Rare & twisted

Draba streptobrachia, July 16, 2022

Common & scientific name
Alpine tundra draba, Draba streptobrachia

Family
Mustard, Brassicaceae

Location
Mountain Boy, 12,600’

Fun, weird, helpful, or little known fact
This uncommon Draba’s names, common and scientific, say it all: found only on high peaks, and sporting twisted siliques (seed pods): see photos below. To tell this Draba apart from the others: leaves and stem have variable, star-shaped, dendritic, and/or pectinate hair, fairly sessile (not long stalked), not usually dense (but this, too is variable). Its siliques are largely glabrous but with some hairs on the edges. It can have 1-3 leaves on its stems. The stem is (more) densely hairy (generally) than the leaves.