Pluchea baccharis |
Pluchea longifolia |
|
---|---|---|
rosy camphorweed |
long-leaf camphorweed |
|
Habit | Perennials, 40–60 cm; fibrous-rooted, sometimes rhizomatous. | Perennials, 60–150(–250) cm; fibrous-rooted. |
Stems | puberulent to sparsely villous and stipitate- to sessile-glandular (sometimes viscid). |
sparsely arachnose. |
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). |
(crowded) sessile; blades oblong to elliptic, lance-ovate, or ovate, mostly 8–20 × 3–7 cm (bases clasping to subclasping), margins coarsely and irregularly toothed, abaxial faces villous and sessile-glandular, adaxial hirtellous and sessile-glandular. |
Involucres | campanulate to turbinate-campanulate or turbinate, 4–6 × 5–9 mm (bases obtuse to barely acute). |
cylindro-campanulate, 9–12 × 6–9 mm (lengths mostly 2 times diams.). |
Corollas | rose-pink to purplish. |
creamy white. |
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). |
creamy white, powdery puberulent, sometimes sparsely glandular (mid phyllaries 2.5–3 mm wide). |
Heads | in corymbiform arrays. |
in corymbiform arrays. |
Pappi | persistent, bristles distinct. |
persistent, bristles basally connate. |
2n | = 20. |
|
Pluchea baccharis |
Pluchea longifolia |
|
Phenology | Flowering Jun–Jul. | Flowering Jun–Oct(–Nov). |
Habitat | Wet savannas, flatwoods, pond edges, borrow pits, ditches | Brackish to fresh swamps, marshes, hammocks, lake shores, ditches, and canals |
Elevation | 0–20 m (0–100 ft) | 0–10 m (0–0 ft) |
Distribution |
AL; FL; GA; LA; MS; NC; SC; TX; Mexico; West Indies (Bahamas); Central America (Belize, Honduras, Nicaragua)
|
FL |
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. | FNA vol. 19, p. 484. |
Parent taxa | Asteraceae > tribe Plucheeae > Pluchea | Asteraceae > tribe Plucheeae > Pluchea |
Sibling taxa | ||
Synonyms | Conyza baccharis, P. rosea | |
Name authority | (Miller) Pruski: Sida 21: 2035. (2005) | Nash: Bull. Torrey Bot. Club 23: 108. (1896) |
Web links |