PLANTS OF IOWA 191 



BALSAMINACE^E. JEWEL-WEED FAMILY. 



Impatiens, L. 



2471. I. biflora, Walt. Spotted Touch-me-not. 

 In moist grounds. Common. 



2472. /. aurea, Muhl. Pale Touch-me-not. 



In moist places, but rather less common than the pre- 

 ceding. 



RHAMNACE.E. BUCKTHORN FAMILY. 



Rhamnus, L. 



2473. R. lanceolata, Pursh. Lance-leaved Buckthorn. 

 In moist soil, infrequent. 



2474. R. olnifolia, L'Her. Alder-leaved Buckthorn. 

 In moist ground. 



Ceanothus, L. 



2475. C. americanus, L. New Jersey Tea. 

 Common on dry prairies and ridges. 



2476. G. ovatus, Desf. Small Red-root. 

 Not infrequent. 



2477. C. ovatus pubescens, T. & G. Downy Red-root. 

 Rare. On dry prairie ridges. 



VITACE^. GRAPE FAMILY. 

 VlTIS, L. 



2478. I 7 , labrusca, L. Northern Fox Grape. 

 Not common. 



2479. C. cinerea, Engelm. Downy Grape. 

 Frequent. 



2780. V. vulphia, L. Riverside or Sweet-scented Grape. 



Common wild grape. Very common along streams and 

 ascending slopes. 



2481. T 7 . palmata, Vahl. Missouri Grape. 

 Not common. 



2482. V. aestivalis, Michx. Summer Grape. 

 In thickets, east part of state. 



2482a. V. cordifolia, Michx. Frost Grape. 



Along streams southward; not common. 



