Eupatorium anomalum

Nash

Bull. Torrey Bot. Club 23: 106. 1896.

Common names: Florida thoroughwort
EndemicConservation concern
Treatment appears in FNA Volume 21. Treatment on page 466. Mentioned on page 464.

Perennials, 80–150+ cm. Stems (from tuberous rhizomes) single, densely branched distally (shoots often develop from lateral buds), puberulent throughout (denser distally). Leaves usually opposite (distal sometimes alternate); sessile or subsessile; blades 3-nerved distal to bases, elliptic to oblong, 15–50 × (5–) 10–20 mm, bases cuneate, margins entire or serrate (unevenly toothed), apices rounded to acute, faces puberulent (abaxial) or glabrate (adaxial), glanddotted (both). Heads in corymbiform arrays. Phyllaries 8–12 in 2–3 series, oblong to lanceolate, 2.5–5 × 0.5–0.7 mm, apices rounded to acute, abaxial faces puberulent throughout. Florets 5; corollas 3–3.5 mm. Cypselae 1.8–3 mm; pappi of 20–35 bristles 3.5–4.5 mm. 2n = 20, 30, 40.


Phenology: Flowering Jul–Aug.
Habitat: Wet, low ground, flatwoods
Elevation: 10–100 m

Distribution

V21-1161-distribution-map.gif

Ala., Fla., Ga., N.C., S.C.

Discussion

Of conservation concern.

Eupatorium anomalum has been proposed to be intermediate in morphology between E. rotundifolium and E. mohrii and, possibly, a hybrid derivative of that pairing. Molecular data suggest that its derivation is from hybridization between E. serotinum and E. mohrii.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

... more about "Eupatorium anomalum"
40 +, 30 +  and 20 +
not tailed +, truncate +, rounded +  and obtuse +
rounded;acute +
scarious +
usually ovate +  and lanceolate +
usually terete +  and clavate +
diffuse +  and dense +
indeterminate +  and determinate +
Kunsiri Chaw Siripun +  and Edward E. Schilling +
puberulent +
cuneate +
enlarged +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
dissected +, lobed +, toothed +  and entire +
elliptic;oblong +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
papillate +  and rugose +
(4-)5-angled;10-ribbed +
filiform +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Florida thoroughwort +
pinkish +  and white +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
prismatic +
fertile +  and bisexual +
Ala. +, Fla. +, Ga. +, N.C. +  and S.C. +
10–100 m +
glabrate +  and puberulent +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Wet, low ground, flatwoods +
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 +
subsessile +  and sessile +
triangular +
serrate +  and entire +
2-carpellate +
persistent +
Flowering Jul–Aug. +
nerved +  and 2-3-nerved +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
8 +  and 12 +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
Bull. Torrey Bot. Club +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
exalbuminous +
Endemic +  and Conservation concern +
puberulent +
appendaged +  and truncate +
hirsutulous +
papillate +
Compositae +
Eupatorium anomalum +
Eupatorium +
species +
campanulate +
toothed +  and entire +
80 cm800 mm <br />0.8 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
vine +, shrub +  and subshrub +