Erigeron linearis

(Hooker) Piper

Contr. U.S. Natl. Herb. 11: 567. 1906.

Common names: Desert yellow fleabane
IllustratedEndemic
Basionym: Diplopappus linearis Hooker Fl. Bor.-Amer. 2: 21. 1834
Synonyms: Erigeron peucephyllus A. Gray
Treatment appears in FNA Volume 20. Treatment on page 299. Mentioned on page 265, 275.

Perennials, 5–15 (–20) cm; taprooted, caudices branched, woody. Stems erect to slightly basally ascending, sparsely strigose (hairs white), eglandular. Leaves mostly basal (persistent) or basal and cauline; basal blades linear to linear-oblanceolate, (15–) 30–70 (–90) × 0.5–3 mm, cauline (on proximal 1/3–2/3 of stems) slightly reduced (bases abruptly widened, thickened, white-indurate, sheathing stem) margins entire, faces loosely strigose, eglandular. Heads 1 (–3). Involucres 4–7 × 8–13 mm. Phyllaries in 2–3 (–4) series, strigose to villous, minutely glandular. Ray-florets 25–38; corollas usually bright-yellow, sometimes cream to nearly white, 4–8 mm, laminae weakly coiling. Disc corollas 3.5–5.3 mm. Cypselae 2–2.3 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 10–20 bristles. 2n = 18, 27, 36, 45.


Phenology: Flowering May–Jul(–Aug).
Habitat: Open rocky slopes, grassland, sagebrush, bitterbrush, juniper
Elevation: 700–2000(–3100) m

Distribution

V20-640-distribution-map.gif

B.C., Calif., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Erigeron linearis"
45 +, 36 +, 27 +  and 18 +
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 +
(Hooker) Piper +
7 cm70 mm <br />0.07 m <br /> (9 cm90 mm <br />0.09 m <br />) +
3 cm30 mm <br />0.03 m <br /> (7 cm70 mm <br />0.07 m <br />) +
linear +  and linear-oblanceolate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
decurrent +
Diplopappus linearis +
linear;lanceolate oblanceolate or spatulate +
rugulose +  and muricate +
Desert yellow fleabane +
not 2-lipped +  and actinomorphic +
cream +  and nearly white +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 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 /> (0.53 cm5.3 mm <br />0.0053 m <br />) +
fertile +  and bisexual +
B.C. +, Calif. +, Idaho +, Mont. +, Nev. +, Oreg. +, Utah +, Wash. +  and Wyo. +
700–2000(–3100) m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open rocky slopes, grassland, sagebrush, bitterbrush, juniper +
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 /> (0.7 cm7 mm <br />0.007 m <br />) +
turbinate;hemispheric +
0.8 cm8 mm <br />0.008 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
petiolate +  and sessile +
cauline +  and basal +
erect;spreading +
deltate +
reduced +
Not (?) +  and Scarious (?) +
2-carpellate +
Flowering May–Jul(–Aug). +
3-nerved +  and 1-nerved +
strigose +  and villous +
narrowly elliptic +  and linear-lanceolate +
Contr. U.S. Natl. Herb. +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
Illustrated +  and Endemic +
prostrate +  and decumbent +
erect +  and slightly basally ascending +
appendaged +  and truncate +
papillate +  and smooth +
Erigeron peucephyllus +
Erigeron linearis +
Erigeron +
species +
inflated +  and tubular +
15 cm150 mm <br />0.15 m <br /> (20 cm200 mm <br />0.2 m <br />) +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
tree +, shrub +  and subshrub +