Erigeron canaani

S. L. Welsh

Great Basin Naturalist 43: 366. 1983.

Common names: Abajo fleabane
Endemic
Synonyms: Erigeron higginsii S. L. Welsh
Treatment appears in FNA Volume 20. Treatment on page 282. Mentioned on page 274, 280.

Perennials, (5–) 10–25 (–30) cm; taprooted, caudices simple or branched. Stems ascending to decumbent or nearly prostrate, sparsely strigose to glabrate, eglandular. Leaves basal (persistent, old leaf-bases persistent, chaffy, fibrous) and cauline; basal blades linear to narrowly linear-oblanceolate, 50–150 × 1–2 (–3) mm, cauline gradually or abruptly reduced distally, margins entire, faces glabrate to sparsely strigose, eglandular. Heads 1 (–3). Involucres 5–7 × 10–13 mm. Phyllaries in 2–3 (–4) series, hirsute, minutely glandular. Ray-florets 15–22; corollas white to purplish, 3.5–6 mm, laminae not coiling or reflexing. Disc corollas 3.5–5 mm. Cypselae 1.8–2.2 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of ca. 20 bristles.


Phenology: Flowering Apr–Jun(–Jul).
Habitat: Crevices of sandstone cliffs and in sandy soil, ponderosa pine, Gambel oak, maple, Douglas fir, mixed conifers
Elevation: 1600–2600 m

Discussion

Erigeron higginsii may prove to be a distinct entity. It was described as differing from E. canaani in having smaller involucres (4.5–5.5 × 7.5–11 mm) with fewer rays (7–12); it occurs at 2900–3120 m in the Pine Valley Mountains of southwestern Utah.

Selected References

None.

Lower Taxa

None.
... more about "Erigeron canaani"
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 +
S. L. Welsh +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
linear +  and narrowly linear-oblanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
decurrent +
linear;lanceolate oblanceolate or spatulate +
rugulose +  and muricate +
branched +  and simple +
Abajo fleabane +
not 2-lipped +  and actinomorphic +
white +  and purplish +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.6 cm6 mm <br />0.006 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 +
1600–2600 m +
strigose +, glabrate +  and sparsely strigose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Crevices of sandstone cliffs and in sandy soil, ponderosa pine, Gambel oak, maple, Douglas fir, mixed conifers +
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 />) +
0.5 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 /> (1.3 cm13 mm <br />0.013 m <br />) +
not coiling +
petiolate +  and sessile +
cauline +  and basal +
erect;spreading +
deltate +
Not (?) +  and Scarious (?) +
2-carpellate +
Flowering Apr–Jun(–Jul). +
3-nerved +  and 1-nerved +
narrowly elliptic +  and linear-lanceolate +
Great Basin Naturalist +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
prostrate +  and decumbent +
appendaged +  and truncate +
papillate +  and smooth +
Erigeron higginsii +
Erigeron canaani +
Erigeron +
species +
inflated +  and tubular +
25 cm250 mm <br />0.25 m <br /> (30 cm300 mm <br />0.3 m <br />) +
10 cm100 mm <br />0.1 m <br /> (25 cm250 mm <br />0.25 m <br />) +
tree +, shrub +  and subshrub +