Determined by George Ferguson of U of A Herbarium
Sunset Trail 7/9/15
Wildflowers of Southern Arizona
Bean (Fabaceae) family.
2 to 9 flowers in loose clusters (racemes) arising from leaf axils in the upper part of the stem. Individual flowers are a typical shape for a member of the pea family, slightly elongated, ½ to ¾ inch long. Flower color ranges from pink to purple to blue. The calyx holding the flower is hairless to minutely hairy, with 5 broadly triangular lobes, the lower lobes up to twice as long as the short upper lobes, and all rather shorter than the calyx tube. Flower stalks are minutely hairy. Leaves are compound in groups of 4 to 8 pairs, with a tendril at the end of the leaf that winds around other plants for support. At the base of the stalk is a pair of leafy appendages (stipules) that are up to 1/3 inch long, sharply pointed at both ends, with (characteristically) 3 sharp teeth in the lower half. Leaflets are narrowly egg-shaped to elliptic and may have rounded, blunt or pointed tips. Each is up to 1½ inch long and about ¼ inch wide, toothless and hairless, becoming smaller towards the end of the leaf. Stems are angled, but otherwise smooth.
Santa Catalina Mountains.
Location: In damp area by dirt road off of Sunset Trail trailhead.
See SEINet Pictures and Description