2 CONTEIBUTIONS FROM THE NATIONAL HERBARIUM. 



13 to 16, inclusive, which represent, respectively, JBromus erectus, 

 B. sterilis, B. arm7isls, B. asper, Festuca giga7itea, and F. elatior. 



In the fifth edition of the same work, 1754, the description, with a 

 few very insignificant changes, is the same as in the first edition, but 

 the citations of Dillenius and of Scheuchzer are omitted. 



In the first edition of Linnseus's Species Plantarum, 1753, from 

 which the genus must by common acceptation date, eleven species are 

 described in the following sequence: F. ovina, F. duriuscula, F. 

 rubra, F. amethystina, F. myuros, F. maritima, F. deciimbens, F. 

 elatior^ F. fluitans, and F. cristata. 



Of these species F. decmnbens is the type of the genus Sieglingia of 

 Bernhardi; F. fluitans is Panicularia fluitans Kuntze, and F, cristata 

 is the type of the genus Koeleria of Persoon. 



The remaining species are generally included by authors in the genus 

 Festuca, so that whether we accept the first species, F. ovina, as the 

 type of the genus, or follow the historic method of residues, the result 

 in this genus is practically the same. 



Numerous other genera have, however, been proposed for species 

 usually included in, or first referred to, Festuca. Chronologically con- 

 sidered these are as follows: 



Vulpia Gmel. Fl. Bad. 1 : 8. 1805. 



Only one species included, V. myuros {Festuca myuros L.). 



Schedonorus Beauv. Agrost. 99. 1812. (Spelled " Schenodorus " in the index of 

 the same work. ) 



Based on seven species, of which the first is Festuca elatior L. 

 Beauvois' plate also seems to be of this species, but if so it is very 

 faulty. 



Sclerochloa Beauv. Agrost. 97, 177. 1812. 



Based on Foa dura L., Poa procumhens Schreb., and Poa divaricata 

 Beauv., all of which are nomina nuda, though "Poa dura L." {Oy7io- 

 surus durus L.) is evidently an error for Poa dura Scop. Beauvois 

 figures S. dura. 



Technically, perhaps, Sclerochloa is not published by Beauvois, in 

 which view the geims would date from Beauvois in Reichenbach, Icones 

 Florae Germanicae 1: 23. 1834, where the first species is likewise 

 S. dura. 



This genus is generally accepted. 



Tragus Panzer, Denkschr. Acad. Miinch. 1813: 296. 1814. 



Nine species were included by the author, none of which are figured. 

 The first in position is T, elatior {Festuca elatior L.). 

 There is an older Tragus of Haller, 1768. 



