Erigeron vernus

(Linnaeus) Torrey & A. Gray

Fl. N. Amer. 2: 176. 1841.

Common names: Early white-top fleabane
IllustratedEndemic
Basionym: Aster vernus Linnaeus Sp. Pl. 2: 876. 1753
Treatment appears in FNA Volume 20. Treatment on page 278. Mentioned on page 263.

Biennials or short-lived perennials, 15–50 cm; rhizomatous, fibrous-rooted, caudices relatively thick and short, or elongate rhizomes, or appearing simple, sometimes producing rosulate offsets. Stems erect, sparsely strigose to strigoso-hirsute or villous, eglandular. Leaves mostly basal (persistent); blades narrowly to broadly oblanceolate to spatulate, 20–100 (–150) × 4–25 mm (usually ± fleshy-thickened), margins entire or denticulate to mucronulate, faces glabrate eglandular; cauline mostly bractlike. Heads (1–) 4–20 (–25) in corymbiform arrays (from branches near apices). Involucres 3–4 × 5–11 mm. Phyllaries in 2–3 (–4) series, usually sparsely hirsute to strigose, sometimes glabrous, eglandular, sometimes viscid. Ray-florets 25–40; corollas white, 4–8 mm, laminae not coiling or reflexing. Disc corollas 2.5–3.8 mm. Cypselae subterete, 1.2–1.6 mm, 4-nerved, faces sparsely strigose; pappi: outer of setae, inner of 16–25 bristles. 2n = 18.


Phenology: Flowering (Mar–)Apr–Aug(–Oct).
Habitat: Moist to wet sites in sand or sandy clay or sandy peat, pine or pine-palmetto flatwoods and savannas, interdunal swales, road banks, ditches
Elevation: 0–50 m

Distribution

V20-563-distribution-map.gif

Ala., Fla., Ga., La., Miss., N.C., S.C., Va.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Erigeron vernus"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
Guy L. Nesom +
(Linnaeus) Torrey & A. Gray +
decurrent +
Aster vernus +
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 m <br />) +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
oblanceolate;spatulate +
0.4 cm4 mm <br />0.004 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
rugulose +  and muricate +
Early white-top fleabane +
not 2-lipped +  and actinomorphic +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
subterete +
fertile +  and bisexual +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
fertile +  and bisexual +
Ala. +, Fla. +, Ga. +, La. +, Miss. +, N.C. +, S.C. +  and Va. +
0–50 m +
strigose +  and glabrate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Moist to wet sites in sand or sandy clay or sandy peat, pine or pine-palmetto flatwoods and savannas, interdunal swales, road banks, ditches +
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 />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
turbinate;hemispheric +
0.5 cm5 mm <br />0.005 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
not coiling +
petiolate +  and sessile +
erect;spreading +
deltate +
more or less dentate to pinnatifid +  and entire +
denticulate +  and mucronulate +
not +  and scarious +
2-carpellate +
Flowering (Mar–)Apr–Aug(–Oct). +
glabrous +, usually sparsely hirsute +  and strigose +
narrowly elliptic +  and linear-lanceolate +
Fl. N. Amer. +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
Illustrated +  and Endemic +
prostrate +  and decumbent +
sparsely strigose +  and strigoso-hirsute or villous +
appendaged +  and truncate +
papillate +  and smooth +
Achaetogeron +  and Trimorpha +
Erigeron vernus +
Erigeron +
species +
inflated +  and tubular +
rhizomatous +  and fibrous-rooted +
90 cm900 mm <br />0.9 m <br /> (100 cm1,000 mm <br />1 m <br />) +
perennial +, short-lived +  and biennial +
15 cm150 mm <br />0.15 m <br /> (50 cm500 mm <br />0.5 m <br />) +
tree +, shrub +  and subshrub +