|
:''See also Anchusa class corvette, a former class of Royal Navy ships'' The genus ''Anchusa'' belongs to the tribe Boragineae of the borage family (Boraginaceae). It includes about 40 species. These species grow in Europe, North Africa, South Africa and Western Asia. They are introduced in the USA. They consist of annual plants, biennial plants and perennial plants with the general characteristics of the borage family. They are generally herbs, covered with bristly hairs. The leaves are simple or undulate, covered with stiff hairs. The small radially symmetrical flowers are sapphire blue and retain their colour a long time. The plants show numerous flowers with 5 sepals, united at their bases, and 5 petals forming a narrow tube facing upwards. The flowers grow in several axillary cymes, simple or branched, or are clustered at the end. The flowers are much frequented by bees. The roots of ''Anchusa'' (just like those of ''Alkanna'' and ''Lithospermum'') contain anchusin (or alkanet-red ), a red-brown resinoid colouring matter. It is insoluble in water, but soluble in alcohol, chloroform and ether. ''Anchusa'' species are used as food plants by the larvae of some Lepidoptera species including ''Coleophora onosmella''. == Taxonomy == There are four subgenera : ''Buglossum'', ''Buglossoides'', ''Buglossellum'' and ''Anchusa''. The first two form one subclade, the other two each a separate subclade. The subclade of the subgenus ''Anchusa'' (containing ''Anchusa capensis'') is largely unresolved. If we consider ''Anchusa'' s.l., then it includes the subgenus ''Limbata'', which diverges markedly in its floral morphology. The subgenera ''Buglossum'', ''Buglossellum'' and ''Buglossoides'' clearly need new independent entities, while the subgenus ''Anchusa'' needs a narrower concept. This way taxonomy and phylogeny with respect to ''Anchusa'' can become completely analogous. The following genera are synonyms for Anchusa : ''Buglossum'' Mill., ''Hormuzakia'' Gusul, ''Lycopsis'' L. and ''Phyllocara'' Gusul.. The genus ''Anchusella'' Bigazzi et al. is sometimes included in ''Anchusa''. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Anchusa」の詳細全文を読む スポンサード リンク
|