985 A. SAccHARUM Marsh. (Sugar or Rock Maple.) Common. 



986 A. SACCHARUM, VAR. NIGRUM Britton. (Black Sugar Maple.) Peck 



farm, Moscow. 



987 A. SAccHARiNUM L. (White or Silver Maple.) Common along Sus- 



quehanna. 



988 A. RUBRUM L. (Red or Swamp Maple.) Comnion. 



989 A. NEGUNDO L. (Box Elder.) Drinker Street, Dunmore, Summit 



Lake. Not indigenous. 



SAPINDACEAE (Soapberry Family) 

 AESCULUS L. (Horse Chestnut) 

 990 A. HiPPOCASTANUM L. (Common Horse Chestnut.) Common in cul- 

 tivation. Occasional escape. 



BALSAMINACEAE (Touch-Me-Not-Family) 

 IMPATIENS L. (Balsam, Jewelweed) 



991 I. PALLIDA Nutt. Common along Susquehanna. 



992 I. BiFLORA Walt. (Spotted Touch-Me-Not.) Common. 



RHAMNACEAE (Buckthorn Family) 

 CEANOTHUS L. (Red-Root) 

 993 C. AMERicANus L. (New Jersey Tea.) Common in dry woods. 



VITACEAE (Vine Family) 

 PSEDERA Neck. (Virginia Creeper, Woodbine) 



994 P. QUiNQUEFOLiA Greene. Common. 



VITIS L. (Grape) 



995 V. LABRUSCA L. (Northern Fox Grape.) Waverly. Not rare. 



996 V. AESTIVALIS Michx. (Summer or Pigeon Grape.) Opposite Ply- 



mouth. More common in the Wyoming Valley than elsewhere. 



997 V. BicoLOR Le Conte. (Summer Grape.) Monroe County, Prof. 



Porter. 



998 V. CORDIFOLIA Michx. (Frost or Chicken Grape.) Common. 



999 V. vuLPiNA L. (River-Bank or Frost Grape.) Along the Susque- 



hanna. 



TILIACEAE (Linden Family) 

 TILIA L. (Linden, Basswood) 



1000 T. AMERICANA L. (Basswood.) Common. 



1001 T. MiCHAUXii Nutt. Opposite Laurel Line power plant. 



1(X)2 T. HETEROPHVLLA Vent. Taylor woods, Dunmore. Identified by 

 Dr. Sargent. 



50 



