Pedicularis procera
Pedicularis chamissonis
giant lousewort, Gray's lousewort
Chamisso's lousewort
basal 2–4, blade lanceolate, 150–250 x 80–120 mm, 2-pinnatifid, margins of adjacent lobes nonoverlapping, entire or serrate, surfaces glabrous or hirsute;
cauline 4–10, blade triangular to lanceolate, 60–300 x 5–90 mm, undivided or 1- or 2-pinnatifid, margins of adjacent lobes nonoverlapping, 2-serrate, surfaces glabrous.
basal 5–15, blade lanceolate, 15–40 x 10–20 mm, 2-pinnatifid, margins of adjacent lobes nonoverlapping or slightly overlapping distally, serrate, surfaces glabrous;
cauline whorled, whorls 1–4, leaves per whorl 3–5, blade lanceolate, 10–60 x 10–30 mm, 1- or 2-pinnatifid, margins of adjacent lobes nonoverlapping or slightly overlapping distally, entire or serrate, surfaces glabrous.
simple, sometimes paniculate, 1–3, exceeding basal leaves, each 10–50-flowered;
bracts linear or narrowly lanceolate to subulate, 15–80 x 3–8 mm, undivided, proximal margins entire, distal entire or serrate, surfaces hispid to tomentose.
verticillate, 1–3, exceeding basal leaves, each 8–20-flowered;
bracts lanceolate to subulate, 10–30 x 5–10 mm, 1-pinnatifid or undivided, margins serrate to 2-serrate, surfaces glabrous.
0–1 mm.
1.5–2.5 mm.
calyx 10–15 mm, hispid to hirsute, lobes 5, triangular, 4–7 mm, apex entire, ciliate;
corolla 22–30 mm, tube light yellow, greenish yellow, or light pink, 10–15 mm;
galea light yellow, greenish yellow, or light pink, with purple to red veins, 9–15 mm, beakless, margins entire medially, 1-toothed distally, apex arching over abaxial lip;
abaxial lip light yellow or light pink, with purple veins, 9–15 mm.
calyx 6–8 mm, glabrous, lobes 5, triangular, 0.5–1.4 mm, apex entire, ciliate;
corolla 18–20 mm, tube white to pink, 12–15 mm;
galea purple, 6–8 mm, beaked, beak straight, 1–3 mm, margins entire medially and distally, apex extending beyond abaxial lip;
abaxial lip pink or purple, 4–5 mm.
= 32.
Pedicularis procera
Pedicularis chamissonis
Although Pedicularis grayi A. Nelson appears in older floras, the name is superfluous and illegitimate. Pedicularis procera Adams ex Steven 1822 is invalid.
Pedicularis procera is the tallest species of Pedicularis in North America. Because the leaves closely resemble those of P. bracteosa, smaller plants can be easily mistaken for this species.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Pedicularis chamissonis differs from P. verticillata by having leaves and flowers about 1.5 times larger with a galea that is extended into a conical beak, leaves lanceolate versus elliptic, and lateral lobes of the abaxial lip more than twice the size and more pendulous.
Pedicularis chamissonis is chiefly an Asian species, found on the Kamchatka Peninsula, Kuril Islands, Sakhalin Island, and Japan; the only North American populations occur in the Aleutian Islands of Alaska.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
SW CO Wildflowers
WildflowerSearch
iNaturalist
USDA Plants Database
