from The Century Dictionary.
- noun A large genus of plants, type of the order Polygonaceæ and tribe Eupolygoneæ.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Bot.) A genus of plants embracing a large number of species, including bistort, knotweed, smartweed, etc.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- proper noun A taxonomic
genuswithin the family Polygonaceae— including the various knotweeds, smartweeds, and bistort.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun diverse genus of herbs or woody subshrubs of north temperate regions
from Wiktionary, Creative Commons Attribution/Share-Alike License
The dominant herbaceous ground vegetation at higher elevations is composed of hemicryptophytes such as Polygonum amplexicaule, Rumex nepalense, Fragaria nubicola, and Berberis spp. and geophytes such as Polygonatum geminiflorum, Lilium polyphyllum, and Habenaria aitchisonii.
Chenopodium; _Thenna_, a kind of Polygonum; _Hubra-Aloo_,
The wetlands of the Atrato floodplain are of special interest, and Polygonum acuminatum, Montrichardia arborescens, Raphia taedigera and cativo Prioria copaifera are typical species.
Genetic diversity and ecotypic differentiation in arctic and alpine populations of Polygonum viviparum.
The silver lace vine, Polygonum aubertii hacked back to the ground in several attempts at eradication has become a waterfall of white along the back property line, out of the reach of the loppers.
On the alpine slopes or in sheltered ravines, Salix denticulata, Mertensia tibetica, Potentilla desertorum, Juniperus polycarpus, Polygonum viviparum, Berberis pachyacantha, Rosa webbiana, and Spiraea lycoides dominate.
Research plots have been set up to determine the best way to control the spread of the tall smothering Himalayan knotweed Polygonum polystachium without damaging other plants or the surface of the soil.
The dominant herbs of this zone are Potentilla atrosanguinea, Geranium wallichianum, Fritillaria roylei, Impatiens sulcata, Polygonum polystachyum, Angelica archangelica, Selinum vaginatum.
As many as 30 different species grow, among them Alpine bartsia Bartsia alpina, Alpine bistort Polygonum viviparum, Unalaska fleabane Erigeron humilis and thick-leaved whitlow grass Draba crassifolia.
Characteristic vegetation in this frigid, flooded, saline/alkaline environment consists of Koresia littledalei, Aneurolepidium dasistachyum, and Polygonum sibiricum.