| 释义 |
buckthorn
buck·thorn B0528600 (bŭk′thôrn′)n.1. Any of various shrubs or small trees of the genera Rhamnus and Frangula, including several ornamentals, medicinal species such as the cascara buckthorn, and the invasive species R. cathartica.2. See bumelia.
[Translation of New Latin cervī spīna : cervī, genitive of cervus, deer, buck + spīna, thorn.]buckthorn (ˈbʌkˌθɔːn) n (Plants) any of several thorny small-flowered shrubs of the genus Rhamnus, esp the Eurasian species R. cathartica, whose berries were formerly used as a purgative: family Rhamnaceae. See also sea buckthorn[C16: from buck1 (from the spiny branches, imagined as resembling antlers) + thorn]buck•thorn (ˈbʌkˌθɔrn)
n. 1. any of several often thorny trees or shrubs of the genus Rhamnus, of the buckthorn family. 2. a thorny tree, Bumelialycioides, of the sapodilla family, common in the southern U.S., having large clusters of white flowers. [1570–80; translation of New Latin cervi spina] Thesaurus| Noun | 1. |  buckthorn - a shrub or shrubby tree of the genus Rhamnus; fruits are source of yellow dyes or pigmentsbush, shrub - a low woody perennial plant usually having several major stemsgenus Rhamnus, Rhamnus - type genus of the Rhamnaceae: buckthornsbuckthorn berry, yellow berry - fruit of various buckthorns yielding dyes or pigmentsbearberry, bearwood, cascara buckthorn, chittamwood, chittimwood, Rhamnus purshianus - shrubby tree of the Pacific coast of the United States; yields cascara sagradaCarolina buckthorn, indian cherry, Rhamnus carolinianus - deciduous shrub of eastern and central United States having black berrylike fruit; golden-yellow in autumnCalifornia buckthorn, California coffee, coffeeberry, Rhamnus californicus - evergreen shrub of western United States bearing small red or black fruitsalder buckthorn, alder dogwood, Rhamnus frangula - small tree common in Europeredberry, red-berry, Rhamnus croceus - small spiny evergreen shrub of western United States and Mexico with minute flowers and bright red berries | | 2. | buckthorn - any shrub or small tree of the genus BumeliaBumelia, genus Bumelia - deciduous or evergreen American shrubs small trees having very hard wood and milky latexBumelia lycioides, shittim, southern buckthorn, shittimwood, mock orange - shrubby thorny deciduous tree of southeastern United States with white flowers and small black drupaceous fruitblack haw, Bumelia lanuginosa, false buckthorn, shittimwood, chittamwood, chittimwood - deciduous tree of southeastern United States and Mexicobush, shrub - a low woody perennial plant usually having several major stems | | 3. |  buckthorn - an Old World plantain with long narrow ribbed leaves widely established in temperate regionsEnglish plantain, narrow-leaved plantain, Plantago lanceolata, ribgrass, ribwort, ripple-grassplantain - any of numerous plants of the genus Plantago; mostly small roadside or dooryard weeds with elliptic leaves and small spikes of very small flowers; seeds of some used medicinally |
Translationsbuckthorn
buckthorn, common name for some members of the Rhamnaceae, a family of woody shrubs, small trees, and climbing vines widely distributed throughout the world. The buckthorns (several species of the genus Rhamnus) and the jujube (Ziziphus jujuba) are cultivated for their ornamental foliage. The jujube was also used locally and exported for use in confectionery and as a flavoring, now largely replaced by artificial flavorings. The lotus of Tennyson's "Lotus-Eaters" is thought to have been the jujube. Other members of the family yield dyes and a limited amount of lumber, e.g., cogwood, a hardwood. Other American species of Rhamnus are the redberry, the Indian cherry, and, in California, Rhamnus purshiana, which yields the purgative cascara sagrada. Buckthorn is classified in the division MagnoliophytaMagnoliophyta
, division of the plant kingdom consisting of those organisms commonly called the flowering plants, or angiosperms. The angiosperms have leaves, stems, and roots, and vascular, or conducting, tissue (xylem and phloem).
