Arnica acaulis

(Walter) Britton

Prelim. Cat., 30. 1888.

Common names: Common leopardbane
Endemic
Basionym: Doronicum acaule Walter Fl. Carol., 205. 1788
Treatment appears in FNA Volume 21. Treatment on page 368. Mentioned on page 367.
Revision as of 22:57, 29 July 2020 by imported>Volume Importer
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Plants 20–80 cm. Stems simple. Leaves 2–4 (–6) pairs, nearly all basal; sessile; blades (with 3, 5, or 7 prominent, subparallel veins) broadly elliptic, ovate, or rhombic, 4–15 × 1.5–8 cm, margins mostly entire, apices mostly obtuse, faces hirsute and stipitate-glandular (cauline leaves 0 or 1–2, distalmost often alternate, much reduced). Heads 3–20. Involucres campanulate. Phyllaries 12–18, narrowly ovate. Ray-florets 10–16; corollas yellow. Disc-florets: corollas yellow; anthers yellow. Cypselae dark gray to dark-brown, 5–7 mm, glabrous or sparsely stipitate-glandular; pappi white, bristles barbellate. 2n = 38.


Phenology: Flowering Apr–Jun.
Habitat: Sandy pine woods and clearings, often in damp soils, chiefly on Coastal Plain
Elevation: 0–300 m

Distribution

V21-916-distribution-map.gif

Del., D.C., Fla., Ga., Md., N.J., N.C., Pa., S.C., Va.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Arnica acaulis"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
corymbiform +  and cymiform +
indeterminate +  and determinate +
Steven J. Wolf +
(Walter) Britton +
decurrent +
Doronicum acaule +
compound +  and simple +
4 cm40 mm <br />0.04 m <br /> (15 cm150 mm <br />0.15 m <br />) +
rhombic;ovate;rhombic;ovate;elliptic +
1.5 cm15 mm <br />0.015 m <br /> (8 cm80 mm <br />0.08 m <br />) +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
connate +  and distinct +
Common leopardbane +
stipitate-glandular +  and hairy +
dark gray +  and dark-brown +
stipitate-glandular +  and glabrous +
obovoid-cylindric +, fusiform +  and conic +
fertile +  and bisexual +
fertile +  and bisexual +
Del. +, D.C. +, Fla. +, Ga. +, Md. +, N.J. +, N.C. +, Pa. +, S.C. +  and Va. +
0–300 m +
stipitate-glandular +  and hirsute +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
campanulate +  and cylindric +
Sandy pine woods and clearings, often in damp soils, chiefly on Coastal Plain +
discoid +  and radiate +
in cymiform or corymbiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.6 cm6 mm <br />0.006 m <br /> (2 cm20 mm <br />0.02 m <br />) +
campanulate +
cauline +  and basal +
2 (?) +  and 4 (?) +
deltate +
toothed +  and entire +
2-carpellate +
subplumose +  and barbellate +
persistent +
10 +  and 50 +
aristate +
Flowering Apr–Jun. +
12 +  and 18 +
Prelim. Cat., +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
distinct +
4 +  and 20 +
exalbuminous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Bahiinae +  and Undefined (tribe Undefined) subtribe Palafoxiinae +
Arnica acaulis +
species +
campanulate +  and cylindric +
80 cm800 mm <br />0.8 m <br /> (300 cm3,000 mm <br />3 m <br />) +
1 cm10 mm <br />0.01 m <br /> (80 cm800 mm <br />0.8 m <br />) +
toothed +  and entire +
80 cm800 mm <br />0.8 m <br /> (300 cm3,000 mm <br />3 m <br />) +
5 cm50 mm <br />0.05 m <br /> (100 cm1,000 mm <br />1 m <br />) +
80 cm800 mm <br />0.8 m <br /> (300 cm3,000 mm <br />3 m <br />) +