Coefficient of Conservatism:
Coefficient of Wetness:
B. S. Walters
Ranges mostly to the south and barely enters Michigan, where it is very rare and local in fens and similar wet habitats.
The stems are often sparsely puberulent even below the middle. The flowers are usually purple in an elongate ± cylindrical inflorescence.
One additional species, P. glaberrima L., with glabrous calyx and stem and obscure lateral veins (at best) occurs adjacent to Michigan in northern Indiana and might be discovered as far north as our southernmost counties (see Swink & Wilhelm 1994). It has 8 or more pairs of leaves below the inflorescence, but differs from P. maculata in having an unspotted stem and a broad corymbose inflorescence.