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Ageratina luciae-brauniae
(Fernald) King & H. Rob.
Family:
Asteraceae
Lucy Braun's Snakeroot
[
Eupatorium deltoides
]
FNA
Resources
Guy L. Nesom in Flora of North America (vol. 21)
Perennials,
30-60 cm.
Stems
erect, glabrous.
Leaves
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.
Heads
clustered.
Peduncles
1-3 mm, glabrous or sparsely puberulent.
Involucres
3.5-4 mm.
Phyllaries:
apices acuminate, abaxial faces glabrous or sparsely puberulent.
Corollas
white, lobes glabrous or sparsely puberulent.
Cypselae
sparsely and evenly hirtellous.
2
n
= 34.
Flowering Aug-Oct. Under overhanging sandstone (Pottsville formation) cliffs and ledges; 400-500 m; Ky., Tenn.
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