Lupinus havardii

The most common lupine in west Texas.

Inflorescences north of Study Butte on the way to Big Bend, 3/21/06.

Plant habit north of Study Butte, 3/21/06. The mountain in upper left is Wildhorse Mt.

Closer view of flowers north of Study Butte, 3/21/06.

An immature fruit north of Study Butte, 3/21/06.

Leaves, north of Study Butte, 3/21/06.

Plant habit in an alkaline wash on the Croton Spring Trail at Big Bend National Park, 15 Apr 2007.