Eupatorium resinosum

Torrey ex de Candolle in A. P. de Candolle and A. L. P. P. de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 176. 1836.

Common names: Pine barren thoroughwort
Endemic
Treatment appears in FNA Volume 21. Treatment on page 472. Mentioned on page 463.

Perennials, 40–100+ cm. Stems (from short rhizomes) single, branched distally (among heads), puberulent throughout. Leaves usually opposite (distal sometimes alternate); sessile; blades pinnately nerved, narrowly elliptic, 40–100+ × 5–20 mm, bases cuneate (not perfoliate), margins serrate, apices acute to acuminate, faces puberulent, glanddotted. Heads in corymbiform arrays. Phyllaries 10–12 in 2–3 series, elliptic to oblong, 1.5–4 × 0.8–1 mm, apices broadly acute to acute, abaxial faces puberulent, glanddotted. Florets 9–14; corollas 3–3.5 mm. Cypselae 2–3 mm; pappi of 20–30 bristles 3–3.5 mm. 2n = 20.


Phenology: Flowering Aug–Sep.
Habitat: Moist, low ground, pocosins, bogs, cutover woodlands, pine barrens, acid soils
Elevation: 20–100+ m

Discussion

Eupatorium resinosum is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

... more about "Eupatorium resinosum"
not tailed +, truncate +, rounded +  and obtuse +
broadly acute;acute +
scarious +
usually ovate +  and lanceolate +
usually terete +  and clavate +
diffuse +  and dense +
indeterminate +  and determinate +
Kunsiri Chaw Siripun +  and Edward E. Schilling +
Torrey ex de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +
puberulent +
cuneate +
enlarged +
4 cm40 mm <br />0.04 m <br /> (10 cm100 mm <br />0.1 m <br />) +
dissected +, lobed +, toothed +  and entire +
ovate;lanceolate or linear +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
papillate +  and rugose +
(4-)5-angled;10-ribbed +
filiform +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Pine barren 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 +
N.J. +, N.C. +  and S.C. +
20–100+ m +
puberulent +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Moist, low ground, pocosins, bogs, cutover woodlands, pine barrens, acid soils +
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 +
triangular +
2-carpellate +
persistent +
Flowering Aug–Sep. +
nerved +  and 2-3-nerved +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
10 +  and 12 +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
exalbuminous +
puberulent +
appendaged +  and truncate +
hirsutulous +
papillate +
Compositae +
Eupatorium resinosum +
Eupatorium +
species +
campanulate +
toothed +  and entire +
40 cm400 mm <br />0.4 m <br /> (100 cm1,000 mm <br />1 m <br />) +
vine +, shrub +  and subshrub +