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Astragalus beckwithii

Weiser's milkvetch

California milkvetch, Klamath milkvetch

Habit Plants perennial, caulescent, villous-villosulous, hairs basifixed.
Stems

several–numerous, decumbent to ascending; leafless at bases, 15–50 cm.

Leaves

3–8.5 cm;

leaflets 13–21, elliptic-oblong to oblanceolate; (4)6–20(23) × 2–4 mm;

tips truncate-retuse to obtuse;

surfaces usually strigillose;

stipules 1.5–6.5 mm; at least lowermost connate-sheathing.

Inflorescences

racemes loosely 10–30-flowered;

peduncles (3)6–14 cm;

bracts (1.5)2–5 mm;

pedicels 1.3–3.5 mm;

bracteoles 0–2.

Flowers

declined or nodding at anthesis;

calyces 6.4–9.7 mm; silky villous with white and some black hairs;

tubes 5.2–7 mm;

teeth triangular, 0.9–3 mm;

corollas 11.5–17.4 mm, ochroleucous or yellowish;

ovules (15)19–27.

Fruits

unilocular, pendulous, linear-oblong, strongly laterally compressed; straight or slightly decurved, bicarinate, 27–43 × 3.4–5 mm, sparsely to densely strigillose, rarely glabrous;

valves papery;

stipes 8–14 mm.

Astragalus beckwithii

Astragalus californicus

Distribution
[WildflowerSearch map]
[BONAP county map]
[WildflowerSearch map]
[BONAP county map]
Discussion

Oak woodlands, coniferous forests, chaparral. Flowering Mar–May. 600–1400 m. Sisk. CA. Native.

Source Flora of Oregon, volume 2, page 659
Richard Halse
Sibling taxa
A. accidens, A. agrestis, A. alpinus, A. alvordensis, A. applegatei, A. arthuri, A. atratus, A. australis, A. californicus, A. calycosus, A. canadensis, A. caricinus, A. collinus, A. conjunctus, A. curvicarpus, A. cusickii, A. diaphanus, A. drummondii, A. eremiticus, A. filipes, A. gambellianus, A. geyeri, A. hoodianus, A. howellii, A. inflexus, A. iodanthus, A. kentrophyta, A. lemmonii, A. lentiginosus, A. malacus, A. misellus, A. mulfordiae, A. multiflorus, A. newberryi, A. nudisiliquus, A. obscurus, A. peckii, A. platytropis, A. purshii, A. reventus, A. robbinsii, A. salmonis, A. sclerocarpus, A. sheldonii, A. solitarius, A. spaldingii, A. sterilis, A. succumbens, A. tegetarioides, A. tetrapterus, A. toanus, A. tweedyi, A. tyghensis, A. umbraticus, A. vallaris, A. whitneyi
A. accidens, A. agrestis, A. alpinus, A. alvordensis, A. applegatei, A. arthuri, A. atratus, A. australis, A. beckwithii, A. calycosus, A. canadensis, A. caricinus, A. collinus, A. conjunctus, A. curvicarpus, A. cusickii, A. diaphanus, A. drummondii, A. eremiticus, A. filipes, A. gambellianus, A. geyeri, A. hoodianus, A. howellii, A. inflexus, A. iodanthus, A. kentrophyta, A. lemmonii, A. lentiginosus, A. malacus, A. misellus, A. mulfordiae, A. multiflorus, A. newberryi, A. nudisiliquus, A. obscurus, A. peckii, A. platytropis, A. purshii, A. reventus, A. robbinsii, A. salmonis, A. sclerocarpus, A. sheldonii, A. solitarius, A. spaldingii, A. sterilis, A. succumbens, A. tegetarioides, A. tetrapterus, A. toanus, A. tweedyi, A. tyghensis, A. umbraticus, A. vallaris, A. whitneyi
Subordinate taxa
A. beckwithii var. weiserensis
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