Erigeron uncialis

S. F. Blake

Proc. Biol. Soc. Wash. 47: 173. 1934.

Common names: Lone fleabane
IllustratedEndemicConservation concern
Treatment appears in FNA Volume 20. Treatment on page 306. Mentioned on page 273, 275.
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Perennials, 0.8–7 cm (cespitose); taprooted, caudex branches usually lignescent, sometimes relatively elongate. Stems erect (greenish), sparsely loosely strigose to hirsuto-villous, usually densely villous distally, eglandular. Leaves all or mostly basal (persistent; petiole base margins spreading-ascending-ciliate); (greenish) spatulate, blades elliptic-obovate to suborbiculate, 10–40 × (1.5–) 2–6 mm (bases abruptly contracted to petioles), margins entire (apices rounded to obtuse), faces strigose to hirsuto-villous, less densely so abaxially, eglandular. Heads 1. Involucres 3–5 × 7–10 mm. Phyllaries in 2–3 series (margins purplish), hirsuto-villous, sometimes sparsely minutely glandular (midregions and near apices). Ray-florets 22–30; corollas white to pink, often with broad pink abaxial midstripe, 6–7 mm, laminae not coiling or reflexing, spreading. Disc corollas 2–2.4 mm. Cypselae 1.3–1.8 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 14–22 bristles.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Stems 0.8–2.5 cm, hirsuto-villous; leaves 10–20 mm, hirsuto-villous to loosely strigose Erigeron uncialis var. uncialis
1 Stems 3–7 cm, loosely villoso-strigose; leaves 20–40 mm, sparsely closely strigose Erigeron uncialis var. conjugans
... more about "Erigeron uncialis"
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 +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
elliptic-obovate;suborbiculate +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
rugulose +  and muricate +
Lone fleabane +
not 2-lipped +  and actinomorphic +
white +  and pink +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
subterete +, oblong +  and oblong-obovoid compressed +
fertile +  and bisexual +
0.2 cm2 mm <br />0.002 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
fertile +  and bisexual +
Calif. +  and Nev. +
strigose +  and hirsuto-villous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
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 /> (0.5 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 />) +
spreading +  and reflexing +
not coiling +
petiolate +  and sessile +
spatulate +
erect;spreading +
deltate +
not +  and scarious +
2-carpellate +
3-nerved +  and 1-nerved +
hirsuto-villous +
narrowly elliptic +  and linear-lanceolate +
Proc. Biol. Soc. Wash. +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
Illustrated +, Endemic +  and Conservation concern +
prostrate +  and decumbent +
villous +, sparsely loosely strigose +  and hirsuto-villous +
appendaged +  and truncate +
papillate +  and smooth +
Achaetogeron +  and Trimorpha +
Erigeron uncialis +
Erigeron +
species +
inflated +  and tubular +
90 cm900 mm <br />0.9 m <br /> (100 cm1,000 mm <br />1 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (7 cm70 mm <br />0.07 m <br />) +
tree +, shrub +  and subshrub +