Rhus


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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

References in periodicals archive ?
Estos indicadores han sido empleados ya para evaluar las inequidades en la distribucion de los RHUS (9,10,16).
A similar RCT from a dermatology clinic of 10 adults with confirmed sensitivity to poison oak or ivy found that topical jewelweed extract didn't improve symptoms of artificially induced Rhus dermatitis.
Rhus coriaria was found to possess fatty acids such as malic acid, linoleic acid, azelaic acid, tetradecanoic acid, 7- hexadecenoic acid, ethyl octadecenoate, palmitic acid, oleic acid, elaidic acid, stearic acid, 11,13-eicosadienoic acid, 11-eicosenoic acid, arachidic acid, behenic acid, and tetracosanoic acid.
001) MRS type x MINERAL type x SPECIES type revealed Rhus with highest Fe in the Esivalu-Kanduyi-Nalondo accessions but lowest in Maseno-Chwele accessions.
In the following case, we first gave the patient Rhus tox, with no beneficial therapeutic effect, then prescribed Mangifera (mango).
Identification of antioxidative components from ethanol extract of Rhus verniciflua Stoke.
PALABRAS CLAVE / Anacardiaceae / Lobadium I Neartico / Rhus / Styphonia / Terebinthifolia / Zona de Transicion Mexicana /
Rhus seeds were recorded in two white-throated sparrows in Angelina County.
There is a tendency for Rhus to produce suckers but use these for propagation in early spring.
When we excluded Rhus data from the analyses, the total density of woody stems still differed among years ([F.
He has carried out the study in collaboration with colleagues from rhus University, rhus University Hospital, and lborg University Hospital.
Take root cuttings from oriental poppies, verbascum, Primula denticulata, Phlox paniculata, rhus and other plants.