46 APPENDIX. 



Thymus Serpyllum L. Creeping Thyme. Near Quakertown, (M. C.); lower end, 



. I. C. Martindale. 

 Cunila origanoides (L.) Britton. Dittany. On hillsides. 

 Lycopus Virginicus L. Purple Bugle-weed. In moist soil. 

 Lycopus Americanus Muhl. Cut-leaved Water Hoarhound. In wet soil'. 

 Lycopus Europaeus L. Water Hoarhound. In waste places. 

 Mentha spicata L. Spearmint. In moist ground. 

 Mentha piperita L. Peppermint. In wet soil. 



Mentha longifolia (L.) Huds. Horse Mint. In the county, (P. El.) 

 Mentha rotundifolia (L.) Huds. Round-leaved Mint. Centre Bridge, (M. C.) ; near 



New Hope, Dr. E. Newlin Williams. 

 Mentha alopecuroides Hull. Woolly Mint. Extensively escaped in the upper end. 

 Mentha gentilis L. Creeping Whorled Mint. Hilltown; Sellersville. 

 Mentha sativa L. Marsh Whorled Mint. New Hope; Point Pleasant; Morrisville, 



Dr. E. Newlin Williams. 

 -Mentha Canadensis L. Wild Mint. In moist soil. 

 Collinsonia Canadensis L. Horse-Balm. In rich woods. 

 Perilla frutescens (L.) Britton. Perilla. Nockamixon, Dr. T. C. Porter. 



Family 8. Solanaceae Pers. 



Physalodes Physalodes (L.) Britton. Apple-of-Peru. Chiefly in lower districts, 

 (M. C). 



Physalis pruinosa L. Tall Hairy Ground-Cherry. Sellersville. 



Physalis Virginiana Mill. Virginia Ground-Cherry. Sellersville; Wycombe. 



Physahs heterophylla Nees. Clammy Ground-Cherry. In rich soil. 



Physalis heterophylla ambigua (A. Gray) Rydberg. Upright Clammy Ground- 

 Cherry. In rich soil. 



Solanum nigrum L. Black Nightshade. In rich soil. 



Solanum Carolinense L. Horse-Nettle. In fields and in waste places. 



Solanum rostratum Dunal. Beaked Nightshade. Sand Bur. Near Perkasie. 



Solanum Dulcamara L. Nightshade. Along fences and in thickets. 



Lycium vulgare (Ait. f.) Dunal. Matrimony Vine. Bristol; Penn Valley. 



Hyoscyamus niger L. Henbane. Sellersville. 



Datura Stramonium L. Jimson-weed. Thorn-Apple. In waste places. 



Datura Tatula L. Purple Thorn-Apple. In waste places. 



Petunia axillaris (Lam.) B. S. P. White Petunia. Sellersville. 



Family 9. Scrophulariaceae Lindl. 



Verbascum Thapsus L. Great Mullein. In fields and waste places. 



Verbascum Lychnitis L. White Mullein. Newtown; Point Pleasant; Durham, Har- 

 vey F. Ruth; Malta island, Dr. E. Newlin Williams. 



Verbascum Blattaria L. Moth Mullein. In fields and waste places. 



Cymbalaria Cymbalaria (L.) Wettst. Kenilworth Ivy. Carversville, Point Pleasant; 

 New Hope, Buckingham, and Wrightstown, Dr. E. Newlin Williams. 



Kickxia Elatine (L.) Dumont. Prostrate Toad-Flax. Near Quakertown, (M. C.) 

 lower end. I. C. Martindale: near Doylestown. 



Linaria Linaria (L.) Karst. Yellow Toad-Flax. In fields and waste places. 



