SAXIFRAGACE^. 125 



Woods and mountains. Hudson's Bay to Penn. W. to Ken. and the Rocky 

 Mountains. May, June. %. — Stem 2—3 feet high, branching, the lower part 

 often prickly. Flowers in pendulous racemes, greenish-white. Berries brown- 

 ish when ripe, usually covered with strong prickles, but sometimes smooth. 



Prickly Gooseberry. 



5. JR. hirtelium Mich. : stem prickly or naked ; subaxillary spines mostly 

 solitary and Very short ; leaves roundish, cordate, 3 — 5-lobed, toothed, pu- 

 bescent beneath ; peduncles very short, deflexed, 1 — 2 flowered ; calyx-tube 

 campanulate, the segments twice as long as the petals; fruit smooth. 

 R. tr^/lorum Big. 



Rocky places. Hudson's Bay to Mass. Alleghany Mountains. PursTi. W. 

 to Lake Superior. May, June. T^ . — Leaves small. Flowers in pendulous ra- 

 cemes, greenish- white. Berries bluish-purple. {Torr. ^ Gr.) 



Rough Gooseberry. 



6. R. rotundifolium Mich. : stem not prickly ; subaxillary spines short, 

 mostly solitary ; leaves roundish, 3 — 5-lobed, incisely toothed, nearly 

 smooth ; peduncles slender, 1 — 2-flowered, smooth ; cafyx cylindrical and 

 narrow ; petals broad-spatulate, clawed ; fruit small, smooth. R. trijlorum 

 Willd. R. gracile Pursh. not of Mich. 



Mountains, woods. Mass. N. Y. W. to the Rocky Mountains. May, June. 

 T7 . — Stem 2 — 4 feet high, with recurved branches, sometimes without spines. 

 Flowers greenish, with a tinge of purple. Berries about as large as the black 

 currant, purple when ripe, finely-flavored. Round-leaved Gooseberry. 



7. R. lacustre Pursh. : stem hispid-prickly ; subaxillary spines weak ; 

 leaves cordate, 3 — 5-parted, the lobes deeply incised ; racemes 5 — 9-flow- 

 ered, loose ; calyx rotate ; fruit small, hispid. R. oxycanthoides var. lacustre 

 Pers. R. oxycanthoides Mich. 



Mountain swamps. N. H. Mass. N. Y. N. to Arct. Amer. W. to Oregon. May, 

 June. I7. — Stem 3 — 4 feet high. Flowers small, greenish-yellow, on pubescent 

 peduncles. Berries dark purple, unpleasant to the taste. Swamp Gooseberry. 



Order LVII. SAXIFRAGACE^E.— Saxifrages. 



Calyx either superior or inferior, 4 — 5-cleft. Petals 5, or 

 none. Stamens 5 — 10, inserted either into the calyx or be- 

 neath the ovary. Disk either hypogynous or perigynous. 

 Ovary 1 or 2 -celled ; styles none ; stigmas sessile on the tips 

 of the lobes of the ovary. Fruit a capsule or berry, with nu- 

 merous minute seeds. — Herbaceous plants, with alternate leaves. 

 Flower stems simple, often naked. 



1. SAXIFRAGA. iww.— Saxifrage. 



(From the Latin, saxum, a stone, and frango, to break ; in allusion to the roots 

 penetrating the crevices of rocks and stones.) 



Calyx 5-parted. Petals 5, entire, with short claws. Sta- 

 mens 10. Capsule with 2-bealis, 2 -celled, many-seeded, open- 

 ing between the beaks. 



1. &'. Virginiensis Mich. : pubescent ; scape mostly naked, corymbose- 



