Astragalus miser var. hylophilus |
Astragalus sect. Genistoidei |
|
---|---|---|
woodlands weedy milkvetch, woody milkvetch |
|
|
Habit | Herbs perennial, caulescent; caudex superficial or subterranean. | |
Herbage | strigulose-pilosulous, hairs basifixed. |
|
Stems | 1–15 cm. |
few or several to many. |
Leaves | (3–)4.5–19 cm; leaflets (9 or)11–21, blades narrowly to broadly elliptic, lanceolate, or lanceolate-oblong, (3–)5–26 mm, apex acute, obtuse, obtuse and apiculate, or, rarely, retuse, surfaces glabrous or sparsely pubescent. |
odd-pinnate, petiolate to short-petiolate; leaflets (1 or)3–21, or reduced to phyllodium, sometimes terminal leaflet decurrent and not jointed to rachis. |
Racemes | (3–)6–16-flowered; axis (1–)1.5–7(–7.5) cm in fruit. |
loosely flowered, flowers often ascending then declined. |
Flowers | calyx (3.8–)4–5.6 mm, tube 2.6–3.5 mm, lobes (0.9–)1–2.3 mm; corolla whitish, sometimes purple-veined; banner (5.2–)6.5–13 mm; keel (7.1–)8–10(–11.4) mm. |
|
Corollas | whitish, ochroleucous, lilac, or purple to pink-purple, banner recurved through 40–90°, keel apex obtuse, broadly triangular, or acute-triangular and beaklike. |
|
Calyx | tubes campanulate. |
|
Legumes | linear, linear-ellipsoid, or -oblanceoloid, (15–)18–25 × 2.5–4 mm, usually glabrous, rarely with few, scattered hairs. |
persistent, sessile or substipitate, declined-pendulous, spreading, or ascending, linear to linear-ellipsoid, oblanceoloid, or narrowly oblong, laterally compressed and 2-sided, unilocular. |
Seeds | (6 or)7–11. |
6–26. |
Hairs | basifixed or malpighian. |
|
Stipules | connate or distinct at distal nodes. |
|
Astragalus miser var. hylophilus |
Astragalus sect. Genistoidei |
|
Phenology | Flowering Jun–Aug. | |
Habitat | Meadows, banks, open parklands with lodgepole pine, Douglas-fir, and ponderosa pine. | |
Elevation | 900–2900 m. (3000–9500 ft.) | |
Distribution |
ID; MT; SD; WY |
w North America |
Discussion | Variety hylophilus occurs in the Rocky Mountains of western Wyoming and western Montana (and immediately adjoining Idaho), and the Black Hills of South Dakota. Variety hylophilus is sympatric, in part, with vars. crispatus, miser, and tenuifolius. Its distinction may be preserved by ecological isolation; of the four varieties it is the most mesic, whereas the others are more xerophytic (D. Isely 1998). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Species 3 (3 in the flora). Section Genistoidei consists of three species that are widespread through the Rocky Mountains and intermontane United States, from British Columbia and Alberta southward to Washington, Arizona, and South Dakota. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Homalobus hylophilus | Homalobus |
Name authority | (Rydberg) Barneby: Amer. Midl. Naturalist 55: 482. (1956) | (Torrey & A. Gray) Barneby: Leafl. W. Bot. 5: 25. (1947) |
Web links |