92 Trans. Acad, Sci. of St. Louis 



are to be found in the Herbarium of the Missouri Botan- 

 ical Garden, while a complete set of collections of all 

 ligneous species with Palmer numbers is to be found in 

 the Herbarium of the Arnold Arboretum. 



The flora of Arkansas has been largely neglected by 

 botanists during the last thirty-six years. Those who 

 have collected within the State have usually been re- 

 warded by the discovery of many new and rare species 

 of plants. It is safe to predict that as this flora becomes 

 better known very many more additions will be made, 

 and with a more careful and critical study of the material 

 many new species and varieties will be added. 



The Catalogue of Plants by Brainier and Coville (34) 

 included 1010 ferns and seed plants. A small reduction 

 must be made from this list for plants erroneously re- 

 ported or those now represented under new names among 

 our 5o4 additions. However, it may safely be estimated 

 that the known ferns and seed plants of Arkansas now 

 comprise about 2100 species. 



The earliest naturalists to visit and report on the 

 vegetation of the area included in this state, of which 

 there are available records, were Bradbury (1) in 

 1809-11, Schoolcraft (2) in 1818-1819 and Nuttall in 1819. 

 All of these early explorers gave valuable and interest- 

 ing accounts of the geography and vegetation, but the 

 celebrated botanist Nuttall described the vegetation in 

 greatest detail and published valuable contributions in- 

 cluding the descriptions of many new species of plants 

 (4, 5, 7). XuttalPs Journal of Travels Into Arkansa 

 Territory (.'*) is considered a classic in the literature of 

 travel, and this together with his Collection Towards a 

 Flora of the Territory of Arkansas (7), are noteworthy 



