Pluchea sagittalis |
Pluchea camphorata |
|
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wing-stem camphorweed |
camphor pluchea, camphor weed, plowman's-wort |
|
Habit | Perennials, 50–200 cm; fibrous-rooted. | Annuals or perennials, 50–200+ cm; fibrous-rooted. |
Stems | minutely hirtellous to strigillose and sessile-glandular (winged by decurrent leaf bases). |
minutely puberulent and sessile-glandular, usually also closely arachnose (hairs appressed). |
Leaves | sessile; blades usually lanceolate to lance-elliptic (proximal sometimes spatulate or oblanceolate), mostly 5–15 × 1–3(–4) cm, margins shallowly and closely toothed, faces minutely hirtellous to strigillose and sessile-glandular. |
petiolate (petioles 10–20 mm); blades elliptic to oblong-elliptic, 6–15 × 3–7 cm, margins dentate-serrate or entire, faces glandular-puberulent or puberulent and sessile-glandular. |
Involucres | hemispheric to cupulate, 4–7 × 8–10 mm. |
campanulate, 4–6 × 3–4 mm. |
Corollas | white or rose-purple. |
rose purplish. |
Phyllaries | greenish to cream, ± stipitate-glandular (outer oval-oblong to linear-attenuate). |
usually cream, sometimes purplish, minutely sessile-glandular (the outer also sparsely puberulent), sometimes glabrate. |
Heads | in corymbiform arrays. |
in paniculiform arrays (of rounded-convex, corymbiform clusters terminating branches from distal nodes, arrays usually resulting from axillary, strongly ascending, bracteate branches, the central axis longest and first to flower and, rarely, the only component of an array). |
Pappi | persistent, bristles distinct. |
persistent, bristles distinct. |
2n | = 20. |
|
Pluchea sagittalis |
Pluchea camphorata |
|
Phenology | Flowering Jul–Aug. | Flowering Aug–Oct (year-round in south). |
Habitat | Moist or wet, open habitats, ballast deposit areas | Flatwoods, bottomland channels, other wet or moist freshwater habitats |
Elevation | 0–10 m (0–0 ft) | 0–30 m (0–100 ft) |
Distribution |
AL; FL; South America; West Indies [Introduced in North America] |
AL; AR; DE; FL; GA; IL; IN; KS; KY; LA; MD; MO; MS; NC; NJ; OH; OK; PA; SC; TN; TX; VA; WV
|
Discussion | Pluchea sagittalis is adventive, probably a waif; it was collected as a ballast weed by C. Mohr near Mobile (1891, 1894, 1896) and by A. H. Curtiss near Pensacola (1886, 1901). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Pluchea camphorata is similar to P. odorata and rarely may hybridize with it. In P. camphorata, the phyllaries of the inner 2–3 series are thin and nearly translucent, lanceolate, and more than twice as long as deltate-ovate phyllaries of the outer series. The inner may be glandular but they are otherwise glabrous, prominently different in vestiture from the outer. The phyllaries of P. odorata are more strongly graduated and the inner are glandular and also clearly puberulent as well. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 19, p. 480. | FNA vol. 19, p. 481. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Conyza sagittalis, P. quitoc, P. suaveolens | Erigeron camphoratus |
Name authority | (Lamarck) Cabrera: Bol. Soc. Argent. Bot. 3: 36. (1949) | (Linnaeus) de Candolle: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 452. (1836) |
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