Pedicularis cystopteridifolia

Rydberg

Mem. New York Bot. Gard. 1: 365. 1900.

Common names: Fern-leaved lousewort
Endemic
Treatment appears in FNA Volume 17. Treatment on page 521. Mentioned on page 513, 534.

Plants 10–50 cm. Leaves: basal 2–10, blade elliptic to lanceolate, 20–90 x 5–15 mm, 2 (or 3) -pinnatifid, margins of adjacent lobes nonoverlapping to extensively overlapping distally, serrate, surfaces glabrous; cauline 2–8, blade triangular to lanceolate, 20–120 x 5–20 mm, 1-pinnatifid or 2-pinnatifid, margins of adjacent lobes nonoverlapping or extensively overlapping distally, serrate, surfaces glabrous or unevenly hispid to tomentose. Racemes simple, 1–2, exceeding basal leaves, each 10–40-flowered; bracts trullate to obtrullate or subulate to trullate, 10–25 x 2–5 mm, undivided or 1-auricled or 2-auricled, sometimes 1-pinnatifid, proximal margins entire, distal entire or serrate, surfaces tomentose. Pedicels 1–3 mm. Flowers: calyx 8–12 mm, tomentose, lobes 5, narrowly triangular, 3–4 mm, apex entire, ciliate; corolla 20–26 mm, tube red or pink, 13–15 mm; galea red or pink, 7–11 mm, beakless, margins entire medially, 1-toothed distally, apex arching over abaxial lip; abaxial lip red or pink, 6–7.5 mm. 2n = 32.


Phenology: Flowering May–Aug.
Habitat: Rocky alpine tundras, meadows.
Elevation: 2100–3100 m.

Discussion

Pedicularis cystopteridifolia occurs only in the Rocky Mountains of Montana and Wyoming. As the specific epithet implies, the leaves strongly resemble those of the fern Cystopteris fragilis. Although not sympatric, this species could easily be misidentified as P. sudetica subsp. scopulorum, which has flowers of a similar shape and color, and leaves that are also two-pinnatifid. The secondary leaf lobes of P. cystopteridifolia, however, are much larger, longer, more deeply incised, and more heavily toothed, making them appear more finely dissected than the linear to deltate secondary and smaller toothed lobes of P. sudetica. Many of the adjacent leaf lobes of P. cystopteridifolia also overlap, whereas the lobes of P. sudetica are more widely spaced and therefore not overlapping. The galea of P. cystopteridifolia is also more highly domed and broader, and the leaves are a paler shade of green in contrast to the dark green leaves of P. sudetica subsp. scopulorum.

Selected References

None.

Lower Taxa

None.

pink +  and red +
0.6 cm6 mm <br />0.006 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
beakless +  and beaked +
Bruce W. Robart +
Rydberg +
2 cm20 mm <br />0.02 m <br /> (12 cm120 mm <br />0.12 m <br />) +
2-pinnatifid;1-pinnatifid;triangular;lanceolate +
not leathery +  and not fleshy +
5mm;20mm +
2-auricled +, 1-auricled +  and undivided +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
1-pinnatifid +, trullate +  and obtrullate or subulate +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
tubular +, campanulate +  and symmetric +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
fleshy +  and woody +
whorled +  and alternate +
Fern-leaved lousewort +
white +, yellow +, red +, purple +  and pink +
2 cm20 mm <br />0.02 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
Mont. +  and Wyo. +
2100–3100 m. +
hairy +  and glabrous +
2 +  and 1 +
indehiscent +, septicidal +, loculicidal +  and dehiscence +
pink +  and red +
0.7 cm7 mm <br />0.007 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Rocky alpine tundras, meadows. +
axillary +  and terminal +
spiral +, whorled +, alternate +  and opposite +
deciduous +
basal +  and cauline +
triangular +
entire +  and serrate +
overlapping +, nonoverlapping +  and extensively overlapping +
1-toothed +
tenuinucellate +  and unitegmic +
campylotropous-like +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Flowering May–Aug. +
Mem. New York Bot. Gard. +
10-40-flowered;simple +
5 +  and 100 +
5 +  and 2 +
subequal +
aerial +  and subterranean +
Woolly (?) +, Villous (?) +, Hispid (?) +  and Glabrous (?) +
tomentose;unevenly hispid;tomentose +
Elephantella +  and Pediculariopsis +
Pedicularis cystopteridifolia +
Pedicularis +
species +
1.3 cm13 mm <br />0.013 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +