Mearns New Species of Poisonous Sumachs. 149 



from the sarcocarp and disappeared. The surface of the indurated sar- 

 cocarp conforms to that of the endocarp, appearing quite smooth in 

 Rhus toxicodendron (fig. 4) globosely lobed (like a canteloupe) in JR. lit- 

 tvralis, (fig. 3) and R. floridana (fig. 2), and flattened (like a peach-stone) 

 in R. radicans (fig. 1). 



Rhus floridana sp. nov. 



FLORIDA SUMACH. 



Type. No. 387,083 U. S. National Herbarium; collected by A. 8. 

 Hitchcock, at Alva, Lee County, Florida. Sheet consisting of two twigs 

 with leaves and fruitage. 



Description. Similar to Rhus littoralis, but with leaves much thinner 

 and smoother, and with drupe (pi. Ill, fig. 2) much smaller, with epicarp 

 shining and glabrous. Flowers small, green, in loose axillary panicles. 

 Petioles as in R. littoralis. Entire plant not seen. 



