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Oeder's lousewort

pédiculaire flammée, red-tip lousewort, redrattle

Habit Plants 2–15 cm. Plants 1.5–20 cm.
Leaves

basal 2–10, blade lanceolate, 10–70 x 3–15 mm, 1-pinnatifid, margins of adjacent lobes nonoverlapping or extensively overlapping distally, 2-serrate, surfaces glabrous or slightly tomentose;

cauline 1–5, blade lanceolate, 15–50 x 3–20 mm, 1-pinnatifid, margins of adjacent lobes nonoverlapping or extensively overlapping distally, 1- or 2-serrate, surfaces glabrous or slightly tomentose.

basal 2–5, blade lanceolate, 5–25 x 2–6 mm, 1-pinnatifid, margins of adjacent lobes nonoverlapping or slightly overlapping distally, 2-serrate, surfaces glabrous;

cauline 3–6, blade lanceolate, 5–30 x 3–10 mm, 1-pinnatifid, margins of adjacent lobes nonoverlapping or slightly overlapping distally, 2-serrate, surfaces glabrous.

Racemes

simple, 1 or 2, exceeding basal leaves, each 10–50-flowered;

bracts linear to lanceolate, 5–20 x 1–2 mm, undivided or 1-pinnatifid, proximal margins entire, distal serrate, surfaces glabrous or tomentose.

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

bracts lanceolate, 10–15 x 1–2 mm, pinnatifid, proximal margins entire, distal 1- or 2-serrate, surfaces glabrous.

Pedicels

2–5 mm.

3–10 mm.

Flowers

calyx 8–11 mm, tomentose, lobes 5, triangular, 1–3 mm, apex entire or serrate, glabrous, sometimes ciliate;

corolla 15–24 mm, tube yellow, 9–15 mm;

galea bicolored, yellow proximally, brown or red distally, 6–9 mm, beakless, margins entire medially and distally, apex arching slightly over abaxial lip;

abaxial lip yellow, 4–5 mm.

calyx 4.5–7 mm, glabrous, lobes 5, triangular, 1.5–2.5 mm, apex entire, glabrous;

corolla 12–15 mm, tube yellow, 8–10 mm;

galea bicolored, yellow proximally, dark red to purple distally, 4–5 mm, beakless, margins entire medially and distally, apex arching slightly over abaxial lip;

abaxial lip yellow, 1.5–3 mm.

2n

= 16 (Asia).

= 16.

Pedicularis oederi

Pedicularis flammea

Phenology Flowering Jun–Aug. Flowering Jul.
Habitat Arctic and alpine tundras. Wet meadows, along streams, tundras, flood plains.
Elevation 500–3700 m. (1600–12100 ft.) 0–2500 m. (0–8200 ft.)
Distribution
from FNA
AK; MT; WY; AB; BC; NT; YT; Eurasia
[WildflowerSearch map]
[BONAP county map]
from FNA
AB; MB; NL; NT; NU; ON; QC; Greenland; Europe (Norway, Sweden); Asia; Atlantic Islands (Iceland)
[BONAP county map]
Discussion

Pedicularis oederi is known from the mountains of Europe, Asia, and western North America.

Two arctic species can be easily confused with Pedicularis oederi. Pedicularis flammea also has bicolored flowers that are yellow with galeas that are red- or purple-tipped, but the flowers of P. oederi are twice the size of those of P. flammea. The flowers of P. capitata are sometimes also yellow but may or may not be bicolored. If bicolored, the color is more diffuse and lighter than that of either P. flammea or P. oederi. The flowers of P. capitata are also larger than those of P. oederi. In addition, the inflorescences of P. capitata usually have no more than five flowers clustered at the tips, while those of P. oederi have at least 10 to 50 flowers along at least one third their lengths. H. J. Scoggan (1978–1979) listed P. oederi var. albertae based upon its densely woolly inflorescence.

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

Pedicularis flammea is often confused with P. oederi, which also has red- or purple-tipped galeas. Compared to other Pedicularis species, including P. oederi, flowers of P. flammea are much smaller.

Pedicularis flammea is a boreal-arctic species found only in northern parts of many Canadian provinces.

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

Source FNA vol. 17, p. 526. FNA vol. 17, p. 522.
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. 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. 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. oederi var. albertae
Name authority Vahl ex Hornemann: Fors. Oecon. Plantel. ed. 2, 580. (1806) Linnaeus: Sp. Pl. 2: 609. (1753)
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