Eupatorium rotundifolium var. scabridum

(Elliott) A. Gray in A. Gray et al.

in A. Gray et al., Syn. Fl. N. Amer. 1(2): 99. 1884.

Endemic
Basionym: Eupatorium scabridum Elliott Sketch Bot. S. Carolina 2: 299. 1823
Treatment appears in FNA Volume 21. Treatment on page 473. Mentioned on page 472.

Leaf-blades 3-nerved distal to bases, 20–50 × 15–30 mm, broadest near bases, bases broadly cuneate to cuneate, margins serrate. 2n = 20, 30.


Phenology: Flowering Jul–Aug.
Habitat: Disturbed sites
Elevation: 10–100+ m

Distribution

V21-1186-distribution-map.gif

Ala., Ark., Fla., Ga., La., Miss., Mo., Okla., S.C., Tex.

Discussion

Variety scabridum includes apomictic polyploids and has been suggested to have been derived from hybridization between var. rotundifolium and Eupatorium semiserratum.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

not tailed +, truncate +, rounded +  and obtuse +
acute;acute +
scarious +
usually ovate +  and lanceolate +
usually terete +  and clavate +
diffuse +  and dense +
indeterminate +  and determinate +
Kunsiri Chaw Siripun +  and Edward E. Schilling +
(Elliott) A. Gray in A. Gray et al. +
puberulent +
broadly cuneate +  and cuneate +
enlarged +
15mm;30mm +
Eupatorium scabridum +
5 cm50 mm <br />0.05 m <br /> (7 cm70 mm <br />0.07 m <br />) +
4 cm40 mm <br />0.04 m <br /> (6 cm60 mm <br />0.06 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
dissected +, lobed +, toothed +  and entire +
ovate;less deltate;orbiculate +
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
papillate +  and rugose +
(4-)5-angled;10-ribbed +
filiform +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
pinkish +  and white +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
prismatic +
fertile +  and bisexual +
Ala. +, Ark. +, Fla. +, Ga. +, La. +, Miss. +, Mo. +, Okla. +, S.C. +  and Tex. +
10–100+ m +
puberulent +  and villous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Disturbed sites +
in usually determinate , rarely indeterminate , arrays +  and singly +
indeterminate +
each +  and sessile +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
obconic;ellipsoid +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
subsessile +  and sessile +
triangular +
crenate +  and serrate +
2-carpellate +
persistent +
Flowering Jul–Aug. +
nerved +  and 2-3-nerved +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
8 +  and 10 +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
in A. Gray et al., Syn. Fl. N. Amer. +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
exalbuminous +
puberulent +
appendaged +  and truncate +
hirsutulous +
papillate +
Compositae +
Eupatorium rotundifolium var. scabridum +
Eupatorium rotundifolium +
variety +
campanulate +
toothed +  and entire +
40 cm400 mm <br />0.4 m <br /> (100 cm1,000 mm <br />1 m <br />) +
vine +, shrub +  and subshrub +