GRIFFITHS—THE GRAMA GRASSES. 493 
Atheropogon antillarum Spreng. Syst. Veg. 1: 294. 1825. Aristida antillarum Poir. 
iscited asasynonym, Probably aspecies of Aristida from the West Indies. 
Atheropogon medius Fourn. Mex. Pl. 2: 139.1881. This may be a form of Boute- 
loua aristidoides, but it can not be determined with any degree of certainty. 
Atheropogon villosus Steud. Nom. Bot. ed. 2. 1: 167. 1840. The name is credited 
to “ Nees’ and given as a synonym of “ Hutriana villosa.’’ 
Chondrosium virletii Fourn. Mex. Pl. 2: 136.1881. [ have not been able to find 
authentic material of this, although specimens are cited. The type is Virlet 1378, 
from San Luis Potosi, Mexico. Some portions of the description suggest a form of B. 
trinit. 
Chondrosium subscorpioides C. Mill. Bot. Zeit. 14: 347. 1856. Thisis probably Bou- 
teloua gracilis, but there is nothing certain about it. It is from California. 
Corethrum Vahl, Skrivt. Naturh.-Selsk (Kjgbenhavn) 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. Naturb.-Selsk. (Kjgbenhavn) 6: 85.1810. The 
Index Kewensis refers this to Bouteloua bromoides, but the description does not ad- 
mit the plant into this group. 
Cynosurus retroflecus 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. Itis 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¢ refers this doubtfiully te Atheropogon apludioides. 
Dactylis paspaloides Willd.; Kunth, Rév. 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’s 
herbarium given as a synonym of Eutriana villosa according to Trinius’s manuscript. 
Dinebra Jacq. Fragm. 77. pl. 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. pl. 11. f. 3. 1813. This does not belong 
here, although repeatedly placed here in the past. 
Dineba arabica Beauv. Ess. Agrost. 98. pl. 16. f. 2.1812. The plant figured by 
Beauvois does not belong in this group. See Bentham’s opinion of this. ¢ 
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 asynonym of Plagiolytrum calycinum, which is a plant from India. 
Dineba chloridea Presl, Rel. 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 retroflerus as synonyms of Dactylis paspaloides. 
Dinebra retroflexa Panzer, Denkschr. Akad. Wiss. (Miinchen) 4: 270. 1814. Based 
on Dactylis paspaloides Willd. , 
a Gen. Pl. 78. 1818. ¢ Journ. Linn. Soc. Bot. 19: 104. 1881. 
b Ess. Agrost. 98. 1812. @ Enum. Pl. 111. 1809. 
