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发表于 2011-6-9 12:32:31
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找到了英文资料,百度了一下,资料完全不详细,英文俗称dogwood,专业的名字cornus~~中文俗称狗木 太多了,我复制过来
The genus Cornus is a group of about 30-60 species[1] of woody plants in the family Cornaceae, commonly known as dogwoods. Most dogwoods are deciduous trees or shrubs, but a few species are nearly herbaceous perennial subshrubs, and a few of the woody species are evergreen. Several species have small heads of inconspicuous flowers surrounded by an involucre of large, typically white petal-like bracts, while others have more open clusters of petal-bearing flowers. The various species of dogwood are native throughout much of temperate and boreal Eurasia and North America, with China and Japan and the southeastern United States particularly rich in native species.
The dogwoods include the common dogwood (Cornus sanguinea) of Eurasia, the widely cultivated flowering dogwood (Cornus florida) of eastern North America, the Pacific dogwood (Cornus nuttallii) of western North America, the Kousa Dogwood (Cornus kousa) of eastern Asia, and two low-growing boreal species, the Canadian and Eurasian dwarf cornels (or bunchberries), Cornus canadensis and Cornus suecica, respectively.
Depending on botanical interpretation, the dogwoods are variously divided into one to nine genera or subgenera; a broadly inclusive genus Cornus is accepted here, with four subgenera.
Dogwoods have simple, untoothed leaves with the veins curving distinctively as they approach the leaf margins. Most dogwood species have opposite leaves, while a few, such as Cornus alternifolia and C. controversa, have their leaves alternate. Dogwood flowers have four parts. In many species, the flowers are borne separately in open (but often dense) clusters, while in various other species (such as the flowering dogwood), the flowers themselves are tightly clustered, lacking showy petals, but surrounded by four to six large, typically white petal-like bracts.
The fruits of all dogwood species are drupes with one or two seeds, often brightly colorful. The drupes of several species in the subgenera Cornus and Benthamidia are edible, though without much flavor. However, those of species in subgenus Swida are mildly toxic to people, though readily eaten by birds.
Dogwoods are used as food plants by the larvae of some species of butterflies and moths, including the Emperor moth, the Engrailed, the small angle shades, and the following case-bearers of the genus Coleophora: C. ahenella, C. salicivorella (recorded on Cornus canadensis), C. albiantennaella, C. cornella and C. cornivorella, with the latter three all feeding exclusively on Cornus.
果然是山茱萸科的,哈哈~~~厉害 厉害啊! |
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