315] FLORA OF COLUMBIA AND VICINITY 173 



616. A. arguta Buckl. [A. g/adra argjtta (Buckl) Rob- 

 inson]. Dwarf buckeye. 



Common on roadsides and in upland thickets; usually a 

 shrub. 



Iowa to Nebraska; Missouri to Texas. 



617. A. lutea Wang. \_A. octandra Marsh.: A.flava h\i'\ 

 Sweet buckeye. 



Rich woods in deep ravines; rare. 

 Pennsylvania to Iowa; Georgia to Texas. 



Family 66. BALSAMINACEAE Lindl. Jewell-weed family. 



242. IMPATIENS L. Jewell-weed. 



618. I. aureaMuhl. [/.pallida Nutt], Pale touch-me- 



not. 



Common in damp shaded places and about springs and 

 streams. 



Quebec to Saskatchewan and Oregon; Florida to Mis- 

 souri and Kansas. 



619. I. biflora Walt. [I. fitlva Nutt.]. Spotted touch- 



me-not. 



About streams and springs and in deep ravines; much 

 less frequent than the preceding. 



Newfoundland to Washington and Oregon; Florida to 

 Mississippi and Kansas. 



Order 25. RHAMNALES. 

 Family 67. RHAMNACEAE Dumort. Buckthorn family. 



243. RHAMNUS L. Buckthorn. 



620. R. lanceolata Pursh. Indian cherry. 

 Common on rocky banks and roadsides. 

 Pennsylvania to Iowa and Colorado; Alabama to Texas. 



621. R. cathartica L. Buckthorn. 

 Roadsides near the Providence bridge. 



Europe, Asia and Northern Africa, thence naturalized 

 in many parts of the United States. 



