148 UNIVERSITY OF MISSOURI STUDIES [29O 



455. S. Telephium L. Live-forever. 

 Old yards and roadsides. 



Asia and Europe, thence to North America. 



182. PENTHORUML. Stonecrop. 



456. P. sedoides L. Ditch stonecrop. 

 Common in swamps, swales, and wet meadows. 



New Brunswick to Minnesota and South Dakota; 

 Florida to Texas: China and Japan. 



Family 49. SAXIFRAGACEAE Dumort. Saxifrage family. 



183. HEUOHERA L. Alum root. 



457. H. hispida Pursh. Hairy alum root. 



Cliffs and ledges; also common in rocky and hilly thickets. 

 Ontario and Michigan to the Northwest Territory; 

 Virginia to Kansas and Idaho. 



184. RISES L. Currant. Gooseberry. 



458. R. gracile Michx. Smooth wild gooseberry. 

 Rocky thickets and half-wild fields. 



Michigan to South Dakota and Kansas; Tennessee and 

 Louisiana to Texas. 



459. R. Missouriense Nutt. Missouri gooseberry. 

 Very common along streams and in old fields. 

 Pennsylvania to South Dakota; Illinois and Missouri to 



Kansas. 



460. R. Oynosbati L. Prickly gooseberry. 

 Thickets at the Pinnacles. 



New Brunswick to Manitoba; North Carolina to Mis- 

 souri. 



Family 50. PLATANACE-i^E Lindl. Planetree family. 



185. PLATANUS L. planetree. 



461. P. occidentalis L. Sycamore. Buttonwood. 



