318 OHIO BIOLOGICAL SURVEY 



Polygala senega L. Seneca Snakeroot. Fide Bigelow. 



Polygala incarnata L. Pink Milkwort. Fide Bigelow. No authentic specimens are 

 now known froTii Ohio. 



Euphorbiaceae, Spurge Family. 

 Acalypha virginica L. Virginia Three-seeded Mercury. 

 Acalypha graeiliens Gr. Slender Three-seeded Mercury. 



Titythymalus lathrus (L.) Hill. (Euphorbia). Caper Spurge. Known from Hock- 

 ing County only. 

 Titythymalus obtusatus (Pursh) K. & G. Blunt-leaf Spurge. Fide Bigelow. 

 Titythymalopsis corallata (L.) K. & G. (Euphorbia). Flowering Spurge. 

 Chamaesyce preslii (Guss) Arth. (Euphorbia nutans). Nodding Spurge. 

 Chamaesyce maculata (L.) Small. (Euphorbia). Milk Spurge. 



Callitrichaceae, Water Starwort Family. 

 Callitriche sp. Fide Bigelow. 



Malvales. 

 Malvaceae, Mallow Family. 

 .Abutilon abutilon (L.) Rusby (A. theophrasti Medic). Velvet Leaf. Common. 



No specimen. 

 Malva rotundifolia L. Low Mallow. No specimen. 

 Napaea dioica L. Glade Mallow. 

 Sida spinosa L. Prickly Sida. No specimen. 

 Hibiscus militaris Cav. Fide Bigelow. 



Tiliaceae, Linden Family. 

 Tilia americana L. Basswood. 



GutUferales. 

 Hypericaceae, St. John's-wort Family. 



Ascron liyjiericoiiles L. St. Andrew's Cross. 



Hypericum ascyron L. Fide Bigelow. 



Hypericum prolificum L. Shrubby St. John's-wort. 



Hypericum punctatum Lorn. (H. maculatum). Spotted St. John's-wort. Fide 



Bigelow. 

 Hypericum mutilum Tj. Dwarf S. .Tohn 's-wort. 

 Hypericum drummundii (Grev. & Hook.) T." & G. Drummond's St. John's-wort. 



A single stati^on on the top of the cliff overlooking the junction of "The Gulf" 



with the Canyon of Clear Creek, fairly numerous in 1909, less so in 1910 and 



1911. The extreme eastern edge of its range. 

 Sarothra gentianoides L. Orange Grass. Fide Bigelow. 



Cistaceae, Rock-rose Family. 

 Crocanthemum majus (L.) Britt. ( lleliantliemum). Hoary Frost-weed. 

 Lechea minor L. Thyme-leaf Pinweed. 

 Leehea racemubosa Mx. Oblong-fruited Pinweed. 



Violaceae, Violet Famil\\ 

 Cubelium cdiicolor (Forst.) Raf. (Hybanthus). Green Violet. 



