lupinus subcarnosus(n = noun.plant) bluebonnet, buffalo clover, texas bluebonnet - low-growing annual herb of southwestern United States (Texas) having silky foliage and blue flowers; a leading cause of livestock poisoning in the southwestern United States;
is a kind of lupin, lupine

genus lupinus, lupinus, lupinus albus, lupinus arboreus, lupinus luteus, lupinus perennis, lupinus texensis