112 ANNUAL REPORT. 



430. humilis, Marshall. ; Prairie Willoiv. 

 481. lucida, Muhl.j Shining Willoiv. 



Populus 



432. tremuloides, Michx.; American Aspen. 



433. monilifera, Ait.; Cotton-ivood. 



CONIFER.^. 



(Pine Family.) 



Pinus 



434. Strobus, L.; White Pine. 

 Juniperus 



435. Virginiana L,; Red Cedar. 



ARAC^. 



(Arum Family.) 



Arissema 



4.36. triphyllum, Ton-.; Indian Turnip. 



437. Dracontium, Schotti Green Dragon. 



Calla 



438. ^a\natn?,L.; .Water Arum. 

 Symplocarpus 



439. foefcidus, Salisb.; Skunk Cabbage. 



Acorus 



440. Calamus, L.; Sweet-Flag. 



TYPHACE^E. 



(Cat TAIL Family.) 

 441 latifolia, L.; Common Cat-tail. 



Sparganium 



442. Simplex, Huds.; Bur-reed. 



NAIADACE^. 



(PoNDWEED Family) 



Potamogeton 



443. amplifolius, Tuck.; Pondweed. 



