32 SPRING FLOWERS. 



11. Rosaceous Plants. RosACEie. 



* Petals four or Jive. 



t JEhruit a solitary drupe ; (calyoc deciduous). 



(39) PnuiTis — ovary of one free carpel containing two ovules, 



becoming a succulent fruit enclosing a bard stone contain- 

 ing usually one seed. 



tt Fruit consisting of numerous small nuts or drupes; 

 (calyx persistent) . 



(40) Fragaria — fruit dry, on a succulent receptacle. 



(41) Potentilla — fruit and receptacle both dry. 



** Petals none. 



(42) Alchemilla — calyx double, eight-parted the four outside 



divisions smaller ; stamens four or fewer. 



12. Pomaceous Plants. PoMACEiE. 



* Calyx-segments large, foliaceous. 



(43) Mespilus — petals large roundish ; fruit turbinate, with the 



upper ends of the carpels exposed ; disk dilated. 



** Calyx-segments small. 



(44) Cratsegus — petals large roundish ; fruit round or oval, with 



1-5 bony 1-2-seeded cells or carpels. 



(45) Pyrus — petals large roundish ; fruit fleshy, with five distinct 



cartilaginous 1-2-seeded cells. 



(46) Cotoneaster — petals small erect; fruit turbinate, its cells 



forming distinct nuts cohering to the inside of the fleshy 

 calyx. 



13. Saxifragaceous Plants. Saxifragace^. 



* Petals five. 



(47) Saxifraga — stamens ten all antheriferous ; styles two ; ovary 



two-celled, superior or partially inferior. 



