Difference between revisions of "Trollius albiflorus"

(A. Gray) Rydberg

Mem. New York Bot. Gard. 1: 152. 1900.

Common names: White globe-flower
EndemicSelected by author to be illustrated
Basionym: Trollius laxus var. albiflorus A.Gray Amer. J. Sci. Arts, ser. 2, 33: 241. 1862
Treatment appears in FNA Volume 3.
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|name=Trollius laxus var. albiflorus
 
|name=Trollius laxus var. albiflorus
 
|authority=A.Gray
 
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|genus=Trollius
 
|genus=Trollius
 
|species=Trollius albiflorus
 
|species=Trollius albiflorus

Revision as of 19:54, 24 September 2019

Stems 0.7-5.5 dm (to 8dm in fruit), base with few petioles persistent from previous year. Leaves: basal leaves with petioles 4-25 cm, some leaves reduced to sessile, ovate membranous scales; cauline leaves 1-3(-5), with broad, clasping, membranous sheaths. Flowers 2.5-5 cm diam.; sepals 5-9, spreading, white when fresh (pale yellow to greenish white before anthesis), ovate to obovate or nearly orbiculate, 10-20 mm; petals 15-25, yellow, 1/2-2/3 length of stamens when pollen shed, 3-6 mm. Follicles usually 11-14, 8-16 mm including beak; beak often somewhat recurved, sometimes straight. 2n=16.


Phenology: Flowering summer.
Habitat: Open, wet places, ±acidic, montane to alpine
Elevation: 1200-3800 m

Distribution

V3 516-distribution-map.gif

Alta., B.C., Colo., Idaho, Mont., Utah, Wash., Wyo.

Discussion

The diploid Trollius albiflorus is isolated from the tetraploid T. laxus ecologically, geographically, and reproductively, although it often has been treated as a variety of the latter.

Identities of specimens of Trollius albiflorus and the superficially similar Anemone narcissiflora subsp. zephyra in Colorado and Wyoming are sometimes confused. Close examination reveals a number of differences. The anemone has sepals yellow (not white), leaf blades and flowering stems pilose to villous (not glabrous), achenes (not follicles), and leaflike bracts subtending the pedicels and whorled (leaves alternate in Trollius).

Selected References

None.

Lower Taxa

None.
... more about "Trollius albiflorus"
Bruce D. Parfitt +
(A. Gray) Rydberg +
Trollius laxus var. albiflorus +
White globe-flower +
Alta. +, B.C. +, Colo. +, Idaho +, Mont. +, Utah +, Wash. +  and Wyo. +
1200-3800 m +
Open, wet places, ±acidic, montane to alpine +
Flowering summer. +
Mem. New York Bot. Gard. +
Endemic +  and Selected by author to be illustrated +
Trollius albiflorus +
Trollius +
species +