Phacelia heterophylla “Varileaf Scorpionweed” Hydrophyllaceae/Boraginaceae
Mt. Sentinel, Lolo National Forest, MT
June 13, 2016
Robert Niese
As I mentioned in my last post, I’m not very familiar with members of the genus Phacelia, but this species perfectly exemplifies why they have received the common name, “scorpionweeds.” Those tightly coiled flower heads will progressively unravel until they’re long and straight (a very Boraginaceaous growth pattern). P. heterophylla is an abundant, weedy species in our area, and, unlike elsewhere in its range where their flowers are drab and white, here in Missoula ours tend to be deep lavender in color!
Northwest Naturalist 