GRIFFITHS — THE GEAMA GRASSES. 423 



Atheropogon antillarum Spreng. Syst. Veg. 1 : 294. 1825. Aristida antillarum Poir. 

 is cited as a synonym. Probably a species of Aristida from the West Indies. 



Atheropogon medius Fourn. Mex. PL 2: 139. 1881. This may be a form of Bout 

 loua aristidoides, but it can not be determined with any degree of certainty.- h , 



Atheropogon villcsus Steud. Nom. Bot. ed. 2. 1 : 167. 1840. The name is credited 

 to ''Nees" and given as a synonym of " Eutriana villosa." 



Chondrosium virletii Fourn. Mex. PI. 2 : 136. 1881. I have not been able to find 

 authentic material of this, although specimens are cited. The type is Virlet 1373, 

 from San Luis Potosi, Mexico. Some portions of the description suggest a form of B. 

 trinii. /' 



Chondrosium subscorpioides C. Mull. Bot. Zeit. 14 : 347. 1856. This is probably Bou- 

 teloua gracilis, but there is nothing certain about it. It is from California. 



Corethrum Vahl, Skrivt. Naturh.-Selsk (Kj0benhavn) 6 : 85. 1810. This is listed 

 in the Index Kewensis as a synonym of Bouteloua, but both the description and the 

 locality (Syria) indicate that it does not belong to this group. 



Corethrum bromoides Vahl, Skrivt. Naturh.-Selsk. (Kj0benhavn) 6: 85. 1810. The 

 Index Kewensis refers this to Bouteloua bromoides, but the description does not ad- 

 mit the plant into this group. 



Cynosurus retroflexus Vahl, Symb. Bot. 2 : 20. 1791. This is from the East Indies. 

 Both the locality and Vahl's description indicate that it does not belong to this group. 



Cynosurus secundus Pursh, Fl. Amer. Sept. 2 °. 728. 1814. It is not possible for me 

 to identify this from the description. It is probably not a member of our group, 

 although by some it has been referred to B. curtipendula. It may be said that B. 

 curtipendula is listed by Pursh under two other genera, viz, Atheropogon and Chloris. 

 Nuttall a refers this doubtfully to Atheropogon apludioides. 



Dactylis paspaloides Wilid.; Kunth, R^v. Gram. 1 : 91. 1829. Given as a syno- 

 nym of Leptochloa arabica. This has been erroneously referred to this group by some 

 authors. 



Deyeuxia brasiliensis Steud. Nom. Bot. ed, 2. 1 : 620. 1840. A name from Sprengel'e 

 herbarium given as a synonym of Eutriana villosa according to Trinius's manuscript. 



Dinebra Jacq. Fragm. 77. pi. 121. f. 1. 1809. This is a genus of Chlorideae to which 

 various authors have referred species of Bouteloua, but which is not allied to this group. 

 Beauvois & spells the name Dineba (the original Arabic spelling) giving Delile as the 

 author, and this spelling is followed by Presl. Kunth spelled the name as did Jacquin. 



Dineba aegyptica Delile, Descr. Egypt. 4 : 26. pi. 11. f. 3. 1813. This does not belong 

 here, although repeatedly placed here in the past. 



Dineba arabica Beauv. Ess, Agrost. 98. pi. 16. f. 2. 1812. The plant figured by 

 Beauvois does not belong in this group. See Bentham's opinion of this, c 



Dinebra brevifolia Steud. Syn. PL Glum. 1 : 299. 1854. This is from Abyssinia, 

 and probably is not a member of this group. 



Dinebra calycina Wight; Nees, Proc. Linn. Soc. 1 : 95. 1841. A Wight herbarium 

 name published as a synonym of Plagiolytrum calycinum, which is a plant from India. 



Dineba chloridea Presl, Pel. Haenk. 1 : 291. 1830. According to the specimen at 

 Prague this is not a Bouteloua, but probably a Chloris. " 



Dineba lima Beauv. Ess. Agrost. 98, 160. 1812. Beauvois cites this doubtfully 

 under this genus. The combination is made in his index 



Dineba paspaloides Willd.; Beauv. Ess. Agrost. 98, 160. 1812. A name only, prob- 

 ably based upon Dactylis paspaloides Willd. Willdenow^ cites Dinebra arabica and 

 Cynosurus retroflexus as synonyms of Dactylis paspaloides. 



Dinebra retroflexa Panzer, Denkschr. Akad. Wiss. (Munchen) 4 : 270 1814. Based 

 on Dactylis paspaloides Willd. 



a Gen. PL 78. 1818. c Journ. Linn. Soc. Bot. 19: 104. 1881. 



b Ess. Agrost. 98. 1812. d Enum. PL 111. 1809. 



