Flora of North America species comparison

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Oxytropis scammaniana

Scamman's locoweed, Scamman's oxytrope
Habit Plants cespitose, low-growing, appearing acaulescent; caudex usually subterranean; branches elongate, often with persistent, stramineous stipules.
Leaves

2–9 cm;

stipules membranous, stramineous, glabrous or sparsely pilose, margins ciliate;

leaflets 9–13, opposite, blades lanceolate to elliptic, 4–15(–22) × 1–4(–6) mm, apex acute to obtuse, surfaces sparsely pilose or glabrous.
Racemes

(1 or)2 or 3(–5)-flowered.
Peduncles

2–8 cm, sparsely appressed-pilose, hairs may be black distally;

bract lanceolate, black-pilose.
Corollas

usually purplish, rarely white, 12–17(–20) mm.
Calyces

campanulate, densely spreading black-pilose;

tube 4.5–6 mm, slightly enlarging, covering less than 1/8 of fruit, lobes 1.5–4(–5.5) mm.
Legumes

borne aloft, erect, sessile, oblong-ellipsoid, 11–18(–20) × 5–7 mm, subunilocular, membranous, black-pilose or, sometimes, white-pilose, rarely glabrous.
2n

= 32.

Oxytropis scammaniana
Phenology Flowering summer.
Habitat Moist arctic and alpine tundra, heathlands, rocky slopes, talus, scree.
Elevation 500–2200 m. (1600–7200 ft.)
Distribution
from FNA
AK; BC; NT; YT
[BONAP county map]
Discussion

The inflorescences and fruits of Oxytropis scammaniana resemble those of O. mertensiana, possibly its nearest ally in North America. Oxytropis scammaniana is a species of conservation concern in British Columbia.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Oxytropis
Sibling taxa
O. arctica, O. besseyi, O. borealis, O. campestris, O. deflexa, O. huddelsonii, O. kobukensis, O. kokrinensis, O. lagopus, O. lambertii, O. maydelliana, O. mertensiana, O. multiceps, O. nana, O. nigrescens, O. oreophila, O. parryi, O. podocarpa, O. riparia, O. sericea, O. splendens
Name authority Hultén: Ark. Bot. 33B(1): 4, fig. 2. (1947)
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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