Eupatorium cannabinum

Linnaeus

Sp. Pl. 2: 838. 1753.

Common names: Hemp agrimony
Treatment appears in FNA Volume 21. Treatment on page 466. Mentioned on page 462.

Perennials, 30–150 cm. Stems (from short rhizomes) single, branched distally, puberulent. Leaves opposite; subsessile or petiolate; blades palmately 3 (–5) -lobed (at least larger proximal, lobes relatively broad), blades (or lobes) lanceolate to lanceovate, 50–100 × 20–40 mm, margins serrate, apices rounded to acute, faces puberulent, glanddotted. Heads in dense, corymbiform arrays. Phyllaries 8–10 in 2–3 series, oblong, 4.5–6 × 1.5–2 mm, apices rounded, abaxial faces puberulent, glanddotted. Florets (4–) 5 (–6); corollas (usually pinkish) 2–2.5 mm. Cypselae 2–3 mm; pappi of 20–30 bristles 3–5 mm. 2n = 20.


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

Distribution

V21-1162-distribution-map.gif

Introduced; B.C., N.Y., Pa., Va., Europe

Discussion

Eupatorium cannabinum is a garden escape; it is native to Europe and may be established in British Columbia; it is only casually adventive elsewhere in the flora area.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

... more about "Eupatorium cannabinum"
not tailed +, truncate +, rounded +  and obtuse +
rounded;rounded;acute +
scarious +
usually ovate +  and lanceolate +
usually terete +  and clavate +
indeterminate +  and determinate +
Kunsiri Chaw Siripun +  and Edward E. Schilling +
Linnaeus +
puberulent +
decurrent +
enlarged +
nerved +  and 3-nerved +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
dissected +, lobed +, toothed +  and entire +
lanceolate;lanceovate +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
papillate +  and rugose +
(4-)5-angled;10-ribbed +
filiform +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Hemp agrimony +
pinkish +  and white +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
prismatic +
fertile +  and bisexual +
B.C. +, N.Y. +, Pa. +, Va. +  and Europe +
10–100 m +
puberulent +
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 +
petiolate +  and subsessile +
triangular +
2-carpellate +
persistent +
Flowering Jul–Sep. +
nerved +  and 2-3-nerved +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
8 +  and 10 +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
exalbuminous +
puberulent +
appendaged +  and truncate +
hirsutulous +
papillate +
Compositae +
Eupatorium cannabinum +
Eupatorium +
species +
campanulate +
toothed +  and entire +
30 cm300 mm <br />0.3 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
vine +, shrub +  and subshrub +