APPENDIX. 45 



Gentiana Saponaria L. Soap-wort Gentian. Tullytown, Joseph Crawford. 

 Gentiana Andrewsii Griseb. Closed Blue Gentian. In moist ground. 

 Gentiana flavida A. Gray. Yellowish Gentian. Durham, J. A. & H. F. Ruth. 

 Gentiana villosa L. Striped Gentian. Buckingham Valley, C. A. Boice. 

 Obolaria Virginica L. Pennywort. In rich woods. 



Bartonia Virginica (L.) B. S. P. Yellow Bartonia. Andalusia, I. C. Martindale; 

 Bristol; Tullytown. 



Family 3. jMcnyanthaccae G. Don. 



Menyanthes trifoliata L. Buckbean. Swamp near Rockhill. 



Limnanthemum lacunosum (Vent.) Griseb. Floating Heart. Near Bristol, 1. C. 

 Martindale. 



Family 4. Apocynaccac Lindl. 



Vinca minor L. Periwinkle, Bristol; Durham, Ilarvey F. Ruth; New Hope, Dr. E. 



Newlin Williams. 

 Apocynum androsaemifolium L. Spreading Dogbane. In fields and thickets. 

 Apocynum cannabinum L. Indian Hemp. In fields and meadows. 

 Apocynum medium Greene. Intermediate Dogbane. Glenlake, Dr. N. L. Britton. 

 Apocynum album Greene. River-bank Dogbane. In the county, (P. Fl.). 

 Apocynum hypericifolium Ait. Clasping-leaved Dogbane. Along streams. 



Family 5. Asclepiadaceae Lindl. 



Asclepias tuberosa L. Butterfly-weed. Pleurisy-root. In fields. 



Asclepias rubra L. Red Milkweed. Near Bristol. 



Asclepias purpurascens L. Purple Wilkwecd. In fields and thickets. 



Asclepias incarnata L. Swamp Milkweed. In wet meadows and swamps. 



Asclepias pulchra Ehrh. Hairy Milkweed. Swamps, Bristol and Tullytown. 



Asclepias amplexicaulis J. E. Smith. Blunt-leaved Milkweed. Bristol, I. C. Martin- 

 dale; Quakertown, Gottlieb Frey; Tullytown, Joseph Crawford. 



Asclepias exaltata (L.) Muhl. Poke Milkweed. Sellersville; Springfield; Bycot, 

 Albrecht Jahn; New Hope, Dr. Joseph Stokes. 



Asclepias variegata L. White Milkweed. Lower end, I. C. Martindale; Buckingham 

 mountain, and lower Solebury, Dr. E. Newlin Williams. 



Asclepias quadrifolia Jacq. Four-leaved Milkweed. On wooded hillsides. 



Asclepias Syriaca L. Common Milkweed. In rich ground. 



Asclepias verticillata L. Whorled Milkweed. Near Kintnersville. 



Acerates viridiflora (Raf.) Eaton. Green IMilkweed. In dry soil. 



Acerates viridiflora Ivesii Britton. Lance-leaved Green Milkweed. Sellersville. 



Order 5. POLEMONIALES. 

 Family i. Convolvulaccae Vent. 



Quamoclit Quamoclit (L.) Britton. Cypress Vine. In the county, (P. Fl.). 

 Quamoclit coccinea (L.) Moench. Small Red Morning-glory. Sellersville. 

 Ipomoea pandurata (L.) Meyer. Wild Potato Vine. In dry fields. 

 Ipomoea purpurea (L.) Roth. Morning-glory. In waste grounds. 



