118 ROSACEiE. (rose FAMILT.) 



ovuled. Seeds anatropous, and, with few exceptions, without albumen. 

 Embryo straight, with large and thick cotyledons. Fruit various. 



Synopsis. 



Suborder I. CHRYSOBALANE^. Calyx bractless, free from 

 the solitary ovary. Style single, arising from the base of the ovary. 

 Ovules erect. Fruit a drupe. — Trees or shrubs. Leaves simple. 



1. CHRYSOBALANUS. Calyx-limb persistent. Stone grooved. Low shrubs. 



Suborder 11. AJVIYGDALE^. Calyx bractless, free from the sol- 

 itary ovary. Style single, terminal. Ovules suspended. Fruit a drupe. 

 Leaves simple. 



2. PRUNUS. Calyx-limb deciduous. Stone even, or grooved on the margins. 



Suborder IU. ROSACEA. Calyx 3 - 5-cleft, the lobes often alter- 

 nating with as many bracts, free from the 1 - several ovaries. Style 

 lateral or terminal. Fruit a 1 - 10-seeded follicle, or a 1-seeded ache- 

 nium. — Herbs or shrubs. Leaves mostly lobed or compound. 



* Fruit a 1 - 10-seeded follicle. 



3. SPIR^A. Petals obovate or roundish, imbricated in the bud. 



5. GILLENIA. Petals linear-lanceolate, convolute in the bud. 



* * Fruit a 1-seeded achenium. 

 ■>- Fruiting calyx dry, the lobes mostly valvate in the bud. Achenia few, or numerous and 

 collected into a head. 

 ++ Calyx-tube contracted at the throat (except No. 4). Achenia 1-4. 



4. NETIUSIA. Petals none. Stamens indefinite. Calyx-lobes serrate. 



6. AGRIMONIA. Petals 5. Stamens 5 - 15. Calyx btistly. 



7. SANGUISORBA. Petals none. Stamens 4. Style terminal. 



8. ALCHEMILLA. Petals none. Stamens 1-4. Style lateral. 



^■^ *+ Calyx open, bracted. Stamens and dry achenia numerous, the latter rarely 2-4. 

 = Seeds erect. 



9. GEUM. Style persistent. Achenia numerous. 



10. WALDSTEINIA. Style deciduous. Achenia 2-6. 



= = Seeds suspended or ascending. 



11. POTENTILLA. Receptacle flat or convex, dry. 



12. FRAGARIA. Receptacle conical, enlarged and fleshy in fruit. 



++ ++ 1H. Calyx open, bractless. Stamens and juicy achenia numerous. 



13. RUBUS. Achenia crowded on the conical receptacle. 



H- -1- Calyx-tube fleshy, urn-shaped ; the lobes imbricated in the bud. Achenia numerous, 

 inserted on the receptacle which lines the inside of the calyx-tube. 



14. ROSA. Achenia dry and hairy. Prickly shrubs. 



Suborder IV. POME.E. Calyx including and cohering with the 

 1-5 ovaries, very thick and fleshy in fruit. 



15. CRAT.J;GUS. Fruit of 1 - 5 bony 1-seeded nutlets. 



16. PYRUS. Fruit of 2 - 5 cartilaginous or membranaceous 2-seeded cells. 



17. AMELANCUIEU. Fruit of 3 - 5 two-seeded cells ; seeds separated by a false partition. 



