|University of California, Berkeley|
|Directory News Site Map Home|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Annual to shrub [tree]. Stem: nodes swollen or not. Leaf: simple, basal or cauline, generally alternate; ocreae present or 0, generally scarious, persistent or not. Inflorescence: flower clusters in axillary to terminal cyme-, panicle-, raceme-, spike-, umbel- or head-like arrangements, entire inflorescence or main inflorescence branches generally subtended by bracts ("inflorescence bracts"); peduncles present or 0; flower clusters in Eriogoneae-Eriogonoideae subtended by involucre of >= 1 free or ± fused, sometimes awn-tipped bracts ("involucre bracts") or, in Polygonoideae and rarely in Eriogonoideae, not (if bracts completely fused, involucre "tubular"); pedicels in Eriogoneae each often subtended by 2 free, transparent, linear bractlets or in Polygonoideae all subtended by 2+ fused, membranous, wide bractlets. Flower: generally bisexual, small, 1–200 per node; perianth parts 2–6, generally in 2 whorls, free or basally fused, generally petal-like, often ± concave adaxially, often darker at midvein, often turning ± red or ± brown in age; stamens 3 or 6–9 in 2 whorls; ovary superior, 1-chambered, ovule 1, styles 1–3. Fruit: achenes, included in or exserted from perianth, generally 3-angled, ovoid or elliptic, generally glabrous.
48 genera, ± 1200 species: worldwide, especially northern temperate; some cultivated for food (Coccoloba, sea-grape; Fagopyrum, Rheum, Rumex) or ornamental (Antigonon, lovechain; Coccoloba; Muehlenbeckia; Persicaria; Polygonum), a few timbered (Coccoloba; Triplaris). Several (Emex; Fallopia; Persicaria; Polygonum; Rumex) are weeds. [Freeman & Reveal 2005 FNANM 5:216–601] Treatment of genera in Eriogonoideae based on monographic work of James L. Reveal. Involucre number throughout is number (1–many) per ultimate grouping, at tips of ultimate branches; flower number is per flower cluster or involucre, unless otherwise stated. Fagopyrum esculentum Moench not naturalized, considered an historical waif (or garden weed ± presently), therefore not treated. Scientific Editors: Thomas J. Rosatti, Bruce G. Baldwin.
Key to Polygonaceae
Annual, perennial herb, rhizomed or stoloned. Stem: prostrate to erect, ribbed or ± so or not, glabrous or hairy, generally with adventitious roots. Leaf: cauline, alternate, petioled or not; ocrea papery, rarely ± leaf-like, opaque, persistent or disintegrating, glabrous to variously hairy; blade lanceolate or ovate to hastate or sagittate, entire. Inflorescence: axillary, terminal, generally spike-like; flowers 1–14; peduncle present, pedicels present [or 0]. Flower: bisexual or functionally ± unisexual, base not stalk-like; perianth not or ± enlarging, bell-shaped (urn-shaped, rotate), glabrous, gland-dotted or not, green-white, white, pink, or red; perianth parts 4–5, fused 1/4–2/3, outer 2 > inner 2 or 3; stamens 5–8, filaments free, cylindric, thread-like, glabrous, outer fused to perianth tube or not, anthers elliptic to ovate, yellow, pink, or red; styles 2–3, erect to reflexed, free or fused, stigmas head-like. Fruit: included or exserted, brown or dark-brown to black, not winged, discoid, lens-shaped, or 3-angled. Seed: embryo curved.Key to Persicaria
± 100 species: ± worldwide. (Latin: peach, pertaining to; from resemblance of leaves of some species to those of peach)
Unabridged etymology: (Latin: persica, peach, aria, pertaining to; from resemblance of leaves of some species to those of peach)
Annual, rhizomes, stolons 0. Stem: erect, 50–200(250) cm, ± glabrous to hairy, ± ribbed. Leaf: ocrea funnel-shaped, 10–20(25) mm, brown, papery at base, leaf-like distally, margins truncate, ciliate, bristles 1–3 mm, surface strigose, not gland-dotted; petiole 1–9(14) cm; blade 4–25(30) cm, 2–16 cm wide, ovate, scabrous on midveins, strigose to densely hairy especially along veins, not ± gland-dotted, not dark blotched adaxially, base wedge-shaped, tip acute to acuminate. Inflorescence: axillary, terminal, spike-like, nodding or erect, not interrupted, 20–180 mm, 5–20 mm wide; flowers 1–5; peduncle (0)10–50 mm, glabrous, gland-dotted; bractlets not overlapped; pedicels ascending to spreading, 1–5 mm. Flower: perianth ± bell-shaped, 3–4.5 mm, pink to dark pink, not gland-dotted, lobes 5, obovate, margins of same color, veins ± prominent or not, not anchor-shaped, tips obtuse to rounded; stamens 6–8, included or exserted, anthers pink or red; styles 2, fused basally. Fruit: included, 2–3.5 mm, 1.5–3 mm wide, lens-shaped, dark brown to black, shiny to dull, minutely rough.
2n=22. Escaped from cultivation in disturbed places (most likely dispersed by birds); < 1500 m. Sacramento Valley, Outer South Coast Ranges; western and eastern North America; native to Asia. [Online Interchange]
Previous taxon: Persicaria maculosa
Next taxon: Persicaria pensylvanica
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Nov 29 2015
Citation for this treatment: [Author of taxon treatment] 2013. Persicaria, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=37294, accessed on Nov 29 2015
Copyright © 2014 Regents of the University of California
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.
|Geographic subdivisions indicated for the distribution of Persicaria orientalis|| Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
READ ABOUT YELLOW FLAGS
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).
View elevation by latitude chart
| Data provided by the participants of the Consortium of California Herbaria.
View all CCH records
CCH collections by month