Erigeron maniopotamicus

G. L. Nesom & T. W. Nelson

Sida 21: 673, fig. 1. 2004.

Common names: Mad River fleabane
Treatment appears in FNA Volume 20. Treatment on page 279. Mentioned on page 275.
Revision as of 21:58, 29 July 2020 by imported>Volume Importer
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Perennials, 10–22 (–27) cm, taprooted, caudices usually simple, rarely with branches to 20 cm. Stems ascending to decumbent-ascending (usually basally purplish), sparsely to densely strigose (basal-cells inclined, hairs even-width), eglandular. Leaves basal (persistent) and cauline; blades (strongly to weakly 3-nerved) oblanceolate to spatulate-oblanceolate, 30–100 × (3–) 5–12 (–14) mm, cauline gradually reduced distally or not, usually continuing to near heads, margins entire, faces hirsuto-pilose to weakly pilose, eglandular. Heads 1 (–4) (on peduncles 0.5–5 cm), held well beyond leaves at peak flowering, from branches near midstem (or slightly more distal). Involucres (5–) 6–7 × 9–12 (–14) mm. Phyllaries in 2–3 (–4) series, (elliptic to oblong-oblanceolate, abruptly acuminate), hirsuto-strigose to pilose, densely villous at bases, usually eglandular, sometimes sparsely glandular. Ray-florets (16–) 21–33; corollas white to pinkish or purplish, 10–12 mm, laminae not (or weakly) coiling or reflexing. Disc corollas 3.2–3.8 mm. Cypselae 2–2.5 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 16–20 bristles.


Phenology: Flowering Jun–Aug.
Habitat: Dry, barren meadows and openings in mixed conifer woodlands
Elevation: 1300–1500 m

Discussion

Of conservation concern.

Selected References

None.

Lower Taxa

None.
... more about "Erigeron maniopotamicus"
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 +
G. L. Nesom & T. W. Nelson +
decurrent +
1.2 cm12 mm <br />0.012 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
oblanceolate;spatulate-oblanceolate +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
rugulose +  and muricate +
0 cm0 mm <br />0 m <br /> (20 cm200 mm <br />0.2 m <br />) +
Mad River fleabane +
not 2-lipped +  and actinomorphic +
white +  and pinkish or purplish +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
subterete +, oblong +  and oblong-obovoid compressed +
fertile +  and bisexual +
0.32 cm3.2 mm <br />0.0032 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
fertile +  and bisexual +
1300–1500 m +
strigose +, hirsuto-pilose +  and weakly pilose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry, barren meadows and openings in mixed conifer woodlands +
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 /> (0.6 cm6 mm <br />0.006 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
turbinate;hemispheric +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
not coiling +
petiolate +  and sessile +
cauline +  and basal +
erect;spreading +
deltate +
not +  and scarious +
2-carpellate +
Flowering Jun–Aug. +
villous +, hirsuto-strigose +  and pilose +
narrowly elliptic +  and linear-lanceolate +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
prostrate +  and decumbent +
ascending +  and decumbent-ascending +
appendaged +  and truncate +
papillate +  and smooth +
Achaetogeron +  and Trimorpha +
Erigeron maniopotamicus +
Erigeron +
species +
inflated +  and tubular +
22 cm220 mm <br />0.22 m <br /> (27 cm270 mm <br />0.27 m <br />) +
10 cm100 mm <br />0.1 m <br /> (22 cm220 mm <br />0.22 m <br />) +
tree +, shrub +  and subshrub +