34 



APPENDIX. 



Strophostyles helvola (L.) Britton. Trailing Wild Bean. Andalusia, I. C. Martin- 

 dale; Tullytown; Bristol. 



Strophostyles umbellata (Muhl.) Britton. Pink Wild Bean. Tullytown; Lang- 

 horne. Dr. E. Newlin Williams; Bristol, I. C. Martindale. 



Order 15. GERANIALES. 

 Family i. Geraniaceae J. St. Hil 



Geranium maculatum L. Wild Crane's-bill. In woods and meadows. 



Geranium Robertianum L. Herb Robert Geranium. Along the Delaware; Argus; 



Rockhill. 

 Geranium columbinum L. Long-stalked Crane's-bill. Tinicum, (M. C). 

 Geranium Carolinianum L. Carolina Crane's-bill. In dry soil. 

 Geranium molle L. Dove's-foot Crane's-bill. Sellersville. 



Family 2. Oxalidaceae Lindl. 



Oxalis violacea L. Violet Wood-sorrel. In moist soil. 



Oxalis stricta L. Upright Yellow Wood-sorrel. In moist soil. 



Oxalis rufa Small. Red Wood-sorrel. Sellersville. 



Oxalis cymosa Small. Tall Yellow Wood-sorrel. In fields and waste ground. 



Oxalis comiculata L. Yellow Procumbent Wood-sorrel. Durham Furnace. 



Oxalis Brittoniae Small. Britton's Wood-sorrel. Sellersville. 



Family 3. Linaceae Dnmort. 



Linum usitatissimum L. Common Flax. In waste places. 

 Linum Virginianum L. Wild Yellow Flax. In woods. 



Linum medium fPlanch") Britton. Stiff Yellow Flax. Three-mile-run: Perkasie. 

 Linum striatum Walt. Ridsred Yellow Flax. Rockhill; Tullytown; Penn Valley; 

 Durham, Harvey F. Ruth. 



Family 4. Rtitaceae Juss. 



Xanthoxylum Americanum Mill. Prickly Ash. Ridge Valley; Argus. 

 Ptelea trifoliata L. Shrubby Trefoil. Ridge's and Stover's islands, Delaware rivef 

 (M. C); above Morrisville, Dr. E. Newlin Williams. 



Family 5. Simarubaceae DC. 



Ailanthus glandulosa Desf. Ailanthus. Tree-of-Heaven. Roadside near Buckingham 

 mountain, Dr. E. Newlin Williams. 



Family 6. Polygalaceae Reichenb. 



Polygala lutea L. Orange Milkwort. Near Bristol, I. C. Martindale. 

 Polvgala cruciata L. Marsh Milkwort. Swamp near Bristol. 

 Polygala verticillata L. Whorled Milkwort. In dry soil. 

 Polvgala ambigua Nutt. Loose-soiked Milkwort. In dry soil. 

 Polygala viridescens L. Purple T^Iilkwort. In fields and meadows. 



