Northern Prairie Wildlife Research Center


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Aquatic and Wetland Vascular Plants of the Northern Great Plains

45. Scrophulariaceae, the Figwort Family

8. Pedicularis L. -- Lousewort

1. Pedicularis canadensis L.

Plants loosely tufted with clustered stems 1-3 dm tall. Leaves basal and cauline, alternate, the basal and lower leaves longer-petioled and more prominent than the upper ones, the blades oblanceolate in outline, 3-6 cm long, 0.8-2.5 cm wide, rounded at the tip, pinnatifid with the lobes crenate-margined, divided more than halfway to the midrib, tapered to the petiole. Flowers sessile or subsessile, in dense spikes 2-15 cm long, the spike axis densely pubescent; bracts obovate to oblanceolate, deciduous; calyx very oblique, entire or nearly so, 6-9 mm long; corolla 17-25 mm long, the upper lip with 2 lateral teeth near the tip. Capsule oblong, ca. 2X the length of the calyx. Late May--Jun. Wet meadows and low prairie, often where sandy; e ND and e SD; (Que. and ME to Man., s to FL, TX, CO and into n Mex.).
GIF- Distribution Map

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