Persicaria robustior

(Small) E. P. Bicknell
Bull. Torrey Bot. Club 36: 455. 1909.
Common names: Stout smartweed r enouée robuste
Basionym: Polygonum punctatum var. robustius Small Bull. Torrey Bot. Club 21: 477. 1894
Synonyms: Persicaria punctata var. robustior (Small) Small Polygonum punctatum var. majus (Meisner) Fassett Polygonum robustius
Treatment appears in FNA Volume 5. Treatment on page 584. Mentioned on page 582, 585, 586, 587.

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. 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. 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. Pedicels ascending to spreading, 2–5 mm. 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. Achenes included or apex exserted, dark brown to brownish black, 3-gonous, 2.7–3.6 × 2–2.5 mm, shiny, smooth.

Phenology: Flowering Jul–Oct.
Habitat: Peaty shores, often in water on coastal plain or near coast
Elevation: 0-1500 m


V5 1194-distribution-map.gif

N.S., Ont., Que., Conn., Del., Fla., Ind., Ky., Maine, Md., Mass., Mich., Mo., N.H., N.J., N.Y., Ohio, Pa., R.I., Tex., Va., West Indies, Central America, South America.


Persicaria robustior often is synonymized with P. punctata.

Selected References


Lower Taxa


... more about "Persicaria robustior"
Harold R. Hinds† +  and Craig C. Freeman +
(Small) E. P. Bicknell +
Polygonum punctatum var. robustius +
Stout smartweed +  and r enouée robuste +
N.S. +, Ont. +, Que. +, Conn. +, Del. +, Fla. +, Ind. +, Ky. +, Maine +, Md. +, Mass. +, Mich. +, Mo. +, N.H. +, N.J. +, N.Y. +, Ohio +, Pa. +, R.I. +, Tex. +, Va. +, West Indies +, Central America +  and South America. +
0-1500 m +
Peaty shores, often in water on coastal plain or near coast +
Flowering Jul–Oct. +
Bull. Torrey Bot. Club +
Persicaria punctata var. robustior +, Polygonum punctatum var. majus +  and Polygonum robustius +
Persicaria robustior +
Persicaria sect. Persicaria +
species +