Persicaria robustior |
Persicaria meisneriana |
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r enouée robuste, stout dotted smartweed, stout smartweed |
Mexican tearthumb |
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Habit | Plants perennial, 3–20 dm; roots also sometimes arising from proximal nodes; rhizomes present, stolons sometimes present. | |
Stems | ascending, usually branched proximally, scarcely ribbed, glabrous, glandular-punctate; branches sometimes creeping and rooting at nodes. |
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Leaves | ocrea light brown, cylindric, 10–15 mm, chartaceous, base inflated, margins truncate, ciliate with bristles 3–12 mm, surface strigose, glandular-punctate; petiole 0.2–2 cm, glandular-punctate; blade without dark triangular or lunate blotch adaxially, lanceolate to elliptic-lanceolate, 4–20 × 2–4.5 cm, base tapered, margins antrorsely strigose, apex acute to acuminate, faces glabrous or main veins scabrous, glandular-punctate. |
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Inflorescences | terminal and axillary, erect, uninterrupted, 20–80 × 5–10 mm; peduncle 5–40 mm, glandular-punctate; ocreolae usually overlapping, margins eciliate or proximal ones sometimes ciliate with bristles to 1 mm. |
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Pedicels | ascending to spreading, 2–5 mm. |
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Flowers | 2–4 per ocreate fascicle, homostylous; perianth greenish proximally, white distally, glandular-punctate with punctae ± uniformly distributed, slightly accrescent; tepals 5, connate ca.1/3 their length, obovate, 3.2–4.2 mm, veins prominent or not, not anchor-shaped, margins entire, apex obtuse to rounded; stamens 6–8, included; anthers pink or red, elliptic; styles 3, connate proximally. |
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Achenes | included or apex exserted, dark brown to brownish black, 3-gonous, 2.7–3.6 × 2–2.5 mm, shiny, smooth. |
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Persicaria robustior |
Persicaria meisneriana |
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Phenology | Flowering Jul–Oct. | |
Habitat | Peaty shores, often in water on coastal plain or near coast | |
Elevation | 0-1500 m (0-4900 ft) | |
Distribution |
CT; DE; FL; IN; KY; MA; MD; ME; MI; MO; NH; NJ; NY; OH; PA; RI; TX; VA; NS; ON; QC; Central America; South America; West Indies
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FL; GA; LA; SC; TX; Mexico; Central America; South America; West Indies; se Africa |
Discussion | Persicaria robustior often is synonymized with P. punctata. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 2 (1 in the flora). Variety meisneriana has leaves with petioles 0.3–1 cm, blades prominently sagittate to hastate at bases, and ocreae usually moderately to densely pubescent. It is found only in South America (Argentina, Brazil, Paraguay). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 5, p. 584. | FNA vol. 5, p. 578. |
Parent taxa | Polygonaceae > subfam. Polygonoideae > Persicaria > sect. Persicaria | Polygonaceae > subfam. Polygonoideae > Persicaria > sect. Echinocaulon |
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Polygonum punctatum var. robustius, P. punctata var. robustior, Polygonum punctatum var. majus, Polygonum robustius | Polygonum meisnerianum |
Name authority | (Small) E. P. Bicknell: Bull. Torrey Bot. Club 36: 455. (1909) | (Chamisso & Schlechtendal) M. Gómez: Anales Inst. Segunda Enseñ. 2: 278. (1896) |
Web links |