Ageratina altissima var. roanensis

(Small) Clewell & Wooten

Brittonia 23: 138. 1971.

Common names: Appalachian white snakeroot
Endemic
Basionym: Eupatorium roanense Small Man. S.E. Fl., 1326. 1933 (as roanensis)
Synonyms: Eupatorium rugosum var. roanense (Small) Fernald
Treatment appears in FNA Volume 21. Treatment on page 550. Mentioned on page 549.

Phyllaries 4–7 mm, apices cuspidate to acuminate.


Phenology: Flowering Jul–Oct.
Habitat: Moist forests, northern red oak, oak-chestnut, cove forests
Elevation: 700–1500 m

Distribution

V21-1392-distribution-map.gif

Ala., Ga., Ky., N.C., S.C., Tenn., Va., W.Va.

Discussion

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

villous +, sparsely +  and glabrous +
not tailed +, truncate +, rounded +  and obtuse +
scarious +
usually ovate +  and lanceolate +
usually terete +  and clavate +
indeterminate +  and determinate +
Guy L. Nesom +
(Small) Clewell & Wooten +
cordate +, usually rounded +  and truncate or obtuse +
enlarged +
Eupatorium roanense +
3(-5)-nerved +
11 cm110 mm <br />0.11 m <br /> (13 cm130 mm <br />0.13 m <br />) +
8 cm80 mm <br />0.08 m <br /> (9 cm90 mm <br />0.09 m <br />) +
4 cm40 mm <br />0.04 m <br /> (11 cm110 mm <br />0.11 m <br />) +
dissected +, lobed +, toothed +  and entire +
ovatelanceolate;usually deltate-ovate;ovate or broadly lanceolate +
2.5cm;8cm +
papillate +  and rugose +
(4-)5-angled;10-ribbed +
Appalachian white snakeroot +
scabrellous +
fusiform +  and prismatic +
fertile +  and bisexual +
Ala. +, Ga. +, Ky. +, N.C. +, S.C. +, Tenn. +, Va. +  and W.Va. +
700–1500 m +
puberulent +, pilose +, hispidulous +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Moist forests, northern red oak, oak-chestnut, cove forests +
indeterminate +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
campanulate +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
short-villous +
lanceolate +  and lance-linear +
2-carpellate +
persistent +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering Jul–Oct. +
2-nerved +  and 0-nerved +
8 +  and 30 +
subequal +  and unequal +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
semiscandent +, ascending +  and erect +
appendaged +  and truncate +
hirsutulous +
papillate +
Eupatorium rugosum var. roanense +
Ageratina altissima var. roanensis +
Ageratina altissima +
variety +
obconic +  and campanulate +
80 cm800 mm <br />0.8 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
50 cm500 mm <br />0.5 m <br /> (80 cm800 mm <br />0.8 m <br />) +
shrub +  and subshrub +