CLASSIFICATION OF ANGIOSPERMS. 347 



the Anthoph}lli or Mother-clove. The unexpanded flower-buds 

 constitute the drug or spice known as Cloves. (See Caryophyllus.) 



Piijiciita omcinalis is a tree with opposite, lanceolate, acute, 

 petiolate, pellucid-punctate and evergreen leaves. The' flowers are 

 small, white and in axillary racemes. The fruit is used for 

 flavoring and in medicine. (See Pimenta.) 



Not only are ethereal oils obtained from the genera Euca- 

 lyptus, Jambosa and Pimenta already described, but also from 

 other members of the Myrtacege. Oil of Bay or oil of Myrcia 

 is distilled from the leaves of Pimenta acris of the West Indies. 

 The oil consists largely of eugenol, methyl-eugenol, chavicol, 

 methyl-chavicol, citral, phellandrene and myrcene, and is used in 

 the preparation of Bay rum. The fruits of P. acris yield 3.3 per 

 cent, of an oil resembling the leaf oil. 



Cheken leaves are obtained from Eugenia Clieken. They are 

 about 25 mm. long, ovate or rectangular, with entire, somewhat 

 revolute margin, light green, pellucid punctate, aromatic, astrin- 

 gent and bitter. Cheken leaves yield about i per cent, of a volatile 

 oil containing cineol and pinene ; 4 per cent, of tannin ; a volatile 

 alkaloid and a glucoside. 



Oil of Cajeput is obtained from the leaves and twigs of Mela- 

 leuca Leucadcndron, particularly the varieties Cajepiiti and minor 

 of the East Indies. The principal constituents of this oil are 

 cineol, terpineol, pinene, and a number of aldehydes and acid 

 esters. An oil resembling Cajeput oil is obtained from the leaves 

 and flowers of Myrceugenia catnphorata of Chile. 



The leaves of Myrtns communis, a plant extensively cultivated 

 in the Mediterranean countries of Europe, yield a distillate with 

 water known as Ealt d'ange and used as a toilet article. 



The leaves of the following plants are used as substitutes for 

 tea leaves : Myrtns Molincc of Chile, Melaleuca genistcefolia of 

 Australia, and Leptospermum scopariuni and other species of 

 this genus growing in New Zealand. The seeds of Eugenia dis- 

 ticJia are known in the Antilles as Wild coffee. Quite a number 

 of the genera of this family yield edible fruits. Guava or Guay- 

 ava fruit is obtained from Psidium Gnayava of tropical America. 

 Rose apple is the fruit of Jambosa malaccensis, growing in the 

 East Indies and Oceanica. Jambuse berries are derived from 



