Erigeron pallens

Cronquist

Brittonia 6: 240. 1947.

Common names: Pale fleabane
Endemic
Treatment appears in FNA Volume 20. Treatment on page 303. Mentioned on page 265.

Perennials, 2–6 (–10) cm; taprooted, caudices diffuse with extensive systems of rhizomelike, relatively long and slender branches. Stems erect (simple, ± scapiform), sparsely hirsuto-villous, minutely glandular. Leaves mostly basal (persistent); blades oblanceolate to spatulate, 10–25 × 2–4 mm, margins entire or shallowly 3-lobed apically (apices obtuse to nearly truncate), faces sparsely villous, minutely glandular. Heads 1. Involucres 6–8 × 9–13 mm. Phyllaries in 2–3 series (commonly purplish or purple at tips), sparsely villous (hairs often becoming tawny, without purple cross-walls), minutely glandular. Ray-florets 50–60; corollas white to pink or purplish, 4–5 (–6) mm, laminae (filiform, ca. 0.5–0.8 mm wide, involute) erect, not coiling or reflexing. Disc corollas 3.5–5 mm. Cypselae (mature length not observed), 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 25–30 (tawny-white to yellowish) bristles. 2n = 18.


Phenology: Flowering Jul–Aug.
Habitat: Alpine talus or other steep, dry, sparsely vegetated slopes
Elevation: 2000–2200 m

Discussion

Erigeron pallens is known only from southeastern British Columbia and southwestern Alberta. Arctic plants previously identified as E. pallens mostly are E. denalii.

Selected References

None.

Lower Taxa

None.
... more about "Erigeron pallens"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
paniculiform +, corymbiform +  and loose +
indeterminate +  and determinate +
Guy L. Nesom +
Cronquist +
decurrent +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
oblanceolate;spatulate +
2mm;4mm +
rugulose +  and muricate +
Pale fleabane +
not 2-lipped +  and actinomorphic +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
white +  and pink or purplish +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
subterete +, oblong +  and oblong-obovoid compressed +
fertile +  and bisexual +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
fertile +  and bisexual +
Alta. +  and B.C. +
2000–2200 m +
strigose +  and villous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Alpine talus or other steep, dry, sparsely vegetated slopes +
disciform +  and discoid +
in loose , corymbiform or paniculiform arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
turbinate;hemispheric +
0.9 cm9 mm <br />0.009 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
reflexing +  and erect +
not coiling +
petiolate +  and sessile +
erect;spreading +
deltate +
more or less dentate to pinnatifid +  and entire +
3-lobed +  and entire +
Not (?) +  and Scarious (?) +
2-carpellate +
Flowering Jul–Aug. +
3-nerved +  and 1-nerved +
narrowly elliptic +  and linear-lanceolate +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
branched +  and simple +
prostrate +  and decumbent +
appendaged +  and truncate +
papillate +  and smooth +
Achaetogeron +  and Trimorpha +
extensive +
Erigeron pallens +
Erigeron +
species +
inflated +  and tubular +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
tree +, shrub +  and subshrub +