Vascular Plants of the Gila Wilderness

Presented in Association with the
Western New Mexico University Department of Natural Sciences

Astragalus humistratus Gray var. humistratus
(Groundcover Milkvetch)


Family: Fabaceae

Status: Native

Synonyms:
Astragalus datilensis (Rydberg) Tidestrom
Batidophaca humistrata (Gray) Rydberg
Pisophaca datilensis Rydberg
Tium humistratum (Gray) Rydberg
Tragacantha humistrata (Gray) Kuntze

Astragalus humistratus var. humistratus is a prostrate, spreading plant with rather unusual yellowish green flowers that may have white, pink or purple highlights. The flowers are born in a dense capitate cluster. The pods are slightly curved, pubescent and have a persistent style. The pinnately compound leaves have more than seven leaflets and are glabrous on top in var. humistratus, but are pubescent on top in other varieties. The hairs of the herbage are dolabriform, meaning that they are attached to the stem and leaves somewhere besides at the ends of the hairs. Astragalus humistratus var. humistratus is found in flat, sandy areas at middle elevation.
Please click on an image for a larger file.



Astragalus humistratus var. humistratus, photo Russ Kleinman & Richard Felger, Pinos Altos Range, Allie Canyon near the Mimbres Valley, September 8, 2010



Astragalus humistratus var. humistratus, closeup of flower, photo Russ Kleinman & Richard Felger, Pinos Altos Range, Allie Canyon near the Mimbres Valley, September 8, 2010



Astragalus humistratus var. humistratus, closeup of pods, photo Russ Kleinman & Richard Felger, Pinos Altos Range, Allie Canyon near the Mimbres Valley, September 8, 2010



Astragalus humistratus var. humistratus, pod measured, photo Russ Kleinman & Richard Felger, Pinos Altos Range, Allie Canyon near the Mimbres Valley, September 8, 2010



Astragalus humistratus var. humistratus, leaf measured, photo Russ Kleinman & Richard Felger, Pinos Altos Range, Allie Canyon near the Mimbres Valley, September 8, 2010



Astragalus humistratus var. humistratus, flower measured, photo Russ Kleinman & Richard Felger, Pinos Altos Range, Allie Canyon near the Mimbres Valley, September 8, 2010


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