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Lupinus texensis
In the fall the bluebonnets emerge as small seedings with two cotyledons, and later a rosette of leaves that are palmately compound with 5-7 leaflets 3-6 cm long, green with a faint white edge and hair. Growth continues over the mild winter months and then in the spring will take off and rapidly grow larger before sending up a 20-40 cm tall plume of blue flowers (with bits of white and occasionally a tinge of pinkish-red).
This particular species is endemic to Texas. There are six species of bluebonnets in the Lupinus family.
Beautiful bluebonnet field in a state park; the Texas state flower
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