Wildflowers of Southern Arizona
Sensitive Partridge Pea.
Bean (Fabaceae) family.
Duration: Annual. Nativity: Native. Lifeform: Subshrub. General: Slender stemmed annual to 50 cm tall, stems covered in dense hairs. Leaves: Alternate, pinnately compound leaves, each leaf divided into 10-25 narrow oblong leaflets with small spines on the tips; stalked gland on petiole, just below last pair of leaflets; leaves fold when disturbed. Flowers: Short axillary pedicels bearing irregular yellow flowers up to 1.4 cm wide, 5 petals, lower petal larger and more spreading. Fruits: Legume. Ecology: Found in open woods, prairies, thickets, and on wet shores; 3,500-5,000 ft (1067-1524 m). Distribution: Most of eastern US, from MI to ME, south to FL, west to AZ; south to s MEX, and in S. Amer.; Australia and Asia. Notes: With this species try touching the leaves which will gently reflex and close. Also distinct by being an erect annual with pinnately compound leaves with many leaflets; yellow flowers; the shape of the pods, being flat and having straight, almost parallel sides and an end which is mostly straight and slants back (see pics). Ethnobotany: Used medicinally for endurance and given against fainting spells. Etymology: Chamaecrista come from Greek chamae, dwarf and crista for cross..
Santa Catalina Mountains.
Location: Shoulder of campground road
See SEINet Pictures and Description