Premise: Camassia cusickii, common name Cussick's camas, is a species of plant in the Asparagaceae family (subfamily Agavoideae). It is native to parts of North America. It has linear leaves with parallel venation and flowers in parts of three. The flowers are usually ice blue or baby blue in color, although they can be various shades of blue, cream and white.
Hypothesis: Cussick's camas is the only plant in Asparagaceae to be native to North America