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DE CANDOLLE'S SYSTEM. 



77. Grossulacea. Bushes with alternate leaves, mem 

 branous stipules, and a plaited vernation, often spiny. Flow- 

 ers in axillary racemes. Calyx superior, 4- or 5-parted, regu- 

 lar. Petals 5, minute. Stamens 5. Ovary inferior, 1 -celled, 

 with 2 parietal placentae. Berry 1 -celled, many-seeded; em- 

 bryo minute, in horny albumen. 



USES. Bibes rubrum is the common garden Currant, B. 

 nigrum the Black Currant, and B. Grossularia the Goose- 

 berry, all well-known fruits. Many have beautiful flowers. 



TYPICAL GENUS. Bibes. 



78. Saxifmgacea. Herbaceous plants. Leaves simple, 

 with or without stipules. Calyx superior or inferior. Petals 

 5, or none. Stamens 5-10, perigynous or hypogynous ; an- 

 thers bursting longitudinally. Disk hypogynous or perigy- 

 nous, rarely consisting of 5 scales. Ovary 1-celled, with two 

 parietal placentae. Styles 2, formed from extended points of 

 the ovary. Fruit membranous, with two divaricating lobes. 

 Seeds numerous, very minute. Embryo taper, in the axis of 

 fleshy albumen. 



USES. Heuchera Americana, and some others, have astrin- 

 gent roots. Many are pretty flowers. 

 TYPICAL GENERA. Saxifraga, Heuchera. 





