92 Trans. Acad. Sci. of St. Lows 
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 Branner and Coville (34) 
included 1610 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 534 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, Schooleraft (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). Nuttall’s Journal of Travels Into ‘Arkansa 
Territory (3) 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 
