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giant lousewort, Gray's lousewort

lousewort, redrattle

Habit Plants 75–150 cm. Plants 3–10 cm.
Leaves

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 2–7, blade elliptic, 9–20 x 4–7 mm, 1- or 2-pinnatifid, margins of adjacent lobes nonoverlapping or slightly overlapping distally, dentate, surfaces glabrous;

cauline 2–6, blade elliptic to triangular, 5–16 x 1–5 mm, 1- or 2-pinnatifid, margins of adjacent lobes nonoverlapping or slightly overlapping, dentate, surfaces glabrous.

Racemes

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.

simple, 1–5, exceeding basal leaves, each 2–10-flowered;

bracts trullate to triangular, 3–15 x 6–11 mm, 2-pinnatifid, margins serrate, surfaces glabrous.

Pedicels

0–1 mm.

0.7–3 mm.

Flowers

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 9–14 mm, glabrous, lobes 5, triangular, 1.5–3.5 mm, apex pinnatifid, entire, glabrous;

corolla 24–30 mm, tube pink, 15–25 mm;

galea pink, 7–11 mm, beakless, margins entire medially, 1-toothed distally, apex arching slightly over abaxial lip;

abaxial lip pink, 5.5–9 mm.

2n

= 32.

= 16 (Europe).

Pedicularis procera

Pedicularis sylvatica

Phenology Flowering Jul–Aug. Flowering Jul–Aug.
Habitat Moist alpine meadows, aspen groves. Wet meadows.
Elevation 2400–4000 m. (7900–13100 ft.) 30–80 m. (100–300 ft.)
Distribution
from FNA
AZ; CO; NM; SD; UT; WY
[WildflowerSearch map]
[BONAP county map]
from FNA
NF; Europe [Introduced in North America]
[BONAP county map]
Discussion

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 sylvatica is considered by L. Brouillet et al. (http://data.canadensys.net/vascan/) to be introduced in the flora area.

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

Source FNA vol. 17, p. 529. FNA vol. 17, p. 534.
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. 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. 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. racemosa, P. rainierensis, P. semibarbata, P. sudetica, P. verticillata
Name authority A. Gray: Amer. J. Sci. Arts, ser. 2, 34: 251. (1862) Linnaeus: Sp. Pl. 2: 607. (1753)
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