Erigeron alpiniformis

Cronquist

Brittonia 6: 235. 1947.

Common names: Alpine fleabane
Treatment appears in FNA Volume 20. Treatment on page 326. Mentioned on page 266.

Perennials 2–20 cm; rhizomatous, fibrous-rooted, rhizomes or caudices sometimes branched. Stems erect, moderately villoso-hirsute (hairs sometimes retrorse), eglandular. Leaves basal (persistent) and cauline; basal blades oblanceolate to spatulate or subspatulate, 20–50 (–80) × 4–10 mm, margins entire, (apices rounded) faces moderately villoso-hirsute, eglandular; cauline broadly linear to narrowly lanceolate-oblong, gradually reduced distally. Heads 1 (–2, very rarely –4). Involucres 6–8 × 12–20 mm. Phyllaries in 2–3 series (somewhat foliaceous, usually green, faces sometimes purplish throughout or at tips), villous (usually mostly on proximal 1/2, hairs rigid, usually oriented in single direction, cross-walls sometimes colored), eglandular. Ray-florets 100–200; corollas white to pink-purple, 4–6 mm, laminae erect (filiform, 0.3–1 mm wide), not coiling or reflexing. Disc corollas 3.7–4.7 mm. Cypselae 1.5 mm (immature), 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 20–30 (nonaccrescent) bristles. 2n = 18.


Phenology: Flowering Jun–Aug.
Habitat: Rocky slopes and meadows
Elevation: ca. 1100–1800 m

Discussion

T. W. Böcher et al. (1968) identified this as Erigeron uniflorus in the strict sense and treated E. uniflorus var. eriocephalus as the distinct species E. eriocephalus. A. Cronquist (1947) viewed E. alpiniformis as distinct from both E. eriocephalus and E. borealis (Vierhapper) Simmons. The taxonomy of those plants needs to be reviewed in detail.

Selected References

None.

Lower Taxa

None.
... more about "Erigeron alpiniformis"
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 +
5 cm50 mm <br />0.05 m <br /> (8 cm80 mm <br />0.08 m <br />) +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
oblanceolate +  and spatulate or subspatulate +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
decurrent +
linear;lanceolate oblanceolate or spatulate +
rugulose +  and muricate +
broadly linear +  and narrowly lanceolate-oblong +
Alpine fleabane +
not 2-lipped +  and actinomorphic +
white +  and pink-purple +
0.4 cm4 mm <br />0.004 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 +
0.37 cm3.7 mm <br />0.0037 m <br /> (0.47 cm4.7 mm <br />0.0047 m <br />) +
fertile +  and bisexual +
Greenland +
ca. 1100–1800 m +
strigose +  and villoso-hirsute +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Rocky slopes and meadows +
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 +
1.2 cm12 mm <br />0.012 m <br /> (2 cm20 mm <br />0.02 m <br />) +
reflexing +  and erect +
not coiling +
petiolate +  and sessile +
cauline +  and basal +
erect;spreading +
deltate +
Not (?) +  and Scarious (?) +
2-carpellate +
Flowering Jun–Aug. +
narrowly elliptic +  and linear-lanceolate +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
prostrate +  and decumbent +
appendaged +  and truncate +
papillate +  and smooth +
Achaetogeron +  and Trimorpha +
Erigeron alpiniformis +
Erigeron +
species +
inflated +  and tubular +
fibrous-rooted +  and rhizomatous +
90 cm900 mm <br />0.9 m <br /> (100 cm1,000 mm <br />1 m <br />) +
2 cm20 mm <br />0.02 m <br /> (20 cm200 mm <br />0.2 m <br />) +
tree +, shrub +  and subshrub +