ROSACE.E. 215 



:ted on a fleshy receptacle Fro.garw. 5 



Calyx bracteolate. Stamens many, styles not elongating, ripe carpels 

 seated on an elevat -d dry receptacle (3*) 



(3*) Stamens and carpels many Potentilla. 6 



Stamens and carpels 5 or rarely 10 Sibbaldia. 7 



(4) ) Flowers regular, calyx-tulje often urceolate, stamens 1 or more. 

 Carpels 1-3, styles terminal ; ovule 1. Achenes sunk in the calyx-tube. 



Herb. (Poteriese) Agrimonia. 8 



Flowers regular. Calyx-tube urceolate. Petals 5. Stamens very numer- 

 ous. Carpels many, free ; ovule 1, pendulous. Achenes included in 

 the fleshy calyx-tube. Shrubs, leaves compound (Rosese)./?ostt. 9 

 ~ i Flowers regular. Calyx-tulxi Incoming fleshy after flowering and 

 Hue-losing the carpels. Stamens numerous. Ovules 2 or more, 

 ascending. Fruit a pome, l>erry or a drupe, with 2-5 Ixmy or 

 coriaceous 1-2-seeded stones. Shrubs or trees, (o) 



(5) Carpels free on the ventral side Cotoniaster. 11 



Carpels more or less entirely connate or single. (6) 



(6) Carpels entirely covered by the receptacle ; the cells, therefore, inside 



of the fruit. (7) 



Carpels upwards free from receptacles ; the cells, therefore, reaching 

 the hole of the fruit. (8) 



(7) Receptacles (axis ) turbinate or urceolate Pyrus, 10 



Receptacles (axis) obconical or funnel- sliaped Rhaphidepis. 14 



(8) Endoearp very thin, membianacecras Eriobotrya, 13 



Endosarp coriaceous Photinia. 12 



1. Pt' units LINN. 



Dicliotomous Key to the Formosan Species. 



(1) Flowers iu a long raceme, leaves punctate acuminately caudate 



Prunm pundata. 



Flowers axillary, clustered or very shortly racemose, or solitary, leaves 

 not punctate - 



