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Astragalus beckwithii

Weiser's milkvetch

Hood River milkvetch

Habit Plants perennial, subacaulescent or shortly caulescent, strigose, villosulous, or pilosulose, hairs basifixed.
Stems

several, ascending to erect; in clumps, 15–45 cm.

Leaves

(5)7–20 cm;

leaflets 25–37, linear-elliptic, oblong, oblanceolate to ovate-oblong, 5–27 × 1.5–5 mm;

tips obtuse; acute or retuse;

surfaces pubescent;

terminal leaflet often confluent with rachis;

stipules (3)5–11 mm; at least lowermost connate-sheathing.

Inflorescences

racemes oval or oblong; soon elongating, densely (6)10–30-flowered;

peduncles 12–30 cm;

bracts 2–9.5 mm;

pedicels 1–3.7 mm;

bracteoles 0–2.

Flowers

spreading to ascending at anthesis;

calyces 10–15 mm, strigillose-pilosulose with all black or mixture of black and white hairs;

tubes 5.7–7.9 mm;

teeth lanceolate or lance-caudate; (2.6)4.6–7 mm;

corollas 18–23 mm, cream, unspotted;

ovules 16–20.

Fruits

unilocular or incompletely bilocular; erect, broadly oblong-ovoid to narrowly oblong-ellipsoid,

±

straight, obcompressed, 11–22 × 4.5–7.2 mm, hirsutulose or villosulous;

valves coriaceous to subligneous;

stipes 0.

Astragalus beckwithii

Astragalus hoodianus

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

Grassy, rocky or sandy slopes. Flowering Apr–Jun. 50–700 m. Col, ECas. WA. Native.

Source Flora of Oregon, volume 2, page 665
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. 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. 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
Synonyms Astragalus conjunctus var. oxytropidoides, Astragalus reventus var. oxytropidoides, Cnemidophacos knowlesianus
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