GENERA OR FAMILIES. 153 



§§ Calyx ivithout external bracts. 



(85) Dryas — calyx 8-9-cleft, in one row ; stamens numerous ; 



fruits numerous, tipped with the persistent hairy styles, 

 which are straight at the extremity. 



(86) Agrimonia — calyx five-cleft, the tube turbinate, armed with 



hooked bristles above, and contracted at the throat • sta- 

 mens fifteen, inserted with the petals into a glandular ring 

 in the throat of the calyx ; nuts two, included in the dry 

 tube of the calyx ; style terminal. 



XX Fruit dry, receptacle succulent. 



(87) Pragaria — calyx ten-parted, in two rows ; stamens nume- 



rous ; receptacle large, succulent, pulpy, deciduous ; style 

 lateral near the base of the nut. 



+++ Fruit succulent, receptacle dry or spongy. 



(88) Rubus — calyx concave or flattish, five-parted ; stamens 



numerous ; styles nearly terminal ; carpels numerous, suc- 

 culent, drupaceous, placed upon a spongy receptacle. 



fff Fruit formed of numerous small dry nuts enclosed in 

 the fleshy tube of the calyx, which is contracted at 

 the orifice. 



(89) Rosa — calyx urceolate, contracted at the mouth, ultimately 



fleshy, five-cleft; stamens numerous, inserted with the 

 petals on the rim of the tube of the calyx. 



** Fetals none. 

 t Stamens four. 



(90) Sanguisorba— calyx four-cleft, with two or three external 



scales at its base, the tube quadrangular ; stamens four, 

 opposite to the segments of the calyx. 



f-f Stamciis from twenty to thirty. 



(91) Poterium— flowers monoecious or polygamous ; calyx four- 



