Astragalus species

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Scientific Name Astragalus leptocarpus USDA PLANTS Symbol
ASLE10
Common Name Rare Loco Milkvetch, Slimpod Milkvetch ITIS Taxonomic Serial No.
25561
Family Fabaceae (Pea) Texas A&M Reference
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Description Low, weakly upright, annual 6 to 14 inches high; pinnately-compound leaves up to 2-3/4 inches long with each blade divided into 11 to 17 individual leaflets; few to several magenta flowers congested in short, roundish terminal clusters, 1/2-inch across. Descr. excerpt from www.uvalde.tamu.edu Texas Status
Native
Scientific Name Astragalus missouriensis USDA PLANTS Symbol
ASMI10
Common Name Missouri Milkvetch ITIS Taxonomic Serial No.
25585
Family Fabaceae (Pea) SEINet Reference
Description Habitat: Dry, sandy areas in prairies, meadows and roadsides.
Plant: Prostrate perennial with few to several hairy stems 1/2 to 6 inches long.
Leaves: Pinnately-compound leaves 1-5/8 to 5-1/2 inches long with each blade divided into 11 to 17 individual elliptic to narrowly obovate leaflets 1/4 to 3/4-inch long usually with pointed tips and densely-covered with appressed hairs on both surfaces giving a gray-green appearance.
Inflorescence: Short racemes on 1½ to 4-inch stems with 3 to 10 typical pea-like flowers; each flower with a broad upright banner, lavender to bright purple with white center and 1/2-inch or more long; two smaller lavender to bright purple lateral petals and keel; calyx up to 1/2-inch long and covered with appressed hairs, lobes pointed.
Bloom Period: March to June.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, Kansas Wildflowers and Grasses and www.americansouthwest.net.
Texas Status
Native
Scientific Name Astragalus nuttallianus var. austrinus USDA PLANTS Symbol
ASNUA
Common Name Smallflowered Milkvetch, Rio Fronteras Milkvetch ITIS Taxonomic Serial No.
192655
Family Fabaceae (Pea)
SEINet Reference
Description Habitat: Sandy or gravelly soils on slopes, streambeds, washes; western 2/3 of Texas, east to North Central Texas and south to Rio Grande.
Plant: Low-growing, creeping annual 1 to 2 inches tall; hairy green stems, becoming reddish, 4 to 20 inches long.
Leaves: < Pinnately-compound leaves 1 to 2 inches long overall, each with 5 to 17 small, hairy, elliptical or oblong leaflets less than 1/2-inch long, tips pointer or rounded, not notched.
Inflorescence: A few typical but tiny pea-like blossoms in a short terminal raceme, each less than 1/4-inch across; petals blue-to-purple with white center.
Bloom Period: February to May.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, "Wildflowers of the Texas Hill Country" by Marshall Enquist, www.americansouthwest.net.
Texas Status
Native
Scientific Name Astragalus nuttallianus var. nuttallianus USDA PLANTS Symbol
ASNUN
Common Name Smallflowered Milkvetch, Turkey-pea ITIS Taxonomic Serial No.
192671
Family Fabaceae (Pea)
SEINet Reference
Description Habitat: Roadsides and colonies in North Central Texas and eastern part of Plains, south to Edwards Plateau and Rio Grande.
Plant: Low-growing, creeping annual 1 to 2 inches tall; hairy green stems, becoming reddish, up to 12 inches long.
Leaves: Pinnately-compound leaves about 1 inch long overall with 6 pairs of tiny, hairy leaflets 0.3 inch long, elliptic to obovate with a notched tip.
Inflorescence: A few typical but tiny pea-like blossoms in a short terminal raceme, each less than 1/4-inch across; petals blue-to-purple with white center.
Bloom Period: February to May.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, "Wildflowers of the Texas Hill Country" by Marshall Enquist, "Vascular Plants of Williamson County" by A.C. Gibson abd www.americansouthwest.net.
Texas Status
Native

© Tom Lebsack 2019