Pennsylvania Pellitory - Parietaria pensylvanica
MNPS Threat Rank
Annual with sparsely short-hairy foliage. Stems simple to branched, 5–30 cm. Leaves alternate; the blades 5–40 mm long, narrowly elliptic with entire margins. Flowers male and female mixed in axillary clusters subtended by linear bracts 2–5 mm long; female flowers with a tufted stigma. Achenes smooth, shiny, ca. 1 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
Scattered across much of MT but infrequent along Hi Line; YK, MB, ON and QC, southwest Canada through most of U.S. to Mexico (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX; Boufford 1997 in Fl. N. Amer. Vol. 3).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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Shaded, often disturbed soil of open forest, stream banks, beneath shrubs or rocks, occasionally epiphytic in humus of deciduous tree crotches; plains, valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
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- Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.