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Lupinus texensis Hook.

Kingdom: Plantae Rank: Species Parent: Lupinus Status: Invalid Reason: unverified

Common Names:

  • TEXAS BLUEBONNET - English, United States of America
  • BUFFALO-CLOVER - English, United States of America
  • TEXAS LUPINE - English, United States of America

Morphological Description

Diagnosis: Winter annual to 60 cm tall; stems pilose with appressed or ascending hairs; leaves long-petioled, palmately compound; leaflets 4– 7, lanceolate or oblancolate, glabrous above or nearly so, obtuse to acute or abruptly shortpointed apically; flowers in erect, terminal racemes, the white, pointed or acute raceme tips conspicuous from a distance (due to incompletely expanded and silvery-white hairy buds); calyces 6–8 mm long; petals deep blue (rarely white); standard with white center (changing to magenta red) bearing yellow-green dots; wing petals not inflated, nearly straight when viewed from front; fruits conspicuously hairy, ca. 2.5–4.2 cm long.


Ecology: This species is endemic to the state of Texas.

Notes: One of the six Lupinus species which are the state flowers of Texas.

Rocky limestone soils, clay; sc to nc TX mainly on the Blackland and Grand prairies and Edwards Plateau; now widely cultivated and planted along highways in much of TX and adjacent OK; endemic to TX (can now be found in s OK). Apr–May. Apparently unpalatable to cattle. (texensis: of Texas)