Erigeron flettii

G. N. Jones

Bot. Surv. Olympic Penins., 244. 1936.

Common names: Flett’s fleabane Olympic Mountains fleabane
Endemic
Treatment appears in FNA Volume 20. Treatment on page 323. Mentioned on page 267, 324.

Perennials 5–15 cm; rhizomatous, fibrous-rooted, caudex or rhizome branches relatively short and thick. Stems basally ascending, sparsely villous to pilose, minutely glandular. Leaves mostly basal (persistent; petioles equaling or longer than blades); blades spatulate to oblanceolate-spatulate, 10–50 × 4–12 mm, cauline abruptly reduced distally, margins entire (apices rounded), faces sparsely hirsute or glabrous, eglandular. Heads 1. Involucres 6–8 × 10–15 mm. Phyllaries in 2–3 (–4) series (purplish throughout or at margins and tips), hirsute to hirsuto-villous (hair cross-walls clear or reddish to reddish purple), minutely glandular. Ray-florets 25–40; corollas white, 7–10 mm (mostly 1–2 mm wide), laminae coiling tardily. Disc corollas 3.5–4.5 mm. Cypselae 2–2.8 mm, 2-nerved, faces strigose; pappi: outer of setae, inner of 15–20 bristles.


Phenology: Flowering Jul–Aug.
Habitat: Ledges, crevices, ridges, rocky slopes, meadows, alpine or near timberline
Elevation: (1500–)1800–3200 m

Discussion

Erigeron flettii differs from E. grandiflorus in having fewer, wider, consistently white rays, broadly spatulate basal leaves with bases constricted into narrow petioles longer than the blades and apices rounded or obtuse, less dense involucral vestiture, and strongly barbellate pappus bristles. It is known only from the Olympic Mountains.

Selected References

None.

Lower Taxa

None.

"thick" is not a number.

... more about "Erigeron flettii"
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 +
G. N. Jones +
decurrent +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
spatulate;oblanceolate-spatulate +
4mm;12mm +
rugulose +  and muricate +
Flett’s fleabane +  and Olympic Mountains fleabane +
not 2-lipped +  and actinomorphic +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 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 /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
fertile +  and bisexual +
(1500–)1800–3200 m +
strigose +, glabrous +  and hirsute +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Ledges, crevices, ridges, rocky slopes, meadows, alpine or near timberline +
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 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
petiolate +  and sessile +
erect;spreading +
deltate +
Not (?) +  and Scarious (?) +
2-carpellate +
Flowering Jul–Aug. +
3-nerved +  and 1-nerved +
hirsute +  and hirsuto-villous +
narrowly elliptic +  and linear-lanceolate +
Bot. Surv. Olympic Penins., +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
branched +  and simple +
prostrate +  and decumbent +
appendaged +  and truncate +
papillate +  and smooth +
Achaetogeron +  and Trimorpha +
Erigeron flettii +
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 />) +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
tree +, shrub +  and subshrub +