APPENDIX. 



Paspalum Muhlenbergii Nash. Muhlenberg's Paspalum. Bristol; Penn Valley. 

 Syntherisma filiformis I.L.) Nash. Slender Finger-grass. In dry soil. 

 Syntherisma linearis ^Krock.) Nash. Small Crab-grass. In waste places. 

 Syntherisma sanguinalis (L.) Dulac. Large Crab-grass. Common. 

 Echinochloa Crus-galli (L.) Beauv. Barnyard Grass. A common weed. 

 Panicum verrucosum Miihl. Warty Panicum, Bristol, Dr. I. S. Meyer. 

 Panicum capillare L. Witch-grass. Tumble Weed. A weed in cultivated fields. 

 Panicum Philadelphicum Bcrnh. Wood Panicum. Nockami.Kon, Dr. Porter; Sel- 



Icrsvillc; Rockhill. 

 Panicum prcliferum Lam. Spreading Panicum. In wet soil. 

 Panicum virgatum L. Tall Smooth Panicum. Along the Delaware, (M. C). 

 Panicum agrostoides Spreng. Agrostis-like Panicum. Wet ground 

 Panicum rostratum Muhl. Beaked Panicum. Moist soil. 

 Panicum depauperatum Muhl. Starved Panicum.. Dry places. 

 Panicum linearifolium Scribn. Narrow-leaved Panicum. Nockamixon, Dr. Porter; 



Perkasie. 

 Panicum dichotomum L. Forked Panicum. Thickets common. 

 Panicum barbulatum Michx. Barbed Panicum. TuUytown; Penn Valley. 

 Panicum nitidum Lam. Shining Panicum. Solliday's island. 

 Panicum unciphyllum Trin. Hairy Panicum. In dry soil. 

 Panicum lanuginosum Ell. Woolly Panicum. Rockhill. 

 Panicum Scribnerianum Nash. Scribner's Panicym. Solliday's island. 

 Panicum xanthophysum A. Gray. Slender Panicum. Tullytown, (P. FL). 

 Panicum sphaerocarpon Ell. Round-fruited Panicum. Bristol; Rockhill. 

 Panicum polyanthes Schult. Small-fruited Panicum. Point Pleasant. 

 Panicum commutatum Schult. Variable Panicum. Rockhill. 



Panicum macrocarpon LeConte. Large-fruited Panicum. Rockhill. 



Panicum Porterianum Nash. Porter's Panicum. Rockhill. 



Panicum pubifolium Xash. Hairy-leaved Panicum. Durham, H. F. Ruth. 



Panicum clandestinum L. Hispid Panicum. In thickets frequent. 



Panicum decoloratum Nash. Purple Panicum Tullytown, E. P. Bicknell. 



Chaetochloa verticillata (L.) Scribn. Fo.x-tail Grass. Bensalem township, I. C. 

 Martindale. 



Chaetochloa glauca (L.) Scribn. Yellow Fox-tail. A common weed. 



Chaetochloa viridis (L.) Scribn. Green Fox-tail. Frequent. 



Chaetochloa Italica (L.) Scribn. Indian Millet. Hungarian Grass. Sellersville; 

 Perkasie. 



Cenchrus tribuloides L. Bur-grass. Hedgehog Grass. Chiefly along the Delaware. 



Zizania aquatica L. Indian Rice. Reed. Along the lower Delaware. 



Homalocenchrus Virginicus (Willd.) Britton. White Grass. In wet places. 



Homalocenchrus oryzoides (L.) Poll. Rice Cut-grass. In swamps and along 

 streams. 



Phalaris arundinacea L. Reed Canary-grass. In moist soil. 



Phalaris Canariensis L. Canary-grass. Bensalem, I. C. Martindale; Sellersville. 



Anthoxanthum odoratum L. Sweet Vernal-grass. In meadows. 



Aristida dichotoma Michx. Poverty-grass. Dry sandy soil. 



Aristida gracilis Ell. Slender Aristida. Dry Soil. 



Aristida purpurascens Poir. Purplish Aristida. Near Point Pleasant. (M. C). 



Stipa avenacea L. Black Oat-grass. Andalusia, I. C. Martindale. 



Oryzopsis melanocarpa Muhl. Mountain Rice. Rocky woods. 



Muhlenbergia sobolifera (Muhl.) Trin. Rock Muhlenbergia. In rocky woods. 



