Senna species [Fabaceae]

Click on the images below to see larger versions.

Scientific Name Senna lindheimeriana (Cassia lindheimeriana) USDA PLANTS Symbol SELI4
Common Name Velvet-leaf Senna ITIS Taxonomic Serial No. 505159
Family Fabaceae (Pea) SEINet
Reference
Click Here
Description Habitat: Dry, calcareous soils.
Plant: Bushy perennial with 1 to several stems covered with fine hairs; 3 to 6 feet high.
Leaves: Alternate, pinnately-compound leaves 5 inches long with 5 to 8 pairs of oblong to elliptic, sometimes pointed, leaflets, each 1 to 2 inches long, both sides covered with soft hairs.
Inflorescence: Golden-yellow flowers 1-1/2 inch wide borne in terminal racemes arising from leaf axils; 5 elliptic petals with obvious veins; stamens straw-colored to light brown to reddish.
Bloom Period: August to October.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, "Wildflowers of Texas" by Geyata Ajilvsgi and Click Here.
BONAP Distribution Map

Texas Status:
Native
Scientific Name Senna pilosior (Cassia pilosior) USDA PLANTS Symbol SEPI3
Common Name Trans-Pecos Senna ITIS Taxonomic Serial No. 505169
Family Fabaceae (Pea) SEINet
Reference
Click Here
Description Habitat: Desert habitat, gravelly soil; in the US, found only in Big Bend.
Plant: Low-growing perennial, less than one-foot tall; stems covered with fine hairs.
Leaves: Compound leaves with a pair of oblong, nearly round leaflets, up to one-inch long; fine hairs on both surfaces.
Inflorescence: Drooping yellow flowers, 5 petals with obvious brownish veins, light brown stamens.
Bloom Period: Apparently moisture-dependent; photos below taken in April and December.
References: "Little Big Bend" by Roy Morey.
BONAP Distribution Map

Texas Status:
Native
Scientific Name Senna roemeriana USDA PLANTS Symbol SERO8
Common Name Two-leaf Senna ITIS Taxonomic Serial No. 505174
Family Fabaceae (Pea) SEINet
Reference
Click Here
Description Habitat: Dry, calcareous or clay soils; hillsides, prairies, open areas.
Plant: Erect/ascending perennial with a few to many pubescent-hairy stems 1 to 2 feet high.
Leaves: Alternate, compound leaves on petioles up to 1 inch long, with one pair of lanceolate or lance-linear, leaflets, each 1-1/4 to 2-3/8 inches long and up to 1/2-inch wide, both sides covered with soft hairs.
Inflorescence: Two to six golden-yellow flowers 1-1/8 inch or more wide borne in terminal racemes arising from leaf axils; 5 elliptic petals with obvious brownish veins; stamens straw-colored to light brown.
Bloom Period: April to September.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, "Wildflowers of Texas" by Geyata Ajilvsgi and "Wildflowers of the Texas Hill Country" by Marshall Enquist.
BONAP Distribution Map

Texas Status:
Native

© Tom Lebsack 2019