Phacelia bipinnatifida Michaux. Phen: Mar-May; Jun. Hab: Cove forests, especially where rocky; also popular as a native plant for horticultural use, and sometimes found as a persistent or spreading from horticultural use. Dist: W. VA west to s. OH, n. IN, n. IL, and c. MO, south to w. NC, nw. SC, n. GA, c. AL, and n. AR.
Origin/Endemic status: Native
Taxonomy Comments: Phacelia bipinnatifida var. plummeri (= P. brevistyla) is "based on a variation with sparser pubescence, larger and less divided leaf segments, smaller flowers, and sub-included stamens and style. These variations are not concomitant, and the distribution of forms showing a complete or partial combination of them is sporadic" (Constance 1949). The matter deserves additional study.
Synonymy: = Ar, C, G, Il, K1, K3, K4, RAB, Tn, Va, W, Constance (1949); = n/a – Pa; > Phacelia bipinnatifida Michx. – S; > Phacelia bipinnatifida Michx. var. bipinnatifida – F; > Phacelia bipinnatifida Michx. var. plummeri Wood – F; > Phacelia brevistyla Buckley – S