| 词条 | Rhamnus alaternus | ||||
| 释义 |
|name = Mediterranean buckthorn |image = Rhamnaceae - Rhamnus alaternus - Alaterno.JPG |image_caption = Leaves and berries |regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Rosids |ordo = Rosales |familia = Rhamnaceae |genus = Rhamnus |species = R. alaternus |binomial = Rhamnus alaternus |binomial_authority = L. |synonyms = * Rhamnus clusii Willd.
}} Rhamnus alaternus is a species of flowering plant in the buckthorn family known by the common name of Italian buckthorn or Mediterranean buckthorn. EtymologyThe genus name derives from the Ancient Greek "rabdos", or “stick” with reference to the presence in many species of woody spine on the end of each twig. The specific Latin name alaternus, assonant with "alternus" or “alternate”, refers to the alternate leaves. DescriptionRhamnus alaternus is an evergreen shrub {{convert|1|-|5|m}} high.[1] The stems have reddish bark and pubescent young branches, rounded and compact foliage with alternating leaves, {{convert|2|-|6|cm}} long,[1] sometimes nearly opposite, oval or lanceolate, leathery, shiny green, yellowish-green underneath. The small fragrant flowers are gathered in a short axillary yellow-green raceme. The flowering period extends from February to April. Fruits are obovoidal red-brownish drupes of about {{convert|3|-|4|mm}},[1] containing from 2 to 4 seeds. The drupes darken to black when ripe. Fruits have medicinal properties and can be used with caution as a laxative. Distribution and habitatThis species is widespread in thermophilic evergreen bush and scrubland of the Mediterranean climate regions, from sea level up to 700 m above sea level.[1] CultivationThis species is cultivated as an ornamental garden shrub, valued for its glossy evergreen leaves and red berries. The variegated cultivar 'Argenteovariegata'[2] has gained the Royal Horticultural Society's Award of Garden Merit.[3][4] Subspecies
GalleryReferences1. ^1 2 3 Pignatti S. - Flora d'Italia – Edagricole – 1982. Vol. II, pag. 78 {{Commons|Rhamnus alaternus}}{{Wikispecies|Rhamnus alaternus a}}2. ^{{cite web|title=RHS Plant Selector - Rhamnus alaternus 'Argenteovariegata'|url=http://apps.rhs.org.uk/plantselector/plant?plantid=1595|accessdate=30 May 2013}} 3. ^{{cite web | url = https://www.rhs.org.uk/plants/pdfs/agm-lists/agm-ornamentals.pdf | title = AGM Plants - Ornamental | date = July 2017 | page = 84 | publisher = Royal Horticultural Society | accessdate = 23 September 2018}} 4. ^{{cite web | url = https://www.rhs.org.uk/plants/pdfs/agm-lists/agm-ornamentals.pdf | title = AGM Plants - Ornamental | date = July 2017 | page = 84 | publisher = Royal Horticultural Society | accessdate = 23 September 2018}}
External links
4 : Rhamnus|Garden plants of Europe|Drought-tolerant plants|Plants described in 1753 |
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