Ageratina luciae-brauniae
Ageratina jucunda
lucy Braun's snakeroot, rockhouse white snakeroot
hammock snakeroot, lesser snakeroot
erect, glabrous.
erect, lax, minutely pilose.
opposite;
petioles 25–70 mm;
blades broadly ovate-deltate, 4–8 × 5–9 cm, (thin, delicate) bases truncate to subcordate, margins coarsely dentate, apices acute to acuminate, abaxial faces glabrous or sparsely puberulent.
opposite;
petioles 7–15(–22) mm;
blades narrowly deltate to rhombic, 2–6(–7) × 1.5–4 cm, (usually subcoriaceous) bases usually cuneate, sometimes truncate to slightly subcordate, margins usually coarsely serrate or incised, sometimes crenate to subentire, apices acute to acuminate, abaxial faces glabrous or hairy on veins.
1–3 mm, glabrous or sparsely puberulent.
2–10 mm, sparsely puberulent.
3.5–4 mm.
2.5–4 mm.
white, lobes glabrous or sparsely puberulent.
white, lobes glabrous or sparsely short-hirtellous.
apices acuminate, abaxial faces glabrous or sparsely puberulent.
apices acute, abaxial faces puberulent to villous-puberulent.
clustered.
clustered.
sparsely and evenly hirtellous.
usually finely hirtellous-strigose on distal 1/3, sometimes glabrous.
= 34.
= 34.
Ageratina luciae-brauniae
Ageratina jucunda
Ageratina luciae-brauniae was treated by A. F. Clewell and J. W. Wooten (1971) as a synonym of A. altissima and regarded by them as “bizarre plants showing extreme signs of etiolation from growing under limestone ledges” (p. 134). B. E. Wofford (1976) observed that greenhouse transplants of both species maintained distinctions that provide rationale for maintaining A. luciae-brauniae at specific rank.
Ageratina luciae-brauniae is in the Center for Plant Conservation’s National Collection of Endangered Plants.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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iNaturalist
USDA Plants Database
