CHAP. I.] MYRTACEvE. 359 



light, appear to be not only full of transparent 

 dots, but to have a transparent line round the 

 margin. The flowers have also abundance of 

 stamens on long slender filaments which look 

 like tufts of silk, and only four or five petals. 

 The whole of the plants are fragrant, and every 

 part of them seems full of an aromatic oil, which 

 is particularly visible in the flower-buds of Caryo- 

 jjhyllus aromaticus, which when dried form what 

 are commonly called cloves ; and in the leaves 

 of some of the kinds of Eucalyptus. The ge- 

 nera may be divided into two sections, viz., 

 those with a dry capsule for the fruit ; in which 

 are included Melaleuca and its allied genera, 

 Eucalyptus, CalUstemon, Metrosideros and Lepto- 

 spermum ; and those with berry-like fruit, the 

 most interesting of which are Psidiimi, the Gu- 

 ava ; Myrfus, the Myrtle ; Caryophyllus, the 

 Clove ; Eugenia or Myrtus pimenta^ Jamaica 

 Allspice ; and Jambosa Vulgaris or Eugenia 

 Jambosa, the Rose Apple. In some of the ge- 

 nera, as for example in Eucalyptus, the sepals 

 of the calyx become detached at the base, and 

 being united above form a sort of cap or calyp- 

 tra, which is pushed off by the stamens when 

 the flower begins to expand. Besides the plants 

 already enumerated, some botanists add another 

 section to Myrtacese, which others consider a 

 separate order, under the name of Lecythidecs. 



