49 - 



3a. Petals present, purple (2 5 dm. high; summer) 



Live-for-ever, Sedum purpureum. 

 3b. Petals none (3 6 dm. high; summer) 



Ditch Stonecrop, Fenthornm sedoides. 



SAXIFRAGACEAE, the Saxifrage Family 



Herbs or shrubs, with alternate or opposite leaves; petals and 

 sepals each 5, or the petals none; stamens 5 or 10; styles or stigmas 

 24. 



la. Shrubs with lobed leaves (3 15 dm. high; flowers in late 



spring) 2. 

 Ib. Herbs 12. 



2a. Stems thorny 3. 



2b. Stems not thorny (Currant) 8. 



3a. Flowers and fruits in racemes Swamp Currant, Ribes lacustre. 



3b. Flowers and fruit in short clusters (Gooseberry) 4. 



4a. Ovary and fruit prickly and bristly 



Gooseberry, Ribes cynosbati. 



4b. Ovary and fruit smooth, or sometimes a little glandular 5. 



5a. Stamens equaling the ovate calyx-lobes in length, or a very lit- 

 tle longer 6. 

 5b. Stamens distinctly longer than the linear calyx-lobes 7. 



6a. Leaves glabrous beneath, or nearly so 



Gooseberry, Ribes oxyacanthoides. 

 6b. Leaves softly pubescent beneath 



Gooseberry, Ribes oxyacanthoides var. calcicola. 



7a. Flowers, including the stamens, about 15 mm. long 



Gooseberry, Ribes gracile. 

 7b. Flowers, including the stamens, about 8 mm. long 



Gooseberry, R>'bes rotundifolium. 



Sa. Calyx prolonged above the ovary into a tube which is longer 



than the sepals 9. 

 8b. Calyx-tube shorter than the ovary or none 10. 



9a. Flowers greenish-yellow, inconspicuous; calyx-tube narrowly 

 bell-shape Black Currant, Ribes floridum. 



9b. Flowers bright yellow, conspicuous; calyx-tube narrow, with 

 spreading lobes Golden Currant, Ribes aureum. 



lOa. Ovary and berry bristly with glandular hairs 



Skunk Currant, Ribes prostratum. 



lOb. Ovary and fruit smooth, or with sessile glands 11. 



