Erigeron compactus

S. F. Blake

Proc. Biol. Soc. Wash. 35: 78. 1922.

Common names: Fern-leaf fleabane
EndemicConservation concern
Basionym: Erigeron pulvinatus Rydberg Fl. Rocky Mts., 911, 1067. 1917,
Treatment appears in FNA Volume 20. Treatment on page 295. Mentioned on page 276.

Perennials, 2–10 cm; taprooted, caudices branched. Stems erect (scapiform, bracteate), finely strigose, eglandular. Leaves (persistent) mostly basal (leaf-bases broadened or not, not thickened and whitish-indurate); blades linear, 4–20 × 0.5–1.5 mm, cauline bractlike or absent, margins entire, faces densely, finely strigose (hairs thin-based), eglandular. Heads 1. Involucres 5–8 × 7–17 mm. Phyllaries in 2–3 (–4) series, finely and closely strigose (hairs thin-based), inconspicuously minutely glandular. Ray-florets 15–32; corollas white to pinkish, often with an abaxial lilac midstripe, 6–11 mm (tubes and laminae bases glabrous or glabrate), laminae tardily coiling. Disc corollas 4.5–6 mm. Cypselae 2.8–3.2 mm, 2-nerved, margins velutinous-ciliate, faces glabrous; pappi: outer of setae, inner of 30–40 bristles.


Phenology: Flowering May–Jun.
Habitat: Dry, sandy or rocky soil, dunes, sagebrush, pinyon-juniper
Elevation: 1300–2900 m

Discussion

Of conservation concern.

Selected References

None.

Lower Taxa

None.
... more about "Erigeron compactus"
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 +
S. F. Blake +
decurrent +
Erigeron pulvinatus +
0.4 cm4 mm <br />0.004 m <br /> (2 cm20 mm <br />0.02 m <br />) +
linear;lanceolate oblanceolate or spatulate +
0.5mm;1.5mm +
rugulose +  and muricate +
Fern-leaf fleabane +
not 2-lipped +  and actinomorphic +
white +  and pinkish +
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
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 /> (0.6 cm6 mm <br />0.006 m <br />) +
fertile +  and bisexual +
Calif. +, Nev. +  and Utah. +
1300–2900 m +
glabrous +  and strigose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry, sandy or rocky soil, dunes, sagebrush, pinyon-juniper +
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 />) +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
turbinate;hemispheric +
0.7 cm7 mm <br />0.007 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
petiolate +  and sessile +
erect;spreading +
deltate +
Not (?) +  and Scarious (?) +
2-carpellate +
Flowering May–Jun. +
3-nerved +  and 1-nerved +
narrowly elliptic +  and linear-lanceolate +
Proc. Biol. Soc. Wash. +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
Endemic +  and Conservation concern +
prostrate +  and decumbent +
appendaged +  and truncate +
papillate +  and smooth +
Achaetogeron +  and Trimorpha +
Erigeron compactus +
Erigeron +
species +
inflated +  and tubular +
90 cm900 mm <br />0.9 m <br /> (100 cm1,000 mm <br />1 m <br />) +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
tree +, shrub +  and subshrub +