DECANDRIA, DIGYNIA. ee 
An American genus, if we exclude H. hortensis of India, 
separated principally on the ground of its producing 3 
styles, which is perhaps occasionally common to every a ® 
Hydrangea, 
405. SAXIFRAGA. ZL. (Saxifrage.) _ 
Calix 5-parted, persistent. Petals 5. 
Leaves alternate, rarely opposite, entire or divided; 
Sometimes all radical; flowers mostly numerous, densely 
or loosely paniculate, in some species nearly solitary. ~_ 
Species. 1.8. Aizoon. 2. stellaris. 3. serpyllifolia. 4, 
“ndrosacea. 5.bronchialis. 6. nivalis, 7. virginica, 8. Geum. 
9. leucanthemifolia. 10. pensylvanica. 11. erosa. Pu. Pa- 
nicle slender ani Sivaringtely prenched, by which it is 
readily distingni from No.10. 12. oppositifolia. Flow- 
ee pi e . 13. aizoides. 14. Ai ser fr 
ris. 16. sibirica. 17. pectinata. 18. cespitesa: 19, tri. 
eushi, 
& 
sule 1-celled, many-seeded, opening betwixt — 
the persistent styles. 3 * 
