Pluchea baccharis

(Miller) Pruski

Sida 21: 2035. 2005.

Common names: Rosy camphorweed
Basionym: Conyza baccharis Miller Gard. Dict. ed. 8, Conyza no. 16. 1768
Synonyms: Pluchea rosea R. K. Godfrey
Treatment appears in FNA Volume 19. Treatment on page 483. Mentioned on page 480.

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). Heads in corymbiform arrays. Involucres campanulate to turbinate-campanulate or turbinate, 4–6 × 5–9 mm (bases obtuse to barely acute). 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). Corollas rose-pink to purplish. Pappi persistent, bristles distinct. 2n = 20.


Phenology: Flowering Jun–Jul.
Habitat: Wet savannas, flatwoods, pond edges, borrow pits, ditches
Elevation: 0–20 m

Distribution

Ala., Fla., Ga., La., Miss., N.C., S.C., Tex., Mexico, West Indies (Bahamas), Central America (Belize, Honduras, Nicaragua).

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.

Selected References

None.

Lower Taxa

None.
... more about "Pluchea baccharis"
Guy L. Nesom +
(Miller) Pruski +
Conyza baccharis +
Rosy camphorweed +
Ala. +, Fla. +, Ga. +, La. +, Miss. +, N.C. +, S.C. +, Tex. +, Mexico +, West Indies (Bahamas) +, Central America (Belize +, Honduras +  and Nicaragua). +
0–20 m +
Wet savannas, flatwoods, pond edges, borrow pits, ditches +
Flowering Jun–Jul. +
Pluchea rosea +
Pluchea baccharis +
species +