16 Cincinnati Society of Natural History. 



A NORTHERN OCCURRENCE OF 

 DENTARIA MULTIFIDA MUHL. 



By E. Lucy Braun 



In the spring of 1913, the writer found a large patch of 

 Dentaria mnltifida Muhl. {Dentaria laciniaia var. multifida 

 James) growing in a mixed beech woods near Madisonville, 

 a suburb of Cincinnati. This habitat has since been de- 

 stroyed, but plants from the original habitat are growing in 

 the Emery Bird Reserve, and in the writer's garden. 



This plant is not recorded, to my knowledge, as occurring 

 north of the northern boundary of Virginia and Tennessee, 

 and hence is not included in any of the texts dealing with 

 the floras of north-eastern North America. The plants were 

 compared, for verification of identification, with plants in 

 the Lloyd Herbarium, collected on Lookout Mountain, 

 Tenn., by Joseph F. James. The only difference noted is 

 that of size, the more northern plants being only about two- 

 thirds the height of those from Chattanooga 



Although James states (Bot. Gaz. 8:206, 1883 and Jour. 

 Cin. Soc. Nat. Hist. 7:67, 1884) that on Lookout Mountain 

 he found forms intermediate between D. laciniata and 

 D. multifida, the plants found at Cincinnati were very 

 distinct, and no gradational forms were found. 



In this latitude, the plants bloom from the middle to the 

 end of April — two to three weeks later than D. laciniata — 

 and the seeds ripen about the first of June. This is a verj^ 

 beautiful plant, much more delicate and attractive than the 

 other species of Dentaria growing here. 



