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Howell lousewort, Howell's lousewort, Howell's pedicularis

leafy lousewort, parrot's-beak, sickletop lousewort, white sickletop lousewort

Habit Plants 15–40 cm. Plants 0.5–15 cm.
Leaves

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 0;

cauline 8–25, blade linear or narrowly lanceolate, 10–80 x 3–15 mm, undivided, adjacent margins nonoverlapping, 1- or 2-serrate, surfaces glabrous.

Racemes

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.

simple, 1–4, each 3–25-flowered;

bracts lanceolate, 5–40 x 3–10 mm, undivided, proximal margins entire, distal 1- or 2-serrate, surfaces glabrous.

Pedicels

2.5–3 mm.

1–3.5 mm.

Flowers

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 4.5–7 mm, glabrous, lobes 2, triangular to deltate, 0.5–1 mm, apex entire, glabrous;

corolla 10–15 mm, tube white or light pink, 6–9 mm;

galea white or light pink, 4–6 mm, beaked, beak sickle-shaped, 5–8 mm, margins entire medially and distally, apex not extending beyond abaxial lip;

abaxial lip white or light pink, 4–5 mm.

2n

= 16.

Pedicularis howellii

Pedicularis racemosa

Phenology Flowering Jun–Aug.
Habitat Alpine forest clearings and edges.
Elevation 1100–2000.
Distribution
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CA; CO; ID; MT; NM; OR; UT; WA; WY; AB; BC
[WildflowerSearch map]
[BONAP county map]
Discussion

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.)

Subspecies 2 (2 in the flora).

Pedicularis racemosa occurs in the Rocky Mountains from southern Canada to New Mexico, in the Cascade Range from British Columbia to California, and in mountainous areas of Arizona.

Herbarium sheets of Pedicularis racemosa are sometimes misidentified as P. contorta or P. groenlandica, but the calyx has two lobes, not five as in the latter species. The uncoiled beak also bends downward from an undomed galea, which the large lateral lobes of the abaxial lip often conceal, whereas the coiled beaks of P. contorta and P. groenlandica are very noticeable.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
1. Corolla tubes light pink; cauline leaf blades narrowly elliptic-lanceolate, widest at middles.
subsp. racemosa
1. Corolla tubes white; cauline leaf blades linear to linear-lanceolate, widest near bases or at middles.
subsp. alba
Source FNA vol. 17, p. 523. FNA vol. 17, p. 530.
Parent taxa Orobanchaceae > Pedicularis Orobanchaceae > Pedicularis
Sibling taxa
P. angustifolia, P. attollens, P. aurantiaca, P. bracteosa, P. canadensis, P. capitata, P. centranthera, P. chamissonis, P. contorta, P. crenulata, P. cystopteridifolia, P. densiflora, P. dudleyi, P. flammea, P. furbishiae, P. groenlandica, P. hirsuta, P. labradorica, P. lanata, P. lanceolata, P. langsdorffii, P. lapponica, P. oederi, P. ornithorhyncha, P. ornithorhynchos, P. palustris, P. parryi, P. parviflora, P. pennellii, P. procera, P. pulchella, P. racemosa, P. rainierensis, P. semibarbata, P. sudetica, P. sylvatica, P. verticillata
P. angustifolia, P. attollens, P. aurantiaca, P. bracteosa, P. canadensis, P. capitata, P. centranthera, P. chamissonis, P. contorta, P. crenulata, P. cystopteridifolia, P. densiflora, P. dudleyi, P. flammea, P. furbishiae, P. groenlandica, P. hirsuta, P. howellii, P. labradorica, P. lanata, P. lanceolata, P. langsdorffii, P. lapponica, P. oederi, P. ornithorhyncha, P. ornithorhynchos, P. palustris, P. parryi, P. parviflora, P. pennellii, P. procera, P. pulchella, P. rainierensis, P. semibarbata, P. sudetica, P. sylvatica, P. verticillata
Subordinate taxa
P. racemosa subsp. alba, P. racemosa subsp. racemosa
Name authority A. Gray: Proc. Amer. Acad. Arts 20: 307. (1885) Douglas ex Bentham: in W. J. Hooker, Fl. Bor.-Amer. 2: 108. (1838)
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