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Lupinus species [Fabaceae]

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Scientific Name Lupinus havardii USDA PLANTS Symbol LUHA
Common Name Big Bend Bluebonnet, Chisos Bluebonnet ITIS Taxonomic Serial No. 26025
Family Fabaceae (Pea) Wildflower Center Ref. Click Here
Description Habitat: Gravelly soils in desert environments; hillsides, flats and roadsides.
Plant: Erect annual 2 to 4 feet tall, ascending branches with pubescent hairs appressed against the surfaces.
Leaves: Alternate leaves with 7 oblanceolate leaflets 1/3 to 3/4-inch long with pointed tips; upper surfaces smooth and lower with appressed pubescent hairs.
Inflorescence: Numerous flowers in raceme 7 to 18 inches long, each 5/8-inch long, 5 petals, blue to blue/purple, banner with white spot near base.
Bloom Period: January to May.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, "Wildflowers of Texas" by Geyata Ajilvsgi, and www.americansouthwest.net.
BONAP Distribution Map

Texas Status:
Native
Scientific Name Lupinus texensis USDA PLANTS Symbol LUTE
Common Name Texas Bluebonnet ITIS Taxonomic Serial No. 26133
Family Fabaceae (Pea) Wildflower Center Ref. Click Here
Description Habitat: Gravelly, sandy, usually calcareous soils; hillsides, pastures, brush; common along roadsides.
Plant: Erect, hairy annual 6 to 16 inches tall, branched from base, branches more or less decumbent.
Leaves: Alternate mostly basal leaves divided into 5 (rarely 7) oblanceolate leaflets each up to 1-inch long with pointed tips.
Inflorescence: Numerous flowers in raceme with a silvery-white tip, 6 or more inches long; each blossom 5/8-inch long, 5 petals, blue to blue/purple (sometimes white) banner with white spot near base, becoming reddish after pollination.
Bloom Period: February to May.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, "Wildflowers of Texas" by Geyata Ajilvsgi, and "Wildflowers of Texas" by Michael Eason, and "Wildflowers of the Texas Hill Country" by Marshall Enquist.
Note: Another species, L. subcarnosis, looks very similar but the inflorescence is shorter, less congested with blossoms, and the tip more rounded and less conspicuous; and the leaflets have rounded tips. It is distributed generally in the eastern and southern portions of the state.
BONAP Distribution Map

Texas Status:
Native

Click Here for white Bluebonnets.


© Tom Lebsack 2021