GROSSULARIACEAE (GOOSEBERRY FAMILY) 241 



Very similar to the species but petals evident, elliptic-spatulate, as long as 

 the calyx-lobes: as in the species the carpels are immersed in a crest-margined 

 disk which persists at the middle of the mature carpels as an undulate ridge. 

 {Micranthes. amoghssa Small, I.e. 138.) — At high elevations in the Colorado 

 moimtains. 



S2. GROSSULARIACEAE Dumort. Gooseberry Family 



Erect or procumbent branching shrubs with alternate palmately lobed, 

 often ruinous-glandular or viscid leaves; stipules when present adnate to 

 the petiole. Flowers racemose, rarely solitary on 1-2-leayed axillary shoots; . 

 pedicels subtended by a bract and usually bearing 2 bractlets at about the 

 middle. Calyx-tube adnate to the globose ovary and more or less produced 

 above it. Petals 5 or rarely 4, erect, mostly smaller than the calyx-lobes. 

 Stamens equaling the petals in number and alternate with them. Ovary 

 1-celled with 2 parietal placentae; styles 2, more or less united; stigmas ter- 

 minal. Fruit a berry, crowned with the withered remains of the flower. 



1. RIBES L. GOOSEBEBRIEB AND CuRRANTS 



The only genus; characters of the family. 



Sfejms usually armed with spines and often with prickles (setose- 

 hispid); leaves plicate in the bud (Gooseberries; Nos. 5 & 6 

 transitional). 

 ^Racemes 1-4-flowered; calyx-tube cylindrical or campanulate. 

 Spines solitary or wholly wanting, but the stems often setose- 

 hispid. 

 . < Spines short or unequal; setose-hispid or nearly unarmed. 



Leaves glabrate or puberulent; fruit smooth ... 1. R, saxosum. 

 Leaves closely pubescent; fruit hispid . , > , . 2. R. setosum. 

 \ ' Spines long and conspicuous; setae few; leayes glabrate . 3. R. leptanthum, 



, Spines triple, long 4. R. saximontanum. 



; Racemes several-flowered; calyx-tube salverform. 



Leaves finely pubescent; fruit red 5. R. lentum. 



Leaves glabrate; fruit black . . *. ^ ,. . . . . 6. R. parvulum. 

 Stems unarmed (neither thorns nor i)rickles'preseiit) (Ctu-rants.) 

 ; Flowers not yellow; leaves plicate ia the bud. 

 Berry glandular-bristly. 



Leaves glabrous: fruit spherical. 



Calyx-tube salverform 7. R. coloradense. 



Calyx-tube campanulate . . '. . . . 8. R. Wolfii. 

 Leaves pubescent and glandular; fruit ovoid ... 9. R. viscosissimum. 

 Beiry smooth (rarely glandular in No. 12). 

 C£uyx-tube campanulate. 



, Racemes erect or ascending 10. R. Hudsonianum. 



" Racemes drooping 11. R. americanum. 



Calyx-tube cylindrical, with dilated base .... 12. R. cereum. 

 Flowers yellow; leaves convolute in the bud .... 13. R. longiflorum. 



1. Ribes saxosum Hook. Fl. Bor. Am. 1: 231. 1833. Stems simple or 

 branched, sometimes unarmed but Usually more or less prickly and with 

 scattering short spines: leaves from glabrous to finely puberulent, 3-5-lobed; 

 the lobes crenately incised or coarsely toothed; base usually somewhat cor- 

 date: peduncles short, deflexed; peduncles and bracts glabrate or minutely 

 glandular and pubescent: calyx-tube usually glabrous; the lobes reflexed and 

 twice as long as the petals: stamens not longer than the calyx-lobes: berry 

 smooth and often quite large, dark purple. R. divaricatum irriguum and .B. 

 oxyacanthoides. (B. Purpusii Koehne, Deutsche Dendr. 187. 1893; R. inerme 

 Rydb. Mem. N. Y. Bot. Gard. 1: 202. 1900; R. vallicola Greene.)— Our com- 

 monest gooseberry; throughout our range and extending into the Canadian 

 regions. 



2. Ribes setosum Lindl. Trans. Hort. Soc. 7: 243. 1830. A low branched 

 bush: spines usually present, single or paired and spreading; prickles gen-. 



