Veratrum album var. oxysepalum

(Turczaninow) Miyabe & Kudô

in K. Miyabe and T. Miyake, Fl. Saghalin, 484. 1915.

Basionym: Veratrum oxysepalum Turczaninow Bull. Soc. Imp. Naturalistes Moscou 13: 79. 1840
Treatment appears in FNA Volume 26. Treatment on page 76. Mentioned on page 73.

Stems 0.3–1 m, glabrous proximally, villous in inflorescence. Leaves basal and proximal cauline ovate to elliptic, 10–25 × 5–18 cm, reduced distally, glabrous to sparsely villous at least on veins. Inflorescences spiciform-racemose or with few, short, ascending branches proximally, 0–10 cm, sparsely villous; bracts lanceolate, 1/2 as long as to equaling flowers, sparsely villous, ciliate. Tepals yellowish green, lanceolate to lance-ovate, not clawed, 7–12 mm, margins denticulate, sparsely villous at least in proximal 1/2; gland 1, basal, green to yellowish green, V-shaped; ovary subglabrous. Capsules elliptic to oblong, 1–1.5 cm, subglabrous. Seeds flat, broadly winged, 5–7 mm. 2n = 64.


Phenology: Flowering early summer–late fall.
Habitat: Wet, marshy soils in mesic tundra and Salix thickets
Elevation: 0–1000 m

Distribution

V26 63-distribution-map.jpg

Alaska, ne Russia, n Japan (Hokkaido).

Discussion

Selected References

None.

Lower Taxa

None.
Dale W. McNeal Jr. +  and Aaron D. Shaw +
(Turczaninow) Miyabe & Kudô +
Veratrum oxysepalum +
Alaska +, ne Russia +  and n Japan (Hokkaido). +
0–1000 m +
Wet, marshy soils in mesic tundra and Salix thickets +
Flowering early summer–late fall. +
in K. Miyabe and T. Miyake, Fl. Saghalin, +
Acelidanthus +, Evonyxis +  and Leimanthium +
Veratrum album var. oxysepalum +
Veratrum album +
variety +