Pedicularis centranthera
Pedicularis canadensis
dwarf lousewort, Great Basin lousewort
beefsteak plant, Canadian lousewort, forest lousewort, pédiculaire du Canada, wood betony
basal 6–8, blade elliptic or spatulate, 35–120 x 10–30 mm, undivided or 1- or 2-pinnatifid, margins of adjacent lobes nonoverlapping or extensively overlapping distally, entire or 1- or 2-serrate, surfaces glabrous or scattered abaxial glands;
cauline 0–4, blade elliptic, sometimes lanceolate, 20–110 x 5–30 mm, 1- or 2-pinnatifid, margins of adjacent lobes overlapping distally, 1- or 2-serrate, surfaces glabrous.
basal 2–20, blade lanceolate, 15–100 x 3–40 mm, 1- or 2-pinnatifid, margins of adjacent lobes nonoverlapping or slightly overlapping distally, 1- or 2-serrate, surfaces glabrous or hispid;
cauline 1–10, blade lanceolate, 10–70 x 5–20 mm, 1-pinnatifid, margins of adjacent lobes nonoverlapping or slightly overlapping distally, 1- or 2-serrate, surfaces glabrous or hispid.
simple, 1–4, not exceeding basal leaves, each 8–14-flowered;
bracts spatulate, 40–60 x 3–6 mm, undivided proximally, undivided or 1-pinnatifid distally, proximal margins entire, distal 1- or 2-serrate, surfaces glabrous, sometimes arachnoid along main veins.
simple, 1–5, exceeding basal leaves, each 10–40-flowered;
bracts lanceolate, ovate, spatulate, or trullate, 5–40 x 1–10 mm, undivided proximally, undivided to 1-pinnatifid distally, proximal margins entire, distal 1- or 2-serrate, sometimes crenate, surfaces glabrous or hispid to tomentose.
1–5 mm.
1.5–2 mm.
calyx 17–22 mm, glabrous, lobes 5, narrowly triangular, 4–7 mm, apex entire or serrate, glabrous or ciliate;
corolla 28–40 mm, tube white or pale purple, 15–30 mm;
galea white or pale purple, apically sometimes dark violet to purple, 13–15 mm, beakless, margins entire medially and distally, apex arching over abaxial lip;
abaxial lip purple, 1–4 mm.
calyx 7–12 mm, glabrous, hispid, or tomentose, lobes 2, triangular, 0.5–2 mm, apex entire, glabrous or ciliate;
corolla 18–25 mm, tube yellow, 8–15 mm;
galea yellow, yellow with red veins, or red, sometimes purple, 10–14 mm, beakless, margins entire medially, 1-toothed distally, apex arching over abaxial lip;
abaxial lip expanded, yellow or white, 6–7 mm.
= 16.
Pedicularis centranthera
Pedicularis canadensis
Varieties 2 (2 in the flora).
The leaves of Pedicularis centranthera exceed the inflorescence, giving the impression that the cauline leaves are basal. Proximalmost basal leaves are distinct: brown, membranous, and spatulate with undivided and entire margins. Pedicularis semibarbata has similar basal leaves.
Pedicularis centranthera occurs in evergreen forests, often under pinyon pine, juniper, ponderosa pine, and yellow pine.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Pedicularis canadensis is chiefly of the Midwestern prairies; in eastern states and provinces, it grows in forest openings and along forest edges. It also inhabits alpine wet meadows at higher elevations along the Front Range of the Rocky Mountains. Corollas may be yellow, yellow with red veins, red (forma praeclara A. H. Moore), or bicolored with a yellow corolla tube, yellow abaxial lip, and red galea (forma bicolor Farwell).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Bracts arachnoid and/or margins ciliate. | var. centranthera |
1. Bracts glabrous. | var. exulans |
CA
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