140 Rhodora [August 



is based upon Aim penu.sijiranica of Sprengel, as a synonym, with 

 the variety, major {Koelerin fnniratn major of Torrey). 2. Reboulra 

 obfumfa, based upon Aira obiumta Mx. In the second edition of tlie 

 Manual, (iray refers these species to Eaionia following Endlicher 

 who erroneously took up Hafines(pie's name. 



Chapman in 1S()() describes two species with one variety — £a/o«m 

 obtusata (Mx.) and Eaionia prnnsi/lvanira, citing Aira mollis Mnh]. 

 as a synonym which is the plant he describes, with the variety filiformis. 

 In 1,S8() Vasey raised Chapman's E. pennsylvaniva fliformi.s to the 

 rank of a species and published as new Eaionia DudJeyi, which is 

 identical with E. pennsylranica of Chapman and Aira uifida and 

 Aira pemi,sijlvanica of Sprengel, Aira mollis oi Muhlenberg being the 

 .same. 



Fournier in ISSl j)ublished one Mexican species which he named 

 EaUmia densiflora. This is probably Eaionia ohiusaia with closely 

 pubescent sheathes. 



Beal, in 1896, describes six sjiecies as being North American raising 

 Eaionia pmnsi/lranira longiflora Vasey to specific rank and making 

 one new species, Eaionia In/brida, based upon what he supposed was 

 Vasey's so-called hybrid between Eaionia pennsijlvanica and Triseium 

 palnsirc, the Eaionia pallcns of Scribner and Merrill. The grass he 

 really described is an awned state of Eaionia fitijormis (E. arisiaia 

 Scribn. & Merrill.) 



Scribner and Merrill (11)00) published Eaionia pallens based upon 

 Aira pallcns of Sprengel and two species regarded as new, viz: E. 

 puhe.srrns and E. arisiaia, the first a pubescent subspecies of Eaionia 

 ohiusaia, the second an awned state of E. filijormij^. 



Hritton in his Manual of the Flora of N. Am. (1901) describes five 

 species: Eaionia ohiusaia (Mx.) .\. Gray, E. puhescens Scribn. h 

 Merrill, E. pennsylvanica (DC.) A. Gray, E. niiida (Sprengel) Nash 

 and E. glabra Nash. 



Small, in his Flora of the Southern United States (1901) has seven 

 species, those described by Britton and E. fliformis (Chapm.) Vasey, 

 and E. longiflora (Vasey) Beal. 



Recently (1905) Rydberg published Eaionia rohusia (Vasey), based 

 upon E. ohiusaia rohusia Vasey, and Eaionia iniermedia which is 

 apparently the same as Eaionia pennsylvanica major (Torr.) Grav. 

 Eaionia rohusia has no valid characters to sejiarate it from Eaionia 

 ohiusaia. 



