GROUPS AND ORDERS. 143 



Xt Ovary apocarpous. 



70. Alismaceous plants — herbs; flowers three-petaled, the se- 



pals and petals usually unlike or distinct, regular. 



**# Floioers perfect, icith a dry calyx-lihe luTiorled periantli. 



71. Juncaceous plants — perianth regular, six-leaved, brown. 



*##* Flowers glumaceons, i. e. formed of imhricated chaffy 

 scales or bracts (glumes) . 



72. Cyperaceous plants— herbs ; leaves grassy, with entire 



sheaths ; bracts one to each flower or floret. 



73. Graminaceous plants — herbs ; leaves grassy, with their 



sheaths split on the side opposite the blade ; bracts two to 

 each flower or floret. 



[II.-GENEEA OR FAMILIES.] 



1. Ranuncnlaceous Plants. Ranunculace^. 



* Anthers bursting outwardly. 

 f Climbing shrubs ivith opposite leaves ; (carpels one-seeded.) 



(1) Clematis — sepals 4-5, coloured and petal-like ; petals none. 



ft Herbs with the leaves alternate or radical. 

 X Carpels several, short, one-seeded ; (flowers regular). 



(2) Thalictrum — sepals 4-5 or more, often coloured and petal- 



like ; petals none. 



(3) Adonis — petals 5-10, conspicuous, usually red, without a 



nectariferous pore at their base. 



(4) Ranunculus — petals five, rarely many, usually yellow or white, 



having a nectariferous pore at their base. 



XX Carpels several, many-seeded. 

 § Flowers regular. 



(5) TroUius— sepals 5-15, large, pale yellow, petal-like ; petals 



as many, small, flat, linear. 



