APPEXDIX. 



35 



Polygala Nuttallii T. & G. Nuttall's Milkwort. Near Bristol; Tullytown, Joseph 



Crawford. 

 Polygala Senega L. Soncca Snakeroot. Near Bristol, I. C. Martiiidalc; Springfield, 



rare, (M. C). 

 Polygala paucifolia W'illd. Flowering Wintcrgreen. Near Quakertown, Dr. I. S. 



Mover. 



'^ Family 7. Euphorbiaccae J. St. Hil. 



Crotonopsis linearis Michx. Crotonopsis. Bristol, I. C. i^Iartindale, Elias Diffen- 

 baugh. 



Acalypha ostryaefolia Ridd. Hornbeam Three-seeded Mercury. Morrisville, Mr. 

 Lanning. 



Acalypha Virginica L. Virginia Three-seeded Mercury. In thickets. 



Acalypha gracilens A. Gray. Slender Three-seeded Mercury. In thickets. 



Euphorbia hirsuta (Torr.) Wiegand. Hairy Spurge. Tullytown; Nockamixon; Hill- 

 town. 



Euphorbia maculata L. Spotted Spurge. Common throughout. 



Euphorbia nutans Lag. Upright Spotted Spurge. In fields and thickets. 



Euphorbia corollata L. Elowering Spurge. Along the Delaware. 



Euphorbia marginata Pursh. White-margined Spurge. Near Sellersville. 



Euphorbia Ipecacuanhae L. Ipecac Spurge. Penn Valley, Joseph Crawford. 



Euphorbia Lathyris L. Mole Spurge. Escaped in a few places. 



Euphorbia Cyparissias L. Cypress Spurge. In waste grounds. 



Family 8. Callitrichaceae Lindl. 



Callitriche Austin! Engelm. Terrestrial Water-starwort. In damp soil, Sellersville; 



Glenlake. 

 Callitriche palustris L. Vernal Water-starwort. In water, common. 

 Callitriche heterophylla Pursh. Larger Water-starwort. Streams, Rockhill. 

 Callitriche bifida (L.) Morong. Northern Water-starwort. Rockhill township, rare. 



Order 16. SAPINDALES. 

 Family i. Limnanthaceae Lindl. 



Floerkea proserpinacoides Willd. False Mermaid. Bedminster, (M. C); Sellersville; 

 Bensalem, I. C. Martindale. 



Family 2. Anacardiaceae Lindl. 



Rhus copallina L. Dwarf Sumac. In dry soil, not common. 



Rhus hirta (L.) Sudw. Staghorn Sumac. Along the Delawre; Haycock mountain. 



Rhus glabra L. Smooth Upland Sumac. In dry soil. 



Rhus Vernix L. Poison Sumac. In bogs throughout. 



Rhus radicans L. Poison Ivy. Thickets and along fences. 



Family 3. Ilicaceae Lowe. 



Ilex opaca .\'\t. American Holly. Attleborough. Bristol, I. C. Martindale. 

 Ilex glabra (L.) A. Gray. Inkberry. Near Bristol, I. C. Martindale. 



