Erigeron calvus

Coville

Proc. Biol. Soc. Wash. 7: 69. 1892.

Common names: Bald daisy
EndemicConservation concern
Treatment appears in FNA Volume 20. Treatment on page 291. Mentioned on page 260.

Biennials or short-lived perennials, 10–14 cm; taprooted, without well-developed caudices. Stems ascending, hirsute, minutely glandular. Leaves basal (persistent) and cauline (petioles prominently ciliate, at least on proximal portions, hairs spreading, thick-based); basal blades oblong-spatulate to obovate-spatulate, 30–50 × 4–6 mm, cauline abruptly reduced distally, margins entire, faces hirsuto-villous, minutely glandular. Heads (disciform) 1–3 (usually from branches proximal to midstems). Involucres ca. 5 × 13–14 mm. Phyllaries in 2–3 series, coarsely hirsute, minutely glandular. Ray (pistillate) florets ca. 50–100; corollas usually tubular, lacking laminae, or laminae shorter than involucres. Disc corollas 4–5.1 mm (throats white-indurate, somewhat inflated, glabrate). Cypselae 1.5–1.6 mm (immature), 2-nerved, faces sparsely strigose (carpopodia whitish); pappi: outer of setae, inner of 15–20 bristles.


Phenology: Flowering Apr–May.
Habitat: Sagebrush and desert shrub
Elevation: ca. 1200 m

Discussion

Of conservation concern.

Erigeron calvus is known only from the type collection.

Selected References

None.

Lower Taxa

None.
... more about "Erigeron calvus"
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 +
Coville +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
oblong-spatulate +  and obovate-spatulate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
decurrent +
linear;lanceolate oblanceolate or spatulate +
rugulose +  and muricate +
well-developed +
Bald daisy +
not 2-lipped +  and actinomorphic +
yellow +, usually white +  and bluish or purplish +
beaked +, 2-ribbed +  and 5-ribbed +
subterete +, oblong +  and oblong-obovoid compressed +
fertile +  and bisexual +
0.4 cm4 mm <br />0.004 m <br /> (0.51 cm5.1 mm <br />0.0051 m <br />) +
fertile +  and bisexual +
ca. 1200 m +
strigose +  and hirsuto-villous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Sagebrush and desert shrub +
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 />) +
5 cm50 mm <br />0.05 m <br /> (?) +
turbinate;hemispheric +
1.3 cm13 mm <br />0.013 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
petiolate +  and sessile +
cauline +  and basal +
erect;spreading +
deltate +
Not (?) +  and Scarious (?) +
2-carpellate +
Flowering Apr–May. +
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 +
branched +  and simple +
prostrate +  and decumbent +
appendaged +  and truncate +
papillate +  and smooth +
Achaetogeron +  and Trimorpha +
Erigeron calvus +
Erigeron +
species +
inflated +  and tubular +
90 cm900 mm <br />0.9 m <br /> (100 cm1,000 mm <br />1 m <br />) +
perennial +, short-lived +  and biennial +
10 cm100 mm <br />0.1 m <br /> (14 cm140 mm <br />0.14 m <br />) +
tree +, shrub +  and subshrub +