SULLIVANTIA OHIONIS. 39 



cymoso-trichotomis calycibusque glanduloso-pubescenti- 

 bus ; floribus parvis (corolla alba calyce triplo superan- 

 te) ; pedicellis brevibus, fructiferis decurvis. 



S. Ohionis, Torr. &r Gr., I. c. ; Gray, Excurs. to 

 Mount. N. Carol, in Sill. Journ. (^ in Hook. 

 Lond. Journ. Bot., 1. p. 228; Sf Bat. Text- 

 book, ed. 1. /. 38. 



Heuchera, n. sp. } SuUiv. Cat. PL Columbus, Ohio. 

 Saxifraga ? Sullivantii, Torr. Sj- Gr. Fl. N. Amer., 1. p. 575. 



Hab. In comitatu Highland Ohionis, ad declivia 

 rupium calcariarum, in unico loco solum detexit eel. 

 Sullivant. Floret Junio. * 



It is with peculiar propriety that this well marked Saxifragaceous 

 genus bears its present name, since it has been found by no person 

 except Mr, Sullivant, and is, so far as known, restricted to the 

 State of Ohio. Indeed, it has yet been met with at a single local- 

 ity only, in Highland county, on limestone cliffs which border a 

 tributary of the Scioto, where, however, it grows in great abun- 

 dance. The living plants, which Mr. Sullivant several years 

 ago communicated to the Botanic Garden of the University, still 

 continue to flourish on the steep slope of a simple rockwork, along 

 with the allied Boykinia aconitifoUa of Nuttall, the four species of 

 Heuchera indigenous to the United States, Saxifraga erosa, S. Ca- 

 reijana, and an undescribed Saxifrage nearly related to the latter.* 



•' • Saxifraga Caroliniana (sp. nov.) : glanduloso-pubescens ; foliis omnibus ra- 

 dicalibus deltoideis ovatisve grosse dentatis e basi pi. m. iruncata in petiolum margi- 

 natum abrupte angustatis ; scapo paucibractealo paniculato-cymoso effuso ; petalis 



