GENERA OR FAMILIES. 153 



Calyx without 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. 



JJ Fruit dry, receptacle succulent. 



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



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

 lateral near the base of the nut. 



{{J 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. 



f ff Fruit formed of numerous small dry nuts enclosed in 

 the fleshy tube of the calyx, which is contracted at 

 the orifice. 



(89) Eosa 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. 



** Petals 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. 



ft Stamens from twenty to thirty. 



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



