Eutrochium purpureum var. purpureum

IllustratedEndemic
Synonyms: Eupatorium amoenum Pursh Eupatorium falcatum Michaux Eupatorium fuscorubrum Walter Eupatorium harnedii Steele ex Harned Eupatorium purpureum var. album (Pursh) A. Gray Eupatorium purpureum var. amoenum (Michaux) Britton Eupatorium purpureum var. falcatum Alph. Wood Eupatorium purpureum var. ovatum (Lamarck) Alph. Wood Eupatorium purpureum var. verticillatum (Pursh) Farwell Eupatorium trifoliatum Eupatorium trifoliatum var. amoenum
Treatment appears in FNA Volume 21. Treatment on page 477.

Leaves: petioles glabrous; abaxial faces usually glabrous, sometimes sparsely to densely hairy along major veins (hairs fine, simple, 1-cellular). 2n = 20.


Phenology: Flowering late summer–early fall.
Habitat: Rich, open deciduous woodlands, woodland borders, and thickets, wooded ravines, near bases of slopes bordering wet grounds, partial or deep shade
Elevation: 10–1200 m

Distribution

V21-1198-distribution-map.gif

Ont., Ala., Ark., Conn., Del., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Vt., Va., W.Va., Wis.

Discussion

East of the Mississippi River, abaxial leaf faces of var. purpureum tend to be glabrous and rarely pubescent along the major veins. West of the Mississippi (and in the xeric sandhills of South Carolina), abaxial leaf faces are commonly densely pubescent along the major veins.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

hairy +  and glabrous +
glabrous +, glabrescent +  and puberulent +
not tailed +, truncate +, rounded +  and obtuse +
scarious +
usually ovate +  and lanceolate +
usually terete +  and clavate +
corymbiform +  and compound +
indeterminate +  and determinate +
Eric E. Lamont +
(Linnaeus) E. E. Lamont +
puberulent +
tapered +
enlarged +
Eupatorium purpureum +
26 cm260 mm <br />0.26 m <br /> (30 cm300 mm <br />0.3 m <br />) +
15 cm150 mm <br />0.15 m <br /> (18 cm180 mm <br />0.18 m <br />) +
9 cm90 mm <br />0.09 m <br /> (26 cm260 mm <br />0.26 m <br />) +
dissected +, lobed +, toothed +  and entire +
ovate;deltate-ovate +
3cm;15cm +
papillate +  and rugose +
(4-)5-angled;10-ribbed +
less filiform;clavate +
purplish +  and pale pinkish +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
scabrellous +
prismatic +
fertile +  and bisexual +
Ont. +, Ala. +, Ark. +, Conn. +, Del. +, Fla. +, Ga. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Nebr. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Okla. +, Pa. +, R.I. +, S.C. +, Tenn. +, Vt. +, Va. +, W.Va. +  and Wis. +
10–1200 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Rich, open deciduous woodlands, woodland borders, and thickets, wooded ravines, near bases of slopes bordering wet grounds, partial or deep shade +
in usually determinate , rarely indeterminate , arrays +  and singly +
indeterminate +
each +  and sessile +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
opposite +  and whorled +
ovate +  and deltate +
2-carpellate +
persistent +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Flowering late summer–early fall. +
hairy +  and glabrous +
10 +  and 22 +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
exalbuminous +
Illustrated +  and Endemic +
hollow +  and solid +
purplish green +, greenish +  and dark purple +
appendaged +  and truncate +
hirsutulous +
papillate +
Eupatorium amoenum +, Eupatorium falcatum +, Eupatorium fuscorubrum +, Eupatorium harnedii +, Eupatorium purpureum var. album +, Eupatorium purpureum var. amoenum +, Eupatorium purpureum var. falcatum +, Eupatorium purpureum var. ovatum +, Eupatorium purpureum var. verticillatum +, Eupatorium trifoliatum +  and Eupatorium trifoliatum var. amoenum +
Eutrochium purpureum var. purpureum +
Eutrochium purpureum +
variety +
30 cm300 mm <br />0.3 m <br /> (350 cm3,500 mm <br />3.5 m <br />) +