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单词 rhus
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Rhus


rhus

(rʊs) n (Plants) any shrub or small tree of the anacardiaceous genus Rhus, several species of which are cultivated as ornamentals for their foliage, which assumes brilliant colours in autumn. See also sumach
Thesaurus
Noun1.rhus - deciduous or evergreen shrubs and shrubby trees of temperate and subtropical North America, South Africa, eastern Asia and northeastern AustraliaRhus - deciduous or evergreen shrubs and shrubby trees of temperate and subtropical North America, South Africa, eastern Asia and northeastern Australia; usually limited to nonpoisonous sumacs (see genus Toxicodendron)genus Rhusdicot genus, magnoliopsid genus - genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germinationAnacardiaceae, family Anacardiaceae, sumac family - the cashew family; trees and shrubs and vines having resinous (sometimes poisonous) juice; includes cashew and mango and pistachio and poison ivy and sumacshumac, sumach, sumac - a shrub or tree of the genus Rhus (usually limited to the non-poisonous members of the genus)

Rhus


Rhus

 

(sumac), a genus of deciduous and evergreen plants of the family Anacardiaceae. The plants include trees, shrubs, and, less frequently, woody lianas. The monoecious or dioecious plants range in height from 0.5 to 12 m; some individuals reach 20 m in height. The alternate leaves are simple, ternate, or odd-pinnate. The numerous small flowers are unisexual or bisexual and gathered in inflorescences. There are five petals and five sepals. The fruit is a small drupe.

There are about 60 sumac species (according to other data, 250), distributed mainly in North America, Southwest and East Asia, Africa, and Europe. One species, R. coriaria, is found in the USSR, growing on arid rocky slopes of the lower and middle mountain zones in the Crimea, the Caucasus, the western Kopetdag, and the Pamirs. The species yields valuable tanning and dyeing agents. Many other sumac species are used as tanning, medicinal, or ornamental plants. A well-known species is staghorn sumac (R. typhina).

A number of species contain a poisonous juice that causes severe, painful burns; the juice is used in the preparation of highquality lacquers. Most of these species are classified in the separate genus Toxicodendron. The best-known are the East Asian T. verniciferum, which is the source of Japan wax, and T. vernix. In Japan a wax is obtained from the fruits of T. succedaneum.

T. G. LEONOVA

Rhus


Rhus

 [rus] a genus of trees and shrubs, many of them poisonous. Contact with certain species produces a severe dermatitis in sensitive individuals. The most important poisonous species are R. diversilo´ba and R. toxicoden´dron, or poison oak, R. ra´dicans, or poison ivy, and R. ver´nix, or poison sumac. Most species of Rhus are sometimes classified in the genus Toxicodendron. See also poison ivy, oak, and sumac.

Rhus

(rūs, rŭs), A genus of vines and shrubs (family Anacardiaceae) containing various species that are used for their ornamental foliage; formerly used in tanning. Certain poisonous species are classified as Toxicodendron. [L., fr. G. rhous, sumac]

Patient discussion about Rhus

Q. is poison ivy or sumac contagious A. if you scratch the rash and it has open sores,the pus from the sores can spread to other parts of the body and to other people as well,

More discussions about Rhus

RHUS


AcronymDefinition
RHUSRosh Hashanah Under the Stars (religious service; Baltimore Hebrew Congregation; Cockeysville, MD)

Rhus


Related to Rhus: Rhus aromatica, Rhus dermatitis, Rhus typhina, Rhus trilobata, Rhus tox, RUHS, Rhus toxicodendron
  • noun

Synonyms for Rhus

noun deciduous or evergreen shrubs and shrubby trees of temperate and subtropical North America, South Africa, eastern Asia and northeastern Australia

Synonyms

  • genus Rhus

Related Words

  • dicot genus
  • magnoliopsid genus
  • Anacardiaceae
  • family Anacardiaceae
  • sumac family
  • shumac
  • sumach
  • sumac
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更新时间:2024/11/11 14:00:18