Erigeron glaucus

Ker Gawler

Bot. Reg. 1: plate 10. 1815.

Common names: Seaside fleabane
Endemic
Treatment appears in FNA Volume 20. Treatment on page 332. Mentioned on page 267.

Perennials, 5–30 cm (usually forming dense colonies); rhizomatous, fibrous-rooted, sometimes with branching caudices. Stems procumbent to decumbent-ascending, hirsuto-villous or nearly glabrous, usually minutely glandular. Leaves basal (usually persistent) and cauline; basal blades broadly obovate to spatulate, 20–130 (–150) × 10–30 (–50) mm, cauline little reduced distally (fleshy, bases sometimes subclasping), margins entire or with 2–4 pairs of shallow teeth, faces glabrous or hirsute, eglandular. Heads 1–15. Involucres 7–13 × 15–35 mm. Phyllaries in 3–4 series, sparsely to densely villous (cross-walls not colored), minutely glandular. Ray-florets 80–165; corollas white to purple or blue, 8–15 mm, laminae coiling. Disc corollas 4.5–5.5 mm. Cypselae 1.8–2.4 mm, 2–4 (–6) -nerved, faces sparsely strigose; pappi: outer of setae, inner of 20–30 bristles. 2n = 18.


Phenology: Flowering (Mar–)May–Jul(–Dec).
Habitat: Coastal bluffs, dunes, and beaches
Elevation: 0–30 m

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Erigeron glaucus"
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 +
Ker Gawler +
13 cm130 mm <br />0.13 m <br /> (15 cm150 mm <br />0.15 m <br />) +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
2 cm20 mm <br />0.02 m <br /> (13 cm130 mm <br />0.13 m <br />) +
broadly obovate +  and spatulate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
decurrent +
linear;lanceolate oblanceolate or spatulate +
rugulose +  and muricate +
Seaside fleabane +
not 2-lipped +  and actinomorphic +
white +  and purple or blue +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
2-4(-6)-nerved +
beaked +, 2-ribbed +  and 5-ribbed +
subterete +, oblong +  and oblong-obovoid compressed +
fertile +  and bisexual +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
fertile +  and bisexual +
Calif. +  and Oreg. +
0–30 m +
strigose +, hirsute +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Coastal bluffs, dunes, and beaches +
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 />) +
0.7 cm7 mm <br />0.007 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
turbinate;hemispheric +
1.5 cm15 mm <br />0.015 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
petiolate +  and sessile +
cauline +  and basal +
erect;spreading +
deltate +
with 2-4 pairs +  and entire +
not +  and scarious +
2-carpellate +
Flowering (Mar–)May–Jul(–Dec). +
3-nerved +  and 1-nerved +
narrowly elliptic +  and linear-lanceolate +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
branched +  and simple +
prostrate +  and decumbent +
decumbent-ascending +
glabrous +  and hirsuto-villous +
appendaged +  and truncate +
papillate +  and smooth +
Achaetogeron +  and Trimorpha +
Erigeron glaucus +
Erigeron +
species +
inflated +  and tubular +
shallow +
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 /> (30 cm300 mm <br />0.3 m <br />) +
tree +, shrub +  and subshrub +