Pluchea baccharis
Pluchea odorata
rosy camphorweed
marsh fleabane, salt marsh fleabane, shrubby camphor-weed, sweet-scented camphorweed, sweetscent
puberulent to sparsely villous and stipitate- to sessile-glandular (sometimes viscid).
stipitate- to sessile-glandular (commonly with eglandular but viscid hairs as well), not arachnose.
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).
petiolate or sessile;
blades (succulent, drying thin) lance-ovate to ovate or ovate-elliptic, mostly 4–15 × 1–7 cm, margins shallowly serrate, faces glabrate to moderately or densely pubescent (hairs crinkly).
campanulate to turbinate-campanulate or turbinate, 4–6 × 5–9 mm (bases obtuse to barely acute).
cylindro-campanulate, 5–6 × 4–8(–10) mm.
rose-pink to purplish.
pink to rosy or purple.
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).
usually cream, sometimes purplish, minutely sessile-glandular (outer usually also puberulent), sometimes glabrate.
in corymbiform arrays.
in corymbiform arrays (flat-topped to rounded, often layered, sometimes incorporating relatively long, leafy, lateral branches, clusters of heads terminal on branches, some lateral branches nearly equaling or surpassing central portions).
persistent, bristles distinct.
persistent, bristles distinct.
= 20.
= 20.
Pluchea baccharis
Pluchea odorata
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.)
Varieties 2 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Involucres 5–6 × 4–6(–7) mm; functionally staminate florets 6–13(–19); plants 20–80(–200) cm | var. odorata |
1. Involucres 5–6 × 7–8(–10) mm; functionally staminate florets (14–)21–34; plants 20–60 cm | var. succulenta |
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