Flora of North America species comparison

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Pluchea baccharis

rosy camphorweed
Habit Perennials, 40–60 cm; fibrous-rooted, sometimes rhizomatous.
Stems

puberulent to sparsely villous and stipitate- to sessile-glandular (sometimes viscid).
Leaves

sessile;

blades ovate to ovate-oblong or elliptic-oblong, 2–7 × 0.5–3 cm (bases cuneate to truncate or subcordate, clasping to subclasping), margins shallowly apiculate-toothed, faces puberulent to sparsely villous and stipitate- to sessile-glandular (sometimes viscid).
Involucres

campanulate to turbinate-campanulate or turbinate, 4–6 × 5–9 mm (bases obtuse to barely acute).
Corollas

rose-pink to purplish.
Phyllaries

rose-pink to purplish, moderately appressed-villous to puberulous or arachnose, usually viscid-hairy as well (outer phyllaries ovate-acuminate to ovate-lanceolate, lengths 0.5–1 times inner).
Heads

in corymbiform arrays.
Pappi

persistent, bristles distinct.
2n

= 20.

Pluchea baccharis
Phenology Flowering Jun–Jul.
Habitat Wet savannas, flatwoods, pond edges, borrow pits, ditches
Elevation 0–20 m (0–100 ft)
Distribution
from FNA
AL; FL; GA; LA; MS; NC; SC; TX; Mexico; West Indies (Bahamas); Central America (Belize, Honduras, Nicaragua)
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Discussion

Pluchea baccharis has been reported from Arkansas; I have not seen a specimen.

Pluchea rosea var. mexicana R. K. Godfrey, endemic to inland gypseous-saline habitats in east-central Mexico, has been treated at specific rank (G. L. Nesom 1989).

The geographic ranges of Pluchea baccharis and P. foetida are nearly congruent and the taxa intergrade in morphology. The distinction between them is based primarily on corolla and phyllary color. Features of involucral vestiture also appear to be relatively constant. Head size and shape are not reliable diagnostic features.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 483.
Parent taxa Asteraceae > tribe Plucheeae > Pluchea
Sibling taxa
P. camphorata, P. carolinensis, P. foetida, P. longifolia, P. odorata, P. sagittalis, P. sericea, P. yucatanensis
Synonyms Conyza baccharis, P. rosea
Name authority (Miller) Pruski: Sida 21: 2035. (2005)
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Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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