Pedicularis howellii
Pedicularis labradorica
Howell lousewort, Howell's lousewort, Howell's pedicularis
Labrador lousewort, pédiculaire du Labrador
basal 1–4, blade elliptic to lanceolate, 20–60 x 15–40 mm, undivided or 1-pinnatifid, margins of adjacent lobes nonoverlapping or slightly overlapping distally, serrate, surfaces glabrous;
cauline 10–12, blade ovate to lanceolate, 25–60 x 15–40 mm, undivided or 1-pinnatifid, sometimes auricled, margins of adjacent lobes nonoverlapping or slightly overlapping distally, entire or serrate to crenate, surfaces glabrous or scattered woolly along main vein.
basal 2 or 3, blade lanceolate, 10–20 x 2–3 mm, 1- or 2-pinnatifid, margins of adjacent lobes nonoverlapping, serrate, surfaces glabrous;
cauline 1–4, blade linear to lanceolate, 10–50 x 2–10 mm, undivided or 1- or 2-pinnatifid, margins of adjacent lobes nonoverlapping, serrate to 2-serrate, surfaces glabrous or sparsely downy to hispid.
simple, 1–8, exceeding basal leaves, each 15–40-flowered;
bracts trullate to cordate, 6–8 x 4–8 mm, undivided, proximal margins entire, distal entire, surfaces glabrous or tomentose.
paniculate or buds present in cauline leaf axils, 1–8, exceeding basal leaves, each 5–20-flowered;
bracts linear to narrowly lanceolate, 7–15 x 1–2 mm, undivided or 1-pinnatifid, proximal margins entire, distal 1- or 2-serrate, sometimes crenulate, surfaces glabrous or hispid.
2.5–3 mm.
0.5–2 mm.
calyx 6–6.5 mm, tomentose, lobes 5, triangular, 1.5–2 mm, apex entire, ciliate;
corolla 10–13 mm, tube white, 6–8 mm;
galea white, apically sometimes tinged with red to violet, 3.5–5 mm, beaked, beak straight, 1–2 mm, margins entire medially and distally, apex extending beyond abaxial lip;
abaxial lip white, 1.5–2 mm.
calyx 5–8 mm, glabrous, lobes 2, triangular, 0.5–1.5 mm, apex entire, sometimes slightly bifurcate, glabrous;
corolla 12–18 mm, tube deep yellow, 7–10 mm;
galea dark yellow or yellow tinged with purple or spotted, 5–9 mm, beakless, margins entire medially, 1-toothed distally, apex arching over abaxial lip;
abaxial lip dark yellow, 5–7 mm.
= 16.
Pedicularis howellii
Pedicularis labradorica
Pedicularis howellii is found in the Siskiyou Mountains along the California/Oregon border; it has undivided distal leaves. The division of the proximal leaves into irregular and asymmetric lobes, sometimes appearing auricled, is a unique feature of this species.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
The flowers of Pedicularis labradorica are usually yellow or dark yellow, and the galea is tinged distally with red or purple; sometimes, the yellow color of the tube abruptly transitions into red or purple. Hultén based var. sulphurea on the solid yellow color variant from the Yukon.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
BC