..... Click the link for more information. , class Magnoliopsida, order Rhamnales.  buckthorn buckthornA large shrub whose bark is very strong medicinally and used for killing several species of fungus, candida, staphylococcus, herpes and tumors. Bark must be at least two years old or it’s too strong. Careful! Do not confuse with the very toxic cherry laurel (Prunus caroliniana) which also has blue-black fruit, but the leaves are simpler cherry leaves.Buckthorn the common name of a genus (Rhamnus) of shrubs or small trees of the family Rhamnaceae. The branches are often spiny. The buds have scales. The leaves are opposite or alternate and simple. The flowers are small, unisexual (rarely bisexual), dioecious or polygamous; they grow in axillary clusters, racemes, or panicles. The fruit is berrylike and succulent. The seeds are oval or ovate and are entirely enclosed in a cover (the endocarp). There are more than 140 species of buckthorn in Europe, Africa, Asia, and North America. There are 19 species in the USSR, mainly in the Caucasus, Middle Asia, the southern part of Eastern Siberia, and the Far East. Common buckthorn (R. cathartica) is widely distributed in the European USSR, the Caucasus, Western Siberia (to the Ob’ River), and Middle Asia. Its leaves are rich in vitamin C, and its bark contains tannins. The fruit (as well as the bark of R. imeretina) is used in decoction, extract, or tincture form as a laxative. Buckthorns are good nectariferous plants. Many species are ornamentals. Frangula is often associated with this genus. REFERENCEGrubov, V. I. “Monograficheskii obzor roda Rhamnus L.”Tr. Botanicheskogo in-ta AN SSSR: Seriia 1, 1949, issue 8.S. K. CHEREPANOV buckthorn any of several thorny small-flowered shrubs of the genus Rhamnus, esp the Eurasian species R. cathartica, whose berries were formerly used as a purgative: family Rhamnaceae buckthorn
buck·thorn (bŭk'thōrn), Shrub or tree of family Rhamnaceae, Karwinskia humboldtiana commonly called Coyotillo or Tullidora. Found in arid southwestern U.S. environments; uncharacterized neurotoxin with high toxicity; single intake of just 0.05-0.3% by body weight in plant material; fruit is particularly toxic. Impaired cerebellar and peripheral nerve function is characteristic; clinical signs include hypersensitivity, tremors, abnormal gait, progressing to paralysis especially in hind quarters; pulmonary edema in some cases also. Toxin produces progressive polyneuropathy through segmental demyelination and degenerative changes in axons of peripheral nerves, followed by myodegeneration.
See also: polyneuropathy. buckthorn (bŭk′thôrn′)n.1. Any of various shrubs or small trees of the genera Rhamnus and Frangula, including several ornamentals, medicinal species such as the cascara buckthorn, and the invasive species R. cathartica.2. See bumelia.alder buckthorn A deciduous shrub, the bark of which contains anthraquinones; it has laxative activity and has been used internally by herbalists for constipation, and topically for minor cuts.
Toxicity Prolonged use may evoke a “lazy bowel” syndrome; it should not be used in patients with colitis, haemorrhoids, or gastric ulcers, or in pregnancy or during nursing.buck·thorn (bŭk'thōrn) Shrub or tree offamily Rhamnaceae, Karwinskia humbold tiana, commonly called coyotillo or tullidora. Found in arid southwestern U.S. environments; contains a highly potent neurotoxin.
See also: polyneuropathy
Synonym(s): common buckthorn, waythorn.buckthorn
Related to buckthorn: Sea BuckthornSynonyms for buckthornnoun a shrub or shrubby tree of the genus RhamnusRelated Words- bush
- shrub
- genus Rhamnus
- Rhamnus
- buckthorn berry
- yellow berry
- bearberry
- bearwood
- cascara buckthorn
- chittamwood
- chittimwood
- Rhamnus purshianus
- Carolina buckthorn
- indian cherry
- Rhamnus carolinianus
- California buckthorn
- California coffee
- coffeeberry
- Rhamnus californicus
- alder buckthorn
- alder dogwood
- Rhamnus frangula
- redberry
- red-berry
- Rhamnus croceus
noun any shrub or small tree of the genus BumeliaRelated Words- Bumelia
- genus Bumelia
- Bumelia lycioides
- shittim
- southern buckthorn
- shittimwood
- mock orange
- black haw
- Bumelia lanuginosa
- false buckthorn
- chittamwood
- chittimwood
- bush
- shrub
noun an Old World plantain with long narrow ribbed leaves widely established in temperate regionsSynonyms- English plantain
- narrow-leaved plantain
- Plantago lanceolata
- ribgrass
- ribwort
- ripple-grass
Related Words |