Flora of North America species comparison

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Oxytropis deflexa var. sericea

Oxytropis deflexa var. foliolosa
Photo is of parent taxon

blue nodding locoweed, blue pendent-pod oxytrope, nodding locoweed, pendent-pod crazyweed, pendent-pod locoweed, short-stem oxytrope, silky locoweed, silky nodding locoweed, silky oxytrope
Photo is of parent taxon

foliose locoweed, foliose nodding locoweed, foliose oxytrope, nodding locoweed
Habit Plants caulescent or appearing acaulescent; herbage usually conspicuously long-villous. Plants appearing acaulescent, sometimes with 1(or 2) developed internodes; herbage sparsely pilose.
Racemes

usually 10–25-flowered, subcylindric, usually much elongate in fruit.

densely (2–)4–10-flowered, hemispheric or subcapitate to shortly subcylindric, slightly elongate in fruit, with more flowers.
Corollas

usually dirty white or variously suffused with purple.

usually bright pink-purple or purple.
2n

= 16.

Oxytropis deflexa var. sericea

Oxytropis deflexa var. foliolosa
Phenology Flowering summer. Flowering summer.
Habitat Spruce-fir, aspen, willow, alder, and meadow communities. Tundra, conifer, aspen, birch, and alder communities, gravel bars, roadsides.
Elevation 0–3200 m. (0–10500 ft.) 0–3700 m. (0–12100 ft.)
Distribution
from FNA
AK; CA; CO; ID; MT; ND; NM; OR; UT; WA; WY; AB; BC; MB; NT; NU; ON; SK; YT
[BONAP county map]
from FNA
AK; ID; MT; NV; UT; WY; AB; BC; NB; NL; NT; NU; ON; QC; YT
[BONAP county map]
Discussion

Variety sericea is the common phase of Oxytropis deflexa south of the Arctic. The variety is highly variable, especially in size and aspect of flowers. Flowers of some of the variants appear not to open, as if they were cleistogamous. The Pan-Arctic Flora (http://panarcticflora.org/) treats var. sericea as O. deflexa subsp. retrorsa.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Though usually appearing acaulescent in alpine and shore situations, plants of var. foliolosa frequently have one or two evident internodes in lower elevation habitats along stream systems. Specimens intermediate between this and var. sericea are not uncommon. Assignment of all specimens to one or the other of the varieties is not always possible. The Pan-Arctic Flora (http://panarcticflora.org/) treats var. foliolosa as Oxytropis deflexa subsp. dezhnevii (Jurtzev) Jurtzev.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Oxytropis > Oxytropis deflexa Fabaceae > subfam. Faboideae > Oxytropis > Oxytropis deflexa
Sibling taxa
O. deflexa var. foliolosa, O. deflexa var. pulcherrima
O. deflexa var. pulcherrima, O. deflexa var. sericea
Synonyms O. deflexa subsp. retrorsa, O. deflexa var. culminis, O. retrorsa, O. retrorsa var. sericea O. foliolosa, Aragallus foliolosus, Astragalus deflexus var. foliolosus, O. deflexa subsp. foliolosa
Name authority Torrey & A. Gray: Fl. N. Amer. 1: 342. (1838) (Hooker) Barneby: Leafl. W. Bot. 6: 111. (1951)
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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