172 OHIO BIOLOGICAL SUBVBY 



Linaceae. Flax Family. 



773. Linuin usitatissimum L. Common Flax. Rather general. In- 



troduced. 



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



775. Linum virginianum L. Virginia Flax. Eastern half of state to 



Erie, Franklin, and Adams Counties. •■ 



776. Lintim medium (Planch.) Britt. StiflE Flax. Erie County. 



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



Balsaminaceae. Jewel-weed Family. 



778. Impatiens 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. Ailantlius Family. 



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



duced. 



Polygalaceae. Milkwort Family. 



783. Polj^gala 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 virideseens L. Purple Milkwort. General. 



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



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



ahoga, Lucas. 



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



Euphorbiaceae. Spurge Family. 



790. Phyllanthus carolinensis Walt. Carolina Phyllanthus. Hamil- 



ton, Warren. 



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



