122 



DE CANDOLLE'S SYSTEM. 



56. Rosaceee. Trees, shrubs, or herbaceous plants. Leaves 

 alternate, usually with conspicuous stipules, more frequently 

 compound than simple. Flowers large, showy, arranged 

 variously, but in most cases terminal. Calyx lined with a 

 disk. Petals equal. Stamens usually indefinite. Carpels 

 solitary or several, disunited or consolidated. Styles distinct, 

 and more or less obliquely placed upon the ovary. Fruit 

 various. Seeds without albumen. Embryo straight. 



Division 1. Rosea. Tube of calyx fleshy, and covering 

 over the achsenia with a false pericarp. 



USES. Fruit astringent. Petals fragrant and astringent. 

 Flowers in all cases beautiful. 



TYPICAL GENUS. Rosa. 



Division 2. Potentillete. Carpels numerous, superior, inde- 

 hiscent. 



USES. Usually gay flowers. The fruit of Fragaria is the 

 Strawberry, of Rubus the Bramble and the Raspberry. The 

 roots of Tormentils and some Geums and Potentillas are 

 astringent, and have been used as febrifuges. 



TYPICAL GENERA. Rubus, Fragaria. 



t> 



1. Spiraea Arancus, flower cut open. 2. A section of an ovary. 3. Part of flower 

 tragamlndica 4. A vertical section of the half-ripe receptacle, covered with 

 carpels. 5. A single carpel. 6. A section of a ripe carpel, with the seed inside 



Division 3. Spiraea. Carpels few, 2-valved. 



USES. Roots of Gillenia emetic, of Spirsea ulmaria tonic. 



TYPICAL GENUS. Spiraea. 



