Erigeron yukonensis

Rydberg

Bull. New York Bot. Gard. 2: 185. 1901.

Common names: Yukon fleabane
Endemic
Synonyms: Erigeron glabellus var. yukonensis (Rydberg) Hultén
Treatment appears in FNA Volume 20. Treatment on page 325. Mentioned on page 266.
Revision as of 21:10, 29 July 2020 by imported>Volume Importer
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Perennials, 10–30 (–40) cm; rhizomatous, fibrous-rooted, caudices or rhizomes sometimes resembling taproots, multicipital. Stems erect (often purplish proximally), sparsely to moderately hirsute to villoso-hirsute, eglandular. Leaves basal (persistent) and cauline; proximal blades narrowly oblanceolate, rarely oblanceolate-obovate, (10–) 40–160 × 2–8 mm, mid and distal narrowly lanceolate, reduced, margins entire, faces sparsely hirsute or glabrous, eglandular. Heads 1–2 (–4) (from branches at midstem). Involucres 6–10 × 12–19 mm. Phyllaries in 2 (–3) series (linear-lanceolate, apices linear-acuminate), sparsely to moderately woolly-villous (hairs whitish, flattened, with clear cross-walls), sometimes sparsely minutely glandular. Ray-florets 42–82; corollas white to pink or pink-purple, 10–15 mm (mostly 1–2 mm wide), laminae coiling. Disc corollas 3.8–5.2 mm. Cypselae 1.7–2 mm, 2-nerved, faces strigose; pappi: outer of setae or scales, inner of 15–20 bristles.


Phenology: Flowering (Jun–)Jul–Aug(–Sep).
Habitat: Rocky sites and meadows, near timberline and above
Elevation: 2800–3200 m

Distribution

V20-731-distribution-map.gif

N.W.T., Nunavut, Yukon, Alaska.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Erigeron yukonensis"
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 +
Rydberg +
decurrent +
linear;lanceolate oblanceolate or spatulate +
rugulose +  and muricate +
multicipital +  and fibrous-rooted +
Yukon fleabane +
not 2-lipped +  and actinomorphic +
white +  and pink or pink-purple +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
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 /> (0.52 cm5.2 mm <br />0.0052 m <br />) +
fertile +  and bisexual +
N.W.T. +, Nunavut +, Yukon +  and Alaska. +
2800–3200 m +
strigose +, glabrous +  and hirsute +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Rocky sites and meadows, near timberline and above +
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 /> (1 cm10 mm <br />0.01 m <br />) +
turbinate;hemispheric +
1.2 cm12 mm <br />0.012 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
petiolate +  and sessile +
cauline +  and basal +
erect;spreading +
deltate +
not +  and scarious +
2-carpellate +
Flowering (Jun–)Jul–Aug(–Sep). +
3-nerved +  and 1-nerved +
woolly-villous +
narrowly elliptic +  and linear-lanceolate +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
4 cm40 mm <br />0.04 m <br /> (16 cm160 mm <br />0.16 m <br />) +
oblanceolate-obovate +  and oblanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Bull. New York Bot. Gard. +
bearing subulate enations +, hairy +  and bristly +
multicipital +  and fibrous-rooted +
exalbuminous +
prostrate +  and decumbent +
hirsute +  and villoso-hirsute +
appendaged +  and truncate +
papillate +  and smooth +
Erigeron glabellus var. yukonensis +
Erigeron yukonensis +
Erigeron +
species +
inflated +  and tubular +
30 cm300 mm <br />0.3 m <br /> (40 cm400 mm <br />0.4 m <br />) +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
tree +, shrub +  and subshrub +