Crossword clues for polygonum
The Collaborative International Dictionary
Polygonum \Po*lyg"o*num\, n. [NL., fr. Gr. ? a kind of plant; poly`s many + go`ny the knee, a joint of a plant. So called in allusion to the numerous joints.] (Bot.) A genus of plants embracing a large number of species, including bistort, knotweed, smartweed, etc.
Wiktionary
n. (context botany English) Any of many plants, of the family Polygonaceae, embracing a large number of species, including bistort, knotweed, smartweed, etc.
Wikipedia
Polygonum is a genus of about 220 species of flowering plant in the buckwheat and knotweed family Polygonaceae. Common names include knotweed, knotgrass, bistort, tearthumb, mile-a-minute, smartweed and several others. In the Middle English glossary of herbs Alphita ( 1400-1425), it was known as ars-smerte. There have been various opinions about how broadly the genus should be defined. For example, Buckwheat (Fagopyrum esculentum) has sometimes been included in the genus as Polygonum fagopyrum.
The genus primarily grows in northern temperate regions. The species are very diverse, ranging from prostrate herbaceous annual plants under high to erect herbaceous perennial plants growing up to tall to perennial woody vines growing up to high in trees. Several are aquatic, growing as floating plants in ponds. The smooth-edged leaves range from long, and vary in shape between species from narrow lanceolate to oval, broad triangular, heart-shaped, or arrowhead forms. The stems are often reddish or red-speckled. The small flowers are, pink, white, or greenish, forming in summer in dense clusters from the leaf joints or stem apices.
The genus name is from the Greek poly = "many" and gonu = "knee" or "joint", in reference to the swollen jointed stem.
Polygonum species are occasionally eaten by humans, and are used as food plants by the larvae of some Lepidoptera species - see list. Most species are considered weedy, especially in moist soils in the USA.
Usage examples of "polygonum".
Erysimum pumilum, Gynerium argenteum, Helianthus orygalis, Lactuca sonchifolia, Lilium auratum, Lobelia cardinalis, Onosma taurica, Origanum pulchellum, Phlox, Physalis Alkekengi, Polygonum Brunonis, P.
Russelliana, Ononis rotundifolia, Onosma taurica, Origanum pulchellum, Ourisia coccinea, Phlox, Physalis Alkekengi, Polygonum Brunonis, P.
Ononis rotundifolia, Onosma taurica, Orchis foliosa, Ourisia coccinea, Pentstemons, Physalis Alkekengi, Polygonum cuspidatum, Potentilla fructicosa, Pratia repens, Primula sikkimensis, Ramondia pyrenaica, Ranunculus aconitifolius flore-pleno, Rudbeckia californica, Saponaria ocymoides, Saxifraga longifolia, S.
The CLIMBING BUCKWHEAT, or Black Bindweed, also called Bearbind and Cornbind, is Polygonum Convolvulus (Linn.
By some botanists, the Buckwheat is separated from the Polygonums, receiving the name Fagopyrum esculentum (Moench).
The FALSE BUCKWHEAT, or Arrow-leaved Tear Thumb, is Polygonum sagittarum (Linn.
Miss Rohde (Old English Herbals) says: 'It is interesting to find that Turner identifies the Herba Britannica of Dioscorides and Pliny (famed for having cured the soldiers of Julius Caesar of scurvy in the Rhine country) with Polygonum bistorta, which he observed plentifully in Friesland, the scene of Pliny's observations.