Comments
provided by eFloras
C. B. McDonald (1980) showed that Persicaria hirsuta is closely related to P. setacea and P. hydropiperoides. Hybrids between P. hirsuta and P. setacea have been produced experimentally but appear to be rare in the wild. Although geographically sympatric, the two species generally occupy different habitats. Experimental crosses between P. hirsuta and P. hydropiperoides were unsuccessful (McDonald).
- license
- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
provided by eFloras
Plants perennial, 3-9 dm; roots also often arising from proximal nodes; rhizomes present. Stems decumbent to ascending or erect, branched, without noticeable ribs, brownish-hirsute on internodes. Leaves: ocrea brown to reddish brown, cylindric, 6-12 mm, chartaceous, base sometimes inflated, margins truncate, eciliate or ciliate with bristles 4-7.5 mm, surface hirsute, not glandular-punctate; petiole 0.1(-0.3) cm, hirsute, leaves sometimes sessile; blade without dark triangular or lunate blotch adaxially, ovate to lanceolate, (2-)4-8 × (0.5-)1-2.5 cm, base rounded to cordate, margins strigose to hirsute, apex acute to acuminate, faces sparingly hirsute abaxially and adaxially, midvein usually hirsute abaxially. Inflorescences mostly terminal, erect, interrupted proximally, usually uninterrupted distally, 20-80 × 4-8 mm; peduncle 30-60 mm, hirsute or, sometimes, nearly glabrous distally; ocreolae overlapping distally, usually not overlapping proximally, margins ciliate with bristles 0.4-1.5(-2) mm. Pedicels ascending, 1-2 mm. Flowers 1-3 per ocreate fascicle, homostylous; perianth white to pink, glabrous, not glandular-punctate, nonaccrescent; tepals 5, connate in proximally 1/ 3, obovate, 1.5-2 mm, veins not prominent, not anchor-shaped, margins entire, apex obtuse to rounded; stamens 5, included; anthers red, elliptic to ovate; styles 3, connate proximally. Achenes included or apex exserted, dark brown to brownish black, 3-gonous, 2-2.5 × 1.3-1.8 mm, shiny, smooth. 2n = 20.
- license
- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
provided by eFloras
Ala., Fla., Ga., Miss., N.C., S.C.
- license
- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
provided by eFloras
Sandy soils, open areas in savannahs, pond margins, ditches, often in shallow water; 0-100m.
- license
- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
provided by eFloras
Polygonum hirsutum Walter, Fl. Carol., 132. 1788
- license
- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Persicaria hirsuta: Brief Summary
(
Vietnamese
)
provided by wikipedia VI
Persicaria hirsuta là một loài thực vật có hoa trong họ Rau răm. Loài này được (Walter) Small mô tả khoa học đầu tiên năm 1903.
- license
- cc-by-sa-3.0
- copyright
- Wikipedia tác giả và biên tập viên