Pedicularis verticillata |
Pedicularis lanceolata |
|
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whorled lousewort |
swamp lousewort |
|
Habit | Plants 5–25 cm. | Plants 20–100 cm. |
Leaves | basal 5–25, blade elliptic, 10–20 x 3–8 mm, 1- or 2-pinnatifid, margins of adjacent lobes nonoverlapping or slightly overlapping distally, serrate, surfaces glabrous or tomentose; cauline whorled, whorls 1 or 2, leaves per whorl 3–5, blade lanceolate, 5–30 x 3–10 mm, 1- or 2-pinnatifid, margins of adjacent lobes nonoverlapping or slightly overlapping, serrate, surfaces glabrous. |
basal 0; cauline 10–30, blade lanceolate, 20–100 x 10–30 mm, 1-pinnatifid, margins of adjacent lobes nonoverlapping, 2-serrate, surfaces hispid. |
Racemes | verticillate, 1–10, exceeding basal leaves, each 10–40-flowered; bracts lanceolate to trullate, 4–20 x 2–5 mm, undivided or 1- or 2-pinnatifid, margins serrate, surfaces glabrous or sparsely tomentose. |
paniculate, 1, each 10–20-flowered; bracts lanceolate to trullate, 5–10 x 3–5 mm, undivided or 1-pinnatifid and 1- or 2-auricled, proximal margins entire, distal 1- or 2-serrate, surfaces glabrous or hispid. |
Pedicels | 0.7–2.5 mm. |
1–1.5 mm. |
Flowers | calyx 3.5–10 mm, glabrous or pilose, lobes 5, deltate, 0.3–1 mm, apex entire, glabrous or ciliate; corolla 10–18 mm, tube light or dark pink, 5–8 mm; galea light or dark pink or purple, 5–7 mm, beakless, margins entire medially and distally, apex arching slightly over abaxial lip; abaxial lip light pink with purple veins and/or purple spots or purple with dark veins, 5–7 mm. |
calyx 7–12 mm, glabrous or hispid, lobes 2, trullate, ovate, elliptic, or triangular, 2.5–3.5 mm, apex serrate, glabrous, sometimes ciliate; corolla 16–22 mm, tube white, cream, or light yellow, 8–12 mm; galea white, cream, or light yellow, 8–12 mm, beaked, beak straight, 0.5–2.5 mm, margins entire medially and distally, apex extending over abaxial lip; abaxial lip white, cream, or light yellow, 7–10 mm. |
2n | = 12. |
= 16. |
Pedicularis verticillata |
Pedicularis lanceolata |
|
Phenology | Flowering Jun–Sep. | Flowering Aug–Oct. |
Habitat | Arctic meadows and thickets, muskegs, arctic and alpine tundras. | Wet meadows, fens, springs, moist prairies, swamps. |
Elevation | 0–1800 m. (0–5900 ft.) | 10–1100 m. (0–3600 ft.) |
Distribution |
AK; BC; NT; YT; Europe; Asia |
AR; CT; DE; GA; IA; IL; IN; KY; MA; MD; MI; MN; MO; NC; ND; NE; NJ; NY; OH; PA; SD; TN; VA; WI; WV; MB; ON
|
Discussion | In the flora area, Pedicularis verticillata and P. chamissonis are the only species of Pedicularis with whorled leaves. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
The long corolla tubes of Pedicularis lanceolata are uncharacteristically nectarless, and only late season pollen-foraging worker bumblebees pollinate this species (L. W. Macior 1969). The uniquely hinged abaxial lip covering the opening of the galea is an adaptation to allow only worker bumblebees access to the anthers, as they must learn to push it aside during foraging. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 534. | FNA vol. 17, p. 525. |
Parent taxa | Orobanchaceae > Pedicularis | Orobanchaceae > Pedicularis |
Sibling taxa | ||
Synonyms | Pediculariopsis verticillata | |
Name authority | Linnaeus: Sp. Pl. 2: 608. (1753) | Michaux: Fl. Bor.-Amer. 2: 18. (1803) |
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