Erigeron aureus

Greene

Pittonia 2: 1691891.

Common names: Golden fleabane
Endemic
Basionym: Haplopappus brandegeei A. Gray in A. Gray et al., Syn. Fl. N. Amer. 1(2): 132. 1884 (as Aplopappus brandegei),
Synonyms: E. aureus var. acutifolius Raup
Treatment appears in FNA Volume 20. Treatment on page 323. Mentioned on page 265.

Perennials, 1–15 cm; fibrous-rooted, caudices usually simple, rarely branched. Stems erect to basally ascending, villoso-hirsute to ascending-strigose, minutely and inconspicuously glandular. Leaves basal (persistent) and cauline; blades spatulate to oblanceolate-spatulate, 15–60 × 3–13 mm, cauline reduced distally, becoming bractlike, margins entire, faces finely hirsuto-villous to loosely strigose, eglandular. Heads 1. Involucres (5–) 6–8 × 8–15 mm. Phyllaries in 2–3 series (purple), sparsely to densely woolly-villous (at least margins), sparsely minutely glandular. Ray-florets 30–50 (–68); corollas yellow, 6–9 (–10) mm, laminae tardily coiling. Disc corollas 3–3.8 mm. Cypselae 1.6–2 mm, 2-nerved, faces loosely strigose; pappi: outer of setae, inner of 14–25 bristles. 2n = 18.


Phenology: Flowering Jun–Aug(–Sep).
Habitat: Ridges, crevices, talus and other rocky slopes, alpine tundra
Elevation: (1500–)1600–2700 m

Discussion

Erigeron aureus var. acutifolius has leaves apically acute (versus rounded to broadly obtuse, sometimes emarginate, in the typical form) and is known only from the type locality, a peat bog in British Columbia (Peace River District). It was not listed or otherwise recognized in a recent flora of that province (G. W. Douglas et al. 1998–2002, vol. 1).

Erigeron ×arthurii B. Boivin was described as “sp. nov.” and was noted to have originated as a hybrid between E. acris and E. aureus. It was treated by E. H. Moss and J. G. Packer (1983) as a hybrid. Specimens cited by Boivin are from widely separated localities in southwestern British Columbia and adjacent Alberta. It was included at specific rank in the treatment by A. C. Budd et al. (1987) but not by H. J. Scoggan (1978–1979, part 4) or G. W. Douglas et al. (1998–2002, vol. 1).

Selected References

None.

Lower Taxa

None.
... more about "Erigeron aureus"
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 +
Greene +
decurrent +
Haplopappus brandegeei +
1.5 cm15 mm <br />0.015 m <br /> (6 cm60 mm <br />0.06 m <br />) +
spatulate;oblanceolate-spatulate +
0.3 cm3 mm <br />0.003 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
rugulose +  and muricate +
branched +  and simple +
Golden fleabane +
not 2-lipped +  and actinomorphic +
0.9 cm9 mm <br />0.009 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
subterete +, oblong +  and oblong-obovoid compressed +
fertile +  and bisexual +
0.3 cm3 mm <br />0.003 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
fertile +  and bisexual +
Alta. +, B.C. +  and Wash. +
(1500–)1600–2700 m +
strigose +, finely hirsuto-villous +  and loosely strigose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Ridges, crevices, talus and other rocky slopes, alpine tundra +
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 /> (0.6 cm6 mm <br />0.006 m <br />) +
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 +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
petiolate +  and sessile +
cauline +  and basal +
erect;spreading +
deltate +
not +  and scarious +
2-carpellate +
Flowering Jun–Aug(–Sep). +
3-nerved +  and 1-nerved +
woolly-villous +
narrowly elliptic +  and linear-lanceolate +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
branched +  and simple +
prostrate +  and decumbent +
erect +  and basally ascending +
villoso-hirsute +  and ascending-strigose +
appendaged +  and truncate +
papillate +  and smooth +
E. aureus var. acutifolius +
Erigeron aureus +
Erigeron +
species +
inflated +  and tubular +
90 cm900 mm <br />0.9 m <br /> (100 cm1,000 mm <br />1 m <br />) +
1 cm10 mm <br />0.01 m <br /> (15 cm150 mm <br />0.15 m <br />) +
tree +, shrub +  and subshrub +