' SAXIFRAGACE^ 59 



1-celled, seeds numerous. Smooth peremiial herbs with entire 

 leaves, and large soUtary flowers on long scape-Uke Stems which often 

 bear a single leaf. 



1. P. paltistris, L. 



Slender, 4-12 in. high, the root leaves broad and usually cordate at the 

 base, stem leaf clasping the stem. Wet places, Man.-Alta. 



2. P. parviflSra, DC. 



More slender than the preceding, about the same height, but with a 

 smaller flower. Stem leaf only slightly clasping, and root leaves ovate, 

 tapering to the base, which is not cordate. Wet places, Man.-Alta. 



3. HEUCHERA. Alum Root. 



Calyx 5-cleft, often oblique; petals 5, slender, spatulate, inserted 

 on the throat of the calyx; stamens 5, inserted on the calyx with the 

 petals; ovary l-ceUed; styles 2, slender; pod 2-beaked. Erect 

 perennial herbs with large, rounded, heart-shaped leaves on long 

 petioles mostly from the root. 



1. H. hispida, Fursh. 



Stems 1-2 ft. high, hispid with long spreading hairs; stamens longer than 

 the petals, exserted; leaves rounded, slightly lobed. Dry prairie, Man.- 

 Alta. 



4. RiBES. CuKBANT, Gooseberry. 



Calyx 5-lobed, often colored, the tube adhering to the ovary; 

 petals 5, small, inserted on the throat of the calyx; stamens 5, 

 alternate with the petals; ovary 1-oelled; styles 2, distinct or united ; 

 fruit a berry with the withered calyx adhering. Low, often prickly 

 shrubs with palmately divided leaves and edible fruit. 



1. R. Cynosbati, L. Prickly Goosebeeky. 



Leaves on long slender petioles with generally 1-3 slender spines just 

 below the axil, nearly orbicular, somewhat pubescent, and rounded or sub- 

 cordate at the base, deeply 3-5-lobed, orenate-dentate dr incised; spines of 

 the stem few or none; flowers green, calyx lobes shorter than the tube; 

 fruit lArge, usually armed with stout prickles. Pembina Mts. and similar 

 locations in Man. 



2. R. ozyacantholdes, L. Smooth Goosebekky. 



Leaves thin and leathery, somewhat glabrous; spines few and long* 

 flowers greenish yellow; stamens equalling the calyx lobes; fruit smooth 

 or armed with a few whitish prickles. Moist places, Man.-Altai 



