172 OHIO BIOLOGICAL SURVEY 



Linaceae. Flax Family. 



773. Linuni iisitatissiinum L. Common Flax. Rather general. In- 



troduced. 



774. Linum perenne L. Perennial Flax. Escaped in Lake County. 



775. Linum virginiauum 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. Lnpatiens pallida Nutt. Pale Touch-me-not. General. 



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



abundant. 



Rutaceae. Rue Family. 



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



ern Ohio as far east as Huron and Licking Counties. 



781. Ptelea trifoliata L. Ploptree. General. 



Simarubaceae. Ailanthus Family. 



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



duced. 



Polygalaceae. IMilkwort Family. 



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



784. Polygala verticillata 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 Milk^rort. 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. Stai-k County. 



Euphorbiaceae. Spurge Family. 



790. Phyllantluis earolinensis Walt. Carolina Phyllanthus. Hamil- 



ton, Warren. 



791. Croton capitatus Mx. Capitate Croton. Hamilton, Franklin. 



