448-450

2. Helonias yunnanensis (W.W.Sm. & Jeffrey) Tanaka (1998a: 105) ( Figs. 7–9 ).

≡ Ypsilandra yunnanensis Smith & Jeffrey (1916: 143) . Type (lectotype designated in Lin et al. 2014: 414):― CHINA. Yunnan, shady situations in thickets on Shweli-Salween divide, lat. 25°20’ N, elev. 9,000 ft, August 1913, G. Forrest 12055 (PE-00035459*!). Isolectotypes: BM*!, E-00115522!, K-000400240*!, PE-00593975*!, TI!

Chinese name:―Yunnan-yaruihua.

Japanese name:―Himaraya ( Himalaya )-shôjôbakama (nov.).

Distribution:― Bhutan, China (Xizang, Yunnan), India (Assam), Myanmar, Nepal (Fig. 15-Yy, -Ym).

Identification key to varieties of Helonias yunnanensis

1.

Figures

FIGURE 7. Helonias yunnanensis var. yunnanensis. A. Habit and habitat (Y-1; photo on 24 May 2014). B. Closeup of inflorescence (Y-1 on 24 May 2014). C–E. Isolectotype (G. Forrest 12055, E-00115522). C. Habit. D, E. Closeup of inflorescence. F. Part of infructescence with dehisced capsules (G. Forrest 14961, E-00115516). G. Seeds (Gaoligongshan Biodiversity Survey 27019, GH-00293355). Photos A & B by Yang Niu.

FIGURE 8. Helonias yunnanensis var. mesostyla from N Myanmar (Kermode 17139, holotype, K-001235138). A. Habit. B, C. Closeup of inflorescence.

FIGURE 9. Helonias yunnanensis var. mesostyla. A. Flower with frontal tepal and stamen removed.B. Pistil.C. Fruit with persistent floral parts. One frontal tepal removed. D. Two seeds. A, B from N Myanmar (Kermode 17139, holotype, K-001235138). C, D from Yunnan, China (Gaoligongshan Biodiversity Survey 32015, GH-00292433). Scale on right corner for B and D. Drawn by Noriyuki Tanaka.