Flora of North America species comparison

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Oxytropis nigrescens var. lonchopoda
Photo is of parent taxon

blackish locoweed, Ogilvie Range locoweed
Habit Plants loosely cespitose, herbage loosely pilose, caudex branches elongate and spreading.
Leaflets

11–15, blade surfaces loosely pilose.
Racemes

2-flowered.
Peduncles

0.3–2.1 cm.
Legumes

stipitate, stipe 4–5 mm, subequal to calyx tube;

body ellipsoid to cylindroid, villous.

Oxytropis nigrescens var. lonchopoda
Phenology Flowering summer.
Habitat Alpine tundra.
Elevation 1200–1700 m. (3900–5600 ft.)
Distribution
from FNA
YT
[BONAP county map]
Discussion

There is considerable variation in stipe length through the range of Oxytropis nigrescens. The localization of an elongated stipe in var. lonchopoda, known only from the Ogilvie Mountains, demonstrates a coincidence of that feature with the similar O. podocarpa, whose fruit is much more inflated and in which the leaflets are usually falcate.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Oxytropis > Oxytropis nigrescens
Sibling taxa
O. nigrescens var. nigrescens, O. nigrescens var. uniflora
Synonyms O. nigrescens subsp. lonchopoda
Name authority Barneby: Leafl. W. Bot. 10: 23. (1963)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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