Erigeron elmeri

(Greene) Greene

Fl. Francisc., 393. 1897.

Common names: Elmer’s fleabane
Endemic
Basionym: Aster elmeri Greene Pittonia 2: 170. 1891
Synonyms: Erigeron breweri var. elmeri (Greene) Jepson
Treatment appears in FNA Volume 20. Treatment on page 318. Mentioned on page 266, 270.

Perennials, 6–20 cm; apparently taprooted (often not evident or not collected), rhizomes relatively slender, woody fibrous-rooted or rhizomelike caudex branches. Stems prostrate to decumbent-trailing, less commonly ascending-erect (without axillary leaf tufts), sparsely to moderately strigose, eglandular. Leaves cauline; blades narrowly lanceolate to oblong, 5–20 × 1–2 mm, relatively even-sized, margins entire, faces strigose, eglandular. Heads 1 or 2–3. Involucres 3.5–5 × 7–10 mm. Phyllaries in 3–5 series (often purple-tipped; margins of inner narrowly scarious), glabrous, minutely glandular. Ray-florets 12–21; corollas white, drying bluish, 5–6 mm, laminae coiling. Disc corollas 3.5–4 mm (throats slightly indurate, not inflated). Cypselae 1.6–2.5 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 18–26 bristles.


Phenology: Flowering Jun–Sep.
Habitat: Ledges, crevices, cracks, talus
Elevation: 1300–3300 m

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Erigeron elmeri"
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) Greene +
decurrent +
Aster elmeri +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
narrowly lanceolate;oblong +
equal-sized +
1mm;2mm +
rugulose +  and muricate +
Elmer’s fleabane +
not 2-lipped +  and actinomorphic +
bluish +  and white +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 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 /> (0.4 cm4 mm <br />0.004 m <br />) +
fertile +  and bisexual +
1300–3300 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Ledges, crevices, cracks, talus +
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 />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
turbinate;hemispheric +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
petiolate +  and sessile +
erect;spreading +
deltate +
Not (?) +  and Scarious (?) +
2-carpellate +
Flowering Jun–Sep. +
3-nerved +  and 1-nerved +
narrowly elliptic +  and linear-lanceolate +
Fl. Francisc., +
bearing subulate enations +, hairy +  and bristly +
rhizomelike +, fibrous-rooted +  and woody +
exalbuminous +
prostrate +  and decumbent +
ascending-erect +, prostrate +  and decumbent-trailing +
appendaged +  and truncate +
papillate +  and smooth +
Erigeron breweri var. elmeri +
Erigeron elmeri +
Erigeron +
species +
inflated +  and tubular +
90 cm900 mm <br />0.9 m <br /> (100 cm1,000 mm <br />1 m <br />) +
6 cm60 mm <br />0.06 m <br /> (20 cm200 mm <br />0.2 m <br />) +
tree +, shrub +  and subshrub +