50 ROSACEA, (rose family.) 



order few and coherent with each other and adherent to the calyx forming a 2-several 

 celled inferior ovary. 



Nearly all the cultivated fruits of the temperate zones belong to this order. 



Sfb-order 1. AMYGDALE^. 



Carpels solitary, or rarely 5, becoming drupes, entirely free from the calyx, this or its 



lobes deciduous. Trees or shrubs with bark and seeds tasting and smelling like those 



of the peach or cherry. Stipules few, deciduous. 



Flowers perfect; carpel solitary Prunus. 1 



Flowers not all perfect; carpels 5 Nuttallia. 2 



Sub-order 2. ROSACE.ZS Proper. 

 Carpels free from the persistent calyx becoming akenes, follicles or berries. 



§ 1. Carpels few, becoming follicles; calyx open. 



Shrubs; follicles 2 to 8; flowers minute, in panicles Spiraea. 3 , 



Shrubs; follicles 1 to 5; flowers larger, in corymbs Neileia. 4 {. 



§ 2. Carpels several or numerous, on a spongy receptacle, forming a compound 



J)erry Rubus. 5 



§ 3. Carpels one or many, becoming dry akenes. 



Shrubs; solitary, axillary apetalous flowers Cercocarpus. 6 



Herbs; carpels many, on a fleshy receptacle Fragaria. 7 



Herbs; carpels many, on a dry receptacle — 



Stamens 20 to 25 PotentiUa. 8 



Stamens 10 Horkelia. 9 



Shrub: heath-like, with subulate fascicled leaves Adenostoma. 10 



§ 4. Erect shrubs; showy flowers Rosa. 11 



Sub-order 3. POMEiE. 

 Carpels 2 to 5, inclosed in and mostly adnate to the fleshy calyx-tube, in fruit becoming 

 a berry-like pome. Trees or shrubs, with free stipules. 



Stamens 10, in pairs; fruit red Heteromeles. 12 



Stamens 20; fruit black Amelanchier. 13 



1. PRUNUS, Toum. Plum, Cherry, Etc. 

 Calyx 5-cleft, deciduous. Petals 5, spreading. Stamens 15 to 25, inserted with the 



