118 ROSACEJE. (ROSE FAMILY.) 



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

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



Synopsis. 



SUBORDER I. CHRYSOBALANEJE. 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 II. AMYGDALE^. 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 LU. ROSACEJE. Calyx 3 - 5-cleft, the lobes often alte-- 

 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. SPIR2EA. 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. 

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



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



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



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



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



H- -H. 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. 



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



13. RUBUS. Achenia crowded on the conical receptacle. 



+- H- 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. CRATJ2GUS. Fruit of 1 - 5 bony 1-seeded nutlets. 



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



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



