DICOTYLEDONES : POLY PETALS : THALAMIFLOFJ!. 609 



Order 2. TAMARICACEJ;. Flowers 4- or 5-merous, with one or 

 two whorls of stamens : calyx gamosepalous : ovary usually tri- 

 merous, unilocular, with basal or parietal placentation : capsule 

 loculicidal : seeds with hairs : flowers in racemes or spikes. 



This order includes the shrubs known as Tamarisks : Myricaria, Tamarix, 

 Keaumuria, and Fouquiera. Myricaria (Tamarix} germanica has monadelphous 

 stamens. Tamarix gallica (or T. anglica) has become naturalised in England. 



Closely allied with this order and with the Elatinacea is the small order of 

 FBANKENIACE^E ; the flower resembles that of Tamarix in the gamosepalous 

 calyx and in the morphology of the gynaeceum : Frankenia Icevis, the Sea-Heath, 

 occurs in salt marshes in Britain. 



Order 3. ELATINACE^;. Small water-plants, with entire stipulate 

 leaves opposite or in whorls : flowers 3-4-merous ; formula IiTii, 

 On, A 11 + n, G ( ^ ; solitary, without bracteoles, borne in the axils of 

 the foliage-leaves : ovary multilocular. 



E. hexandra and Hydro piper (Waterworts, or Water-peppers) occur, but not 

 commonly, on the margins of lakes in England. 



Order 4. TERNSTRCEMIACEJE. Perianth spiral ; the calyx is not 

 clearly distinguishable from the numerous bracteoles : stamens in- 

 definite : ovary multilocular. Trees or shrubs with scattered, 

 generally coriaceous, entire leaves, without stipules. 



Camellia japonica is a favourite ornamental shrub : The. a cMnensis, of which 

 the dried leaves are tea ; black and green tea are varieties resulting only from 

 the mode of drying the leaf. 



Order 5. CLUSTACE^ (GUTTIFERJ:). Trees or shrubs with di- 

 clinous flowers. 



Order 6. DIPTEROCARPACEJ;. Trees: leaves usually stipulate: 

 the gamosepalous calyx enlarges very much during the ripening of 

 the fruit. 



Dnjobalanops Camphora, a native of Sumatra, yields the Borneo Camphor. 



Cohort VII. Mai vales. Flowers cyclic, generally pentamerous 

 and actinomorphic : calyx often gamosepalous, with valvate eesti- 

 vation : corolla with usually contorted aestivation : stamens typi- 

 cally in two whorls, frequently obdiplostemonous, sometimes 

 branched, and often connate : carpels usually five and then anti- 

 petalous, often forming a multilocular ovary: seed usually with 

 endosperm. 



Order 1. TILTACEJ:. Sepals usually free: stamens 10 or 

 indefinite, sometimes polyadelphous; in the indigenous species the 



