Pedicularis canadensis L.
Family - Scrophulariaceae
Stems - To +25cm tall, from thick roots, multiple from base, herbaceous, hollow, reddish, erect, villous.
Leaves - Alternate, petiolate, pinnatifid to bipinnatifid, ultimate divisions crenate. Blade to +7cm long, 2.5-3cm broad, oblong, typically glabrous but with appressed hairs on sunken midrib above. Petioles to +3cm long, with sparse cilia on margins. Larger leaves basal, upper leaves reduced.
Inflorescence - Terminal spicate raceme to +/-9cm long. Axis of raceme dense villous to lanate. Flowers sessile, each subtended by foliaceous bract.
Flowers - Corolla bilabiate, yellowish, to 2.5cm long. Upper lip galeate, 1.2cm long. Lower lip bearded internally, to 1cm long. Stamens 4, didynamous. Filaments flattened, 2.3cm long, pubescent at base and at apex. Anthers 3mm long, 1.5mm broad. Ovary 4mm long, superior, glabrous, flattened at apex. Calyx to +/-1.4cm total length, 8mm in diameter. Capsule to +1.5cm long, with minute beak.
Flowering - April - May.
Habitat - Dry open woods, ridges, slopes, prairies, low meadows.
Origin - Native to U.S.
Other info. - P. canadensis
is a common plant in the state. The yellow flowers are easy to spot in
meadows in the spring. Steyermark lists a white flowered form also, f.
albescens Steyerm., but it is rare.
Photographs taken in the Mark Twain National Forest, Ripley County, MO., 4-15-01.