78 COMMON CANADIAN WILD PLANTS. 



6. HEIT'CHERA, L. ALUM-ROOT. 



1. H. America' na, L. (COMMON ALUM-ROOT.) Stems 2-3 

 feet high, glandular and short-hairy. Flowers small, in a 

 loose' panicle. Petals not longer than the calyx-lobes. 

 Stamens and style exserted. S. W. Ontario. 



2. H. his'pida, Pursh, has larger flowers in a very narrow 

 panicle, and taller stems, with long spreading hairs. Sta- 

 mens short, but soon exserted. N. W. prairies. 



7, CHRYSOSPLE'NIUM, Tourn. GOLDEN SAXIFRAGE. 

 C. America' num, Schwein. A low and delicate smooth 

 herb, with spreading and forking stems. Flowers greenish- 

 yellow, inconspicuous, nearly sessile in the forks. Shady 

 wet places. 



ORDER XXXIV. CRASSULA'CEJE. (ORPINE FAMILY.) 



Succulent herbs (except in one genus), chiefly differing 

 from Saxifragacese in having symmetrical flowers, the sepals, 

 petals and carpels being the same in number, and the 

 stamens either as many or twice as many. 



Synopsis of the Genera. 



1. Pen'thoruni. Not succulent. The carpels united, forming a 5- 



celled pod. 



2. Sedum. Succulent. Carpels distinct. 



1. PEX'TIIORUM, Gronov. DITCH STONE-CROP. 



P. sedoi'des, Gronov. Not succulent. Sepals 5. Petals 

 5, if any ; sometimes wanting. Stamens 10. Pod 5-anghd, 

 5-horned, and 5-celled. Leaves scattered, lanceolate, acute 

 at both ends. A homely weed, with greenish-yellow flowers 

 in a loose cyme. Wet places. (Parts of the flowers occa- 

 sionally in sixes or sevens.) 



2. si:m >i, Tourn. STONE-CROP. ORPINE. 



1. S. acre, L. (MOSSY STONE-CROP.) Leaves very thick 

 and succulent, crowded, very small. Petals yellow. A 

 spreading moss-like plant, which has escaped from culti- 

 vation in many places. Boadsides. 



