Texas
Wildbuds

Senna bauhiniodes

(Twinleaf Senna)

_DSC1056%20copy

Senna bauhinioides, near Boquillas Canyon, Big Bend National Park 1371

_DSC1056%20copy

Senna bauhinioides, near Boquillas Canyon, Big Bend National Park 1360

_DSC1056%20copy

Senna bauhinioides, near Boquillas Canyon, Big Bend National Park 1365

_DSC1056%20copy

Senna bauhinioides, near Boquillas Canyon, Big Bend National Park 1370

_DSC1056%20copy

Senna bauhinioides, near Boquillas Canyon, Big Bend National Park 1368

Scientific Name Senna bauhinioides (Cassia bauhinioides) USDA PLANTS Symbol SEBA3
Common Name Twinleaf Senna ITIS Taxonomic Serial No. 505146
Family Fabaceae (Pea) SEINet
Reference
Click Here
Description Habitat: Dry, gravelly soils in flats and plains, along washes and on rocky slopes, from 2,000 to 5,500 ft.
Plant: Perennial with spreading or ascending stems, usually branched, up to 16 inches long; stems with gray, woolly hairs.
Leaves: Compound leaves with one pair of unsymmetrical oblong to ovate leaflets, 3/4 to 1-3/4 inches long and 3/8 to 1-1/4 inches wide on petioles about the same length as the leaflets; thin, erect, brownish gland between the leaflets; fine hairs on both leaflet surfaces.
Inflorescence: Clusters of 1 to 3 pale yellow flowers on peduncles arising from leaf axils and 3/4 to 1-5/8 inches long; drooping flowers about 1-1/4 inches across with 5 petals with obvious brownish veins; 10 light brown stamens, the upper 3 much shorter; hairy sepals about 1/4-inch long.
Bloom Period: April to August.
Fruit: Slightly curved pods 1-1/4 to 1-5/8 inches long and 1/4 to 1/3 inch wide, covered with fine hairs.
References: SEINet and Cassia bauhinioides in "Manual of the Vascular Plants of Texas" by Correll and Johnston.
Note: Very similar to S. durangensis with the main obvious differences being the leaf shape, the number of flowers per cluster and the shape of the pod. The images here are hopefully correctly identified.
BONAP Distribution Map

Map Color Key
Texas Status:
Native

Banner photo of Castilleja indivisa and Lupinus ssp. taken along FM 1323 north of Johnson City, Blanco County

© Tom Lebsack 2024