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

Indian warrior

Habit Plants 15–40 cm. Plants 10–50 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 1–10, blade lanceolate, 30–200 x 20–70 mm, 2-pinnatifid, margins of adjacent lobes nonoverlapping or extensively overlapping distally, 1-serrate, surfaces glabrous, hispid, or downy, abaxial veins downy;

cauline 4–20, blade lanceolate, 15–250 x 5–100 mm, 2-pinnatifid, margins of adjacent lobes nonoverlapping or extensively overlapping distally, serrate, surfaces glabrous or hispid to downy.

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, 1–5, exceeding basal leaves, each 10–50-flowered;

bracts lanceolate, 10–35 x 3–5 mm, undivided to pinnatifid distally, proximal margins entire, surfaces glabrous.

Pedicels

2.5–3 mm.

2–4 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 12–24 mm, downy, lobes 5, narrowly triangular, 5.5–7.5 mm, apex entire, ciliate;

corolla 23–43 mm, tube dark red, purple, or orange-yellow, 9–17 mm;

galea dark red, purple, or orange-yellow, 14–26 mm, beakless, margins entire medially and distally, apex straight;

abaxial lip dark red, purple, or orange-yellow, 3–7 mm.

Pedicularis howellii

Pedicularis aurantiaca

Phenology Flowering Jun–Aug. Flowering Apr–Jun.
Habitat Alpine forest clearings and edges. Mixed coniferous forests.
Elevation 1100–2000. 600–2100 m. (2000–6900 ft.)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; OR
[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.)

Pedicularis aurantiaca is distinguished from P. densiflora by smaller abaxial lip lobes and longer calyces.

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

Source FNA vol. 17, p. 523. FNA vol. 17, p. 514.
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. 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. racemosa, P. rainierensis, P. semibarbata, P. sudetica, P. sylvatica, P. verticillata
Synonyms P. densiflora subsp. aurantiaca
Name authority A. Gray: Proc. Amer. Acad. Arts 20: 307. (1885) (E. F. Sprague) Monfils & Prather: Madroño 54: 311. (2008)
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