172 OHIO BIOLOGICAL SURVEY 



Linaceae. Flax Family. 



773. Linuin usitatissinuun L. Coinmon Flax. Rather general. In- 

 troduced. 



77-i. Linuin perenne L. Perennial Flax. Escaped in Lake County. 



77"). Linuin virginianum L. Virginia Flax. Eastern half of state to 

 Erie, Franklin, and Adams Counties. 



776. Linum medium (Planch.) Britt. Stiff Flax. Erie County. 



777. Linum sulcatum Ridd. Grooved Flax. Erie County. 



Balsaminaceae. Jewel-weed Family. 



778. Impalieiis pallida Nutt. Pale Touch-me-not. General. 



779. Impatiens biflora Walt. Spotted Touch-me-not. General and 



abundant. 



Rutaceae. Rue Family. 



780. Zanthoxylum americanum Mill. Prickly-ash. General in west- 



ern Ohio as far east as Huron and Licking Counties. 



781. Ptelea trifoliata L. Hoptree. General. 



Simarubaceae. Ailanthus Family. 



782. Ailanthus gladulosa Desf. Tree-of-heaven. General. Litro- 



duced. 



Polygalaceae. Milkwort Family. 



783. Polygahi cruciata L. Crossleaf Milkwort. Gallia, Lucas. 



784. Polygala vertieillata L. Whorled Milkwort. General ; no speci- 



mens from the western part of the state. 



785. Polygala ambigua Nutt. Loose-spiked Milkwort. Rather general. 



786. Polygala viridescens L. Purple Milkwort. General. 



787. Polygala senega L. Seneca Snakeroot. Rather general. 



788. Polygala polygama Walt. Racemed Milkwort. Ashtabula, Cuy- 



ahoga, Lucas. 



789. Polygala pauciflora Willd. Fringed Milkwort. Stark County. 



Euphorbiaceae. Spurge Family. 



790. Phyllanthus carolinensis Walt. Carolina Phyllanthus. Hamil- 



ton, Warren. 

 79L Croton capitatus Mx. Capitate Crotoii. Hamilton, Franklin. 



