SAXIPRAGACE^ 57 



16. RISES, Linnaeus, 

 § 1. More or lesa thorny and prickly: leaves 3-5-lobed, parted or divided: peduncles 1-5- 

 flowered (5-9-flowered in No. 10), (Oooseberries.) 



Calyx bright red: fruit bristly or prickly 1, 2, 4 



Calyx yellow: leaves very small: fruit smooth 5, 7 



Calyx white or pinkish, lobes erect: ovary white-villous; fruit velvety 6 



Calyx greenish, villous: stamens short: fruit spiny-prickly 3 



Calyx greenish or dull-purplish: ovary and fruit smooth 8, 9 



Calyx greenish white, limb saucer-shaped, 3 lines broad: stamens short 10 



§ 2. Thornless, no prickles: stamens short: berry not prickly. (Currants.) 



Calyx greenish white, rotate above the ovary: berry J-1 in. long, black 11 



Calyx waxy-white, greenish or pinkish; tube cylindrical, ^-| in. long 12 



Calyx dull white, greenish or pixrplish; tube cylindrical-campanulate 13 



Calyx rose-red to nearlj' white; tube short, broad: racemes dense: fruit dry 14 



Calyx golden yellow, salverform; tube ^-^ in. long: spicy-fragrant 15 



1. R. speciosum, Pursh. Tall: Flowers nearly an inch long, parts often in 4'8. 



2. R. Menziesii, Pursh. Very thorny: anthers sharp-sagittate. 



3. R. ambiguxun, Watson. Glandular, villous: white petals nearly as long as the 

 stamens. 



4. R. liObbii, Gr. Flowers 9 lines long: anthers oval: very obtuse, white. 



5. R. leptanthum, Gr. Rigid, much branched: style undivided, smooth. 



6. R. velutinum, Greene. Rigid recurved branches: stout thorns solitary. 



7. R. quercetorum, Greene. Calyx-lobes ciliate, reflexed, bright yellow. 



8. R. divaricatum, Dougl. Stems widely spreading: stamens exserted. 



9. R. oxycanthoides, L. gimilar: flowers smaller; stamens little exserted. 



10. R. lacustre, Pi iret. var. molle, Gr. Low: leaves downy: berry light red. 



11. R. bracteosum, Dougl. Leaves 5-7-cleft, lobes acute, 5-9 in. wide. 



12. R. cereum, Dougl. Leaves 3-lobed, an inch broad or less, crenate. 



13. R. viscosissimum, Pursh. Viscid: leaves moderately lobed. 



14. R. sanguineum, Pursh. Leaves obtusely 3-5-lobed: petals often white: variable, 



15. R. aureum, Pursh. Glabrous or nearly so: racemes 5-10-flowered. 



CRASS CLACEiE. 



Obscure under herbs: minute greenish flowers in the axils of minute leaves 1 



Very fleshy herbs: leaves entire (serrate in 1st sp. No. 2): petals distinct 2 



petals more or less united. . . 8 



1. TILL.aJA, Linnajus. 

 1. T. minima, Miers. Flowers clustered iu the axils: leaves ovate, a line long. 



