191 



***** Petals Xi^aiitlng, 



11. PARIETARIA. Cal. 4-cleft, inferior. Stam. elastic. 

 Seed invested with tlie elongated calyx. Some flowers 

 without stamens, their calyx remaining unaltered. 



74. SAXGUISORBA. Cal. 4-cleft, superior, coloured. 

 Stam. dilated upward. Cajis. quadrangular, of 1 cell, 

 not bursting. 



78. ALCHEMILLA. Cal. 8-cleft, inferior. Seed 1, or 2, 

 naked. 



Order II. DIGYNIA. Pistils 2. 



79. BUFFONIA. Petals 4^, C^^w. of 2 valves. 5^^/5 2. 

 Alchemilla. Gentiance, Cuscutce. 



Order III, TETRAGYNIA. Pistils, or 

 Stigmas, 4. 



so. ILEX. Cor. wheel-shaped, of 1 or 4 petals. Berry \\\i\\ 

 4 seeds. Styles 0. Some^. barren. 



84. MOENCHIA. Pet. 4. Caps, of 1 cell, and 1 valve, 

 with 8 teeth. Cal. 4-leaved. 



83. SAGINA. Pet. 4. Caps, of 1 cell, and 4 valves. Cal. 



4-leaved. 

 86. RADIOLA. Pet. 4. Caps, of 8 cells, and 8 valves. 



Cal. of 1 leaf, in 1 2 segments. 



85. TILL.EA. Pet. 4, 3 or 5. Caps, several. Seeds 



several. 



81. POTAMOGETON. Pet.^. Cal.O. Seeds 4^, naked, 



sessile. 



82. RUPPIA. Pet. 0. Cal. 0. Seeds 4, stalked. 



Cerastium. 



