418 



XCII. EHIZOPHORE^J. 



below the top. FRUIT fleshy-membranous, indehiscent, 4-celled and -lobed, side^ 

 rounded or sharp. SEEDS with a finely membranous testa EMBRYO a little arched, 



Callilrifhe. 

 9 flower (mng.). 



Callilriche rema. 



Callilriche. 

 flower, diagram. 



Callilrirhe. 

 <? flower, diagram. 



Callilriche. 



Kipe semi-carpel, 



cut vertically (mag.). 



occupying the axis of a fleshy albumen, and nearly equalling it in length ; cotyledons 

 very short ; radicle superior. 



ONLY GENUS. 



Callitriche. 



Cattitrichcce. were formerly included in Halorayea, which they approach in the aquatic herbaceous 

 stem, the opposite leaves, axillary flowers, 1-ovuled cells, distinct [papillose] styles, [pendulous 

 ovules,] and albuminous embryo ; being separated by the achlamydeous flowers, and fruit of four 

 cocci. They present some remarkable analogies with Euphorbiaceee, in their diclinous achlamydeous 

 involucred flowers, stamens inserted on the receptacle, ovary with 1-ovuled cells, pendulous anatropous 

 ovules, distinct stigmas, fruit of cocci, and albuminous axile embryo ; analogies which have led some 

 modern botanists to consider Callitriche as aquatic Euphorbiacea : they, however, differ in their 4-lobed 

 ovary, and the structure of their seeds. 



Callitrichinecs inhabit stagnant water in Europe and North America [and most other temperate parts 

 of the globe]. They are useless. 



XCII. RlIIZOPHOREjE. 1 



[TREES or SHRUBS, usually quite glabrous ; branches terete, swollen at the nodes. 

 LEAVES opposite and stipulate, rarely alternate and exstipulate (Combretocarpum, 

 Anisophyllea"), petioled, thickly coriaceous, usually quite entire ; stipules inter- 



1 Thia order is omitted in the original. ED. 



