Argyranthemum

摘要

Argyranthemum, or marguerites as they are commonly known, is a genus of frost-hardy to half-hardy evergreen sub-shrubs that are most frequently used in summer bed-.ding or grown in patio pots. A typical marguerite produces white daisies with yellow centres and has finely divided green or glaucous foliage. These white-flowered plants are commonly derived from one of two species - A. frutescens, a low-growing shrub, and A. foeniculaceum, a taller species with more glaucous leaves. But white is not theonly colour available. Argyranthemum flowers can also be yellow or pink. All 24 species of Argyranthemum are found in Ma-cronesia, which includes the Azores, Canary Islands, Cape Verde Isles, the Savage Islands and Madeira. In the wild they are under threat - 22 out of 24 of the species were on the Red List in 1997. But in cultivation they are thriving as a staple summer bedding plant and they are also grown as larger specimens for patio pots and borders, some as standards.