Erigeron pulcherrimus

A. Heller

Bull. Torrey Bot. Club 25: 200, plate 340. 1898.

Common names: Basin fleabane
Endemic
Synonyms: Erigeron bistiensis G. L. Nesom & Hevron Erigeron pulcherrimus var. wyomingia (Rydberg) Cronquist
Treatment appears in FNA Volume 20. Treatment on page 296. Mentioned on page 276.

Perennials, (5–) 7–30 (–35) cm; taprooted, caudex branches relatively short and thick. Stems erect (gray-green), moderately to densely gray-green-strigose (hairs white, stiff), eglandular. Leaves basal (persistent) and cauline (gray-green; petiole bases broadened or not, not thickened and whitish-indurate); basal blades linear to narrowly oblanceolate, 10–70 × 1–3 (–5) mm, cauline little reduced for about 1/2–3/4 stems, margins entire, faces moderately to densely strigose (hairs white, stiff), eglandular. Heads 1. Involucres 5–7 (–9) × 10–16 (–20) mm. Phyllaries in 2–3 (–4) series, hirsute to villoso-hirsute, minutely glandular. Ray-florets 25–60; corollas white to pink or bluish, 8–15 mm, laminae coiling. Disc corollas 3.8–5.7 mm. Cypselae 2.5–3 mm, (2–) 4 (–5) -nerved, faces densely strigoso-sericeous; pappi: outer sometimes of setae or bristles (to 0.5 lengths of inner), inner of 32–50 bristles.


Phenology: Flowering May–Jun.
Habitat: Clays, clay-silts, and gravelly soils, saline, gypseous, and seleniferous, commonly in salt desert scrub, pinyon-juniper
Elevation: 1300–2100 m

Distribution

V20-628-distribution-map.gif

Ariz., Colo., N.Mex., Utah, Wyo.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Erigeron pulcherrimus"
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. Heller +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1 cm10 mm <br />0.01 m <br /> (7 cm70 mm <br />0.07 m <br />) +
linear +  and narrowly oblanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
decurrent +
linear;lanceolate oblanceolate or spatulate +
rugulose +  and muricate +
Basin fleabane +
not 2-lipped +  and actinomorphic +
white +  and pink or bluish +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
(2-)4(-5)-nerved +
beaked +, 2-ribbed +  and 5-ribbed +
subterete +, oblong +  and oblong-obovoid compressed +
fertile +  and bisexual +
0.38 cm3.8 mm <br />0.0038 m <br /> (0.57 cm5.7 mm <br />0.0057 m <br />) +
fertile +  and bisexual +
Ariz. +, Colo. +, N.Mex. +, Utah +  and Wyo. +
1300–2100 m +
strigoso-sericeous +  and strigose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Clays, clay-silts, and gravelly soils, saline, gypseous, and seleniferous, commonly in salt desert scrub, pinyon-juniper +
disciform +  and discoid +
in loose , corymbiform or paniculiform arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
1.6 cm16 mm <br />0.016 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
turbinate;hemispheric +
1 cm10 mm <br />0.01 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
petiolate +  and sessile +
cauline +  and basal +
erect;spreading +
deltate +
not +  and scarious +
2-carpellate +
Flowering May–Jun. +
3-nerved +  and 1-nerved +
hirsute +  and villoso-hirsute +
narrowly elliptic +  and linear-lanceolate +
Bull. Torrey Bot. Club +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
prostrate +  and decumbent +
gray-green-strigose +
1/2 +  and 3/4 +
appendaged +  and truncate +
papillate +  and smooth +
Erigeron bistiensis +  and Erigeron pulcherrimus var. wyomingia +
Erigeron pulcherrimus +
Erigeron +
species +
inflated +  and tubular +
30 cm300 mm <br />0.3 m <br /> (35 cm350 mm <br />0.35 m <br />) +
7 cm70 mm <br />0.07 m <br /> (30 cm300 mm <br />0.3 m <br />) +
tree +, shrub +  and subshrub +