JO Elatinaceae, Tamaricaceae 



Suborder 2. Tamaricineae. Stamens in whorls 

 or if 00 in bundles. Gynaecmm free on flat flower-axis. 

 Endosperm starchy or absent. 



Fam. 2. Elatinaceae. Usually small plants 

 growing in wet places and rooting at the nodes. Leaves 

 opposite or whorled, stipulate. Flowers small, cyclic, 

 2-5-merous. Sepals and petals each 2-5, imbricate. 

 Stamens in one or two whorls. Ovary 2-5 -loc with 00 

 axile ovules with two integuments. Styles as many 

 as loculi, free. Capside septicidal. 



Only British genus (leaves spathulate) : Elatine. 



Fam. 3. Frankeniaceae. Usually small shrubs. 

 Stems jointed at the nodes. Leaves opposite, exstipulate. 

 Flowers 4-6-merous. Calyx gamosepalous. Petals free, 

 with ligular appendages. Stamens 4-co . Carpels 4-2 

 with 00 ascending ovules on parietal placentae. Style 

 slender. Stigma 2-5-lobed. Capsule dehiscing between 

 placentae. Seeds with endosperm. 



Only British genus (petals 5, usually with appen- 

 dages) : Frankenia. 



*Fam. 4. Tamaricaceae. Herbs or shrubs with 

 minute alternate, entire leaves. Flowers mostly 4-5- 

 merous. Stamens as many as petals or twice as many 

 or 00 in groups. Carpels (5-2). Ovary usually i-loc 

 with 00 basal or parietal ovules. Fmit a capsule. Seeds 

 hairy. 



Tribe Tamarzceae. Flowers racemose. Seeds with 

 apical tuft of hairs. 



Only British genus (stamens free) : *Tamarix. 



Suborder 3. CiSTINEAE. StameJis go , not in bundles. 

 Gynaecium free on flat or convex axis. Endosperm with 

 starch. 



