Erigeron leiomerus

A. Gray in A. Gray et al.

in A. Gray et al., Syn. Fl. N. Amer. 1(2): 211. 1884.

Common names: Rockslide fleabane
IllustratedEndemic
Treatment appears in FNA Volume 20. Treatment on page 308. Mentioned on page 266, 272.

Perennials, 4–12 (–15) cm; taprooted (taproots often not evident or not collected), caudices with diffuse system of relatively long and slender, rhizomelike branches. Stems decumbent to ascending or erect (usually purplish proximally, sometimes greenish), glabrous or sparsely strigillose (hairs closely to loosely appressed), eglandular. Leaves basal and cauline; basal blades oblanceolate to obovate or spatulate, 15–70 × 2–11 (–15) mm, cauline reduced distally (bases of basal sometimes purplish, enlarged; of cauline, not subclasping), margins entire, faces glabrous or sparsely strigose, eglandular. Heads 1. Involucres 4–6 × 7–13 mm. Phyllaries in 2–3 series (often purplish, narrowly elliptic, erect, apices appressed), glabrous or sparsely strigose, minutely glandular. Ray-florets 15–60; corollas white to blue or purple, 6–11 mm, laminae reflexing. Disc corollas 3.2–4.4 mm. Cypselae 2–2.2 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 15–25 bristles. 2n = 18.


Phenology: Flowering Jun–Sep.
Habitat: Talus slopes, boulder fields, and other rocky or gravelly habitats, meadows, spruce, lodgepole pine, alpine tundra
Elevation: 2600–3800 m

Distribution

V20-668-distribution-map.gif

Colo., Idaho, Mont., Nev., N.Mex., Utah, Wyo.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Erigeron leiomerus"
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 +
A. Gray in A. Gray et al. +
1.1 cm11 mm <br />0.011 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (7 cm70 mm <br />0.07 m <br />) +
oblanceolate +  and obovate or spatulate +
0.2 cm2 mm <br />0.002 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
decurrent +
linear;lanceolate oblanceolate or spatulate +
rugulose +  and muricate +
slender +
Rockslide fleabane +
not 2-lipped +  and actinomorphic +
white +  and blue or purple +
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
subterete +, oblong +  and oblong-obovoid compressed +
fertile +  and bisexual +
0.32 cm3.2 mm <br />0.0032 m <br /> (0.44 cm4.4 mm <br />0.0044 m <br />) +
fertile +  and bisexual +
Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Utah +  and Wyo. +
2600–3800 m +
strigose +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Talus slopes, boulder fields, and other rocky or gravelly habitats, meadows, spruce, lodgepole pine, alpine tundra +
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 />) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
turbinate;hemispheric +
0.7 cm7 mm <br />0.007 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
petiolate +  and sessile +
cauline +  and basal +
erect;spreading +
deltate +
Not (?) +  and Scarious (?) +
2-carpellate +
Flowering Jun–Sep. +
3-nerved +  and 1-nerved +
strigose +  and glabrous +
narrowly elliptic +  and linear-lanceolate +
in A. Gray et al., Syn. Fl. N. Amer. +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
Illustrated +  and Endemic +
prostrate +  and decumbent +
decumbent +  and ascending or erect +
appendaged +  and truncate +
papillate +  and smooth +
Achaetogeron +  and Trimorpha +
Erigeron leiomerus +
Erigeron +
species +
inflated +  and tubular +
12 cm120 mm <br />0.12 m <br /> (15 cm150 mm <br />0.15 m <br />) +
4 cm40 mm <br />0.04 m <br /> (12 cm120 mm <br />0.12 m <br />) +
tree +, shrub +  and subshrub +