Flora of North America species comparison

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Astragalus sect. Hemiphragmium
Habit Herbs perennial, caulescent; caudex superficial or subterranean in talus.
Stems

few to several.
Leaves

odd-pinnate, usually sessile, rarely petiolate;

leaflets 5–19.
Racemes

loosely or subcompactly flowered, flowers ascending.
Corollas

whitish or cream, often suffused with lilac or purple-veined, keel apex maculate, banner recurved through 40–50°, wing apex unequally bilobed, keel apex blunt.
Calyx

tubes campanulate.
Legumes

persistent, stipitate, pendulous or spreading, asymmetrically ellipsoid, laterally compressed [inflated], usually bilocular or semibilocular.
Seeds

8–16.
Hairs

basifixed.
Stipules

distinct or connate at proximal nodes.

Astragalus sect. Hemiphragmium
Distribution
North America; Europe; Asia
Discussion

Species ca. 20 (1 in the flora).

Section Hemiphragmium consists of about twenty species of alpine Europe, interior montane Asia, northward into arctic Siberia, and one species of arctic and temperate North America from Alaska to Quebec and southward into the western cordillera.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Astragalus
Subordinate taxa
Synonyms Phaca section hemiphragmium
Name authority (W. D. J. Koch) Bunge: Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 11(16): 21. (1868)
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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