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Species
Polygonum hydropiper L. (1753)
IUCN
NCBI
EOL Text
This introduced or adventive plant is a summer annual about 1-2' tall, branching occasionally. It has a tendency to sprawl and lean on adjacent plants for support. The hairless stems are green or red (often the latter). The alternate leaves are up to 3½" long ad ¾" across. They are lanceolate, smooth along the margins, and usually hairless. Their upper surface is often olive-green. Each leaf has a short petiole; the base of this petiole has a membranous sheath (an ocrea) that wraps around the stem. This sheath has a few bristly hairs along its upper rim. The sheaths of adjacent leaves on each stem are about 1-2" apart.
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | Copyright © 2002-2014 by Dr. John Hilty |
Source | http://www.illinoiswildflowers.info/weeds/plants/waterpepper.htm |
Polygonum hydropiper Linnaeus, Sp. Pl. 1: 361. 1753; P. hydropiper var. projectum Stanford
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | eFloras.org Copyright © Missouri Botanical Garden |
Source | http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242100096 |
Flowering class: Dicot Habit: Herb
Polygonum hydropiper L., Sp. Pl. 361. 1753; Hook. f., Fl. Brit. Ind. 5: 39. 1886; excl. var. eglandulosa Hook.f.; Kitamura, Pl. W. Pak. & Afgh. 44. 1964; D.A.Webb & Chater in Tutin et al., Fl. Europ. 1:79. 1964; Coode & Cullen in P.H.Davis, Fl. Turk. 2: 274. 1966; Schiman-Czeika & Rech. f. in Rech. f., Fl. Iran. 56: 60. 1968; R.R.Stewart, Ann. Cat. Vasc. Pl. W. Pak. & Kashm. 1: 206. 1977; P. korrense Nakai in Bot. Mag. Tokyo 33: 6. 1919; Nakai in Mor. Enum. Pl. Cor. 132. 1922.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | eFloras.org Copyright © Missouri Botanical Garden |
Source | http://www.efloras.org/florataxon.aspx?flora_id=5&taxon_id=242100096 |
Barcode of Life Data Systems (BOLDS) Stats
Public Records: 4
Specimens with Barcodes: 9
Species With Barcodes: 1
P. hydropiper occurs throughout most of Europe, including European Russia and east through the Himalayas into China. It also occurs in Africa and has apparently been introduced to North America.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | © International Union for Conservation of Nature and Natural Resources |
Source | http://www.iucnredlist.org/apps/redlist/details/163977 |
Persicaria hydropiper (Linnaeus) Spach; ?P. hydropiper var. diffusa Kitagawa; P. hydropiper var. vulgaris (Meisner) Ohki; P. vernalis Nakai; ?Polygonum hydropiper var. longistachyum Y. L. Chang & S. X. Li; P. hydropiper var. vulgare Meisner; P. schinzii J. Schuster.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | eFloras.org Copyright © Missouri Botanical Garden |
Source | http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200006723 |
Canada
Origin: Unknown/Undetermined
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
United States
Origin: Exotic
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | NatureServe |
Source | http://explorer.natureserve.org/servlet/NatureServe?searchName=Polygonum+hydropiper |