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|Family: Polygonaceae||View Description||Dichotomous Key|
|Genus: Persicaria||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Persicaria hydropiperoides (Michx.) Small
Habit: Perennial herb, rhizomed. Stem: decumbent to ascending, 15--100 cm, glabrous or obscurely strigose distally. Leaf: ocrea 5--20 mm, cylindric, brown, margins truncate, ciliate, bristles (2)4--10 mm, surface glabrous or strigose, not gland-dotted; petiole 0.2--2 cm; blade 5--25 cm, 0.4--3.7 cm wide, linear- to widely lanceolate, glabrous or appressed-hairy on midveins, also on surfaces or not, generally abaxially gland-dotted, adaxial dark blotch 0, base tapered or acute, tip acuminate. Inflorescence: axillary, terminal, erect, generally uninterrupted, 30--80 mm, 2--5 mm wide; peduncle 10--30 mm, glabrous or strigose; bractlets overlapped distally, often not proximally; pedicels ascending, 1--1.5 mm; flowers 2--6. Flower: perianth (1.5) 2.5--4 mm, bell-shaped, +- enlarging, not gland-dotted, pink or white-+- green, lobes 5, obovate, veins prominent or not, not anchor-shaped, tips obtuse to rounded; stamens 8, included or exserted, anthers pink or red; styles 3, fused nearly 1/2. Fruit: included or exserted, 1.5--3 mm, 1--2.3 mm wide, 3-angled, brown to black, shiny, smooth. Chromosomes: 2n=40.
Ecology: Wet banks, shallow water, marshes, moist prairies; Elevation: < 1500 m. Bioregional Distribution: CA-FP, DSon; Distribution Outside California: to eastern North America, Mexico. Flowering Time: Jun--Oct Note: Confused with Persicaria maculosa (see key).
Synonyms: Polygonum hydropiperoides Michx.; Polygonum hydropiperoides var. asperifolia Stanford; Persicaria opelousana (Small) Small; Persicaria paludicola Small
eFlora Treatment Author: Mihai Costea
Jepson Online Interchange
Previous taxon: Persicaria hydropiper
Next taxon: Persicaria lapathifolia
Citation for this treatment: Mihai Costea 2017. Persicaria hydropiperoides, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=37287, accessed on February 21, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 21, 2017.