Higgins' freckled milkvetch, Higgins' milkvetch
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freckled milkvetch, straw milkvetch
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Plants perennial, 15–25 cm. |
Plants perennial (short-lived), 12–40(–65) cm, herbage cinereous or green. |
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ashy canescent or green. |
3–11 cm; leaflets 15–21, blades lanceolate-elliptic to obovate, 8–18 mm, apex emarginate. |
(2.5–)4–11(–13) cm; leaflets (9 or)11–15, blades broadly oblanceolate or obovate-cuneate, (3–)5–18 mm, apex openly notched. |
7–17-flowered, short and compact in fruit; axis 1–4 cm in fruit. |
loosely or remotely 15–25(–30)-flowered, lax and open in fruit; axis 5–18 cm in fruit. |
3–6.5 cm. |
3.5–9 cm. |
17–20 mm; calyx 7–10.4 mm, tube 6–6.8 mm, lobes 3–3.5 mm; corolla pale violet. |
11–12 mm; calyx 5–6.6 mm, tube 3.8–4.5 mm, lobes 1.2–2.1 mm; corolla pale purple. |
green, sometimes mottled, becoming stramineous, ovoid, greatly inflated, 19–27 × 11–16(–19) mm, semibilocular, stiffly papery, thinly translucent, glabrous. |
greenish, usually mottled, becoming stramineous, obliquely ovoid-acuminate, bladdery-inflated, (10–)17–26 × 10–16 mm, bilocular, somewhat stiffly papery, opaque, strigulose; beak (2–)3–7 mm, unilocular. |
30–35. |
20–26. |
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Flowering Apr–early Jun. |
Flowering Apr–May. |
Sandy to loamy soils, with Ptelea-Rhus-Prosopis, and yucca, oak, mesquite communities. |
Mixed warm-desert shrub communities. |
800–1100 m. (2600–3600 ft.) |
900–1000 m. (3000–3300 ft.) |
NM; TX |
AZ; NV; UT |
Variety higginsii, from Chaves County in New Mexico, and Hudspeth, Hutchinson, and Potter counties in Texas, almost certainly is a derivative of var. diphysus, differing only in its pale flowers. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Variety stramineus is the only member of the species with moderate-sized, pale purple flowers known to occur in Washington County in Utah, and adjacent Arizona and Nevada; it is similar to the slightly smaller-flowered var. fremontii and to var. ambiguus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
FNA vol. 11. |
FNA vol. 11. |
Fabaceae > subfam. Faboideae > Astragalus > sect. Diphysi > Astragalus lentiginosus |
Fabaceae > subfam. Faboideae > Astragalus > sect. Diphysi > Astragalus lentiginosus |
A. lentiginosus var. albifolius, A. lentiginosus var. ambiguus, A. lentiginosus var. antonius, A. lentiginosus var. australis, A. lentiginosus var. chartaceus, A. lentiginosus var. coachellae, A. lentiginosus var. coulteri, A. lentiginosus var. diphysus, A. lentiginosus var. floribundus, A. lentiginosus var. fremontii, A. lentiginosus var. idriensis, A. lentiginosus var. ineptus, A. lentiginosus var. kennedyi, A. lentiginosus var. kernensis, A. lentiginosus var. latus, A. lentiginosus var. lentiginosus, A. lentiginosus var. macrolobus, A. lentiginosus var. maricopae, A. lentiginosus var. micans, A. lentiginosus var. mokiacensis, A. lentiginosus var. multiracemosus, A. lentiginosus var. negundo, A. lentiginosus var. nigricalycis, A. lentiginosus var. oropedii, A. lentiginosus var. palans, A. lentiginosus var. piscinensis, A. lentiginosus var. platyphyllidius, A. lentiginosus var. pohlii, A. lentiginosus var. salinus, A. lentiginosus var. scorpionis, A. lentiginosus var. semotus, A. lentiginosus var. sesquimetralis, A. lentiginosus var. sierrae, A. lentiginosus var. stramineus, A. lentiginosus var. toyabensis, A. lentiginosus var. trumbullensis, A. lentiginosus var. variabilis, A. lentiginosus var. vitreus, A. lentiginosus var. wahweapensis, A. lentiginosus var. wilsonii, A. lentiginosus var. yuccanus |
A. lentiginosus var. albifolius, A. lentiginosus var. ambiguus, A. lentiginosus var. antonius, A. lentiginosus var. australis, A. lentiginosus var. chartaceus, A. lentiginosus var. coachellae, A. lentiginosus var. coulteri, A. lentiginosus var. diphysus, A. lentiginosus var. floribundus, A. lentiginosus var. fremontii, A. lentiginosus var. higginsii, A. lentiginosus var. idriensis, A. lentiginosus var. ineptus, A. lentiginosus var. kennedyi, A. lentiginosus var. kernensis, A. lentiginosus var. latus, A. lentiginosus var. lentiginosus, A. lentiginosus var. macrolobus, A. lentiginosus var. maricopae, A. lentiginosus var. micans, A. lentiginosus var. mokiacensis, A. lentiginosus var. multiracemosus, A. lentiginosus var. negundo, A. lentiginosus var. nigricalycis, A. lentiginosus var. oropedii, A. lentiginosus var. palans, A. lentiginosus var. piscinensis, A. lentiginosus var. platyphyllidius, A. lentiginosus var. pohlii, A. lentiginosus var. salinus, A. lentiginosus var. scorpionis, A. lentiginosus var. semotus, A. lentiginosus var. sesquimetralis, A. lentiginosus var. sierrae, A. lentiginosus var. toyabensis, A. lentiginosus var. trumbullensis, A. lentiginosus var. variabilis, A. lentiginosus var. vitreus, A. lentiginosus var. wahweapensis, A. lentiginosus var. wilsonii, A. lentiginosus var. yuccanus |
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Cystium stramineum |
S. L. Welsh & K. H. Thorne: Brittonia 33: 296, fig. 2. (1981) |
(Rydberg) Barneby: Leafl. W. Bot. 4: 122. (1945) |
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