GRIFFITHS—THE GRAMA GRASSES. 411 
long, the basal portion often included in the sheath at anthesis; strikingly colored, 
with its purple glumes, green lemmas and cinnabar-colored anthers; spikes about 12, 
rather lax, flattened, 2.5 cm. long including the awns; spikelets 2-flowered with an 
additional rudiment consisting of a short, naked, awn-like projection beyond the palet 
of the second floret, and usually included in the fold of the palet; lower floret herma- 
phrodite, the second staminate or neuter; glumes sharply and hispidly keeled, acumi- 
nate but not awned, the second about 7 mm. in length, the first a trifle shorter; lemma 
of lower floret about 8 mm. long, with 3 short awns, the lateral awns 2 mm. shorter 
than the central; lemma of upper floret 12 mm. long, Ilcng-awned, the awns about the 
same relative length as in the lower floret, prominently scabrous; palet long, narrow, 
with 2 very short awns, plicate; caryopsis not seen. (Ficure 58.) 
No authentic material of this has been examined. Several of the older authors have 
listed it from Acapulco, but referred to it various forms of B. filiformis. It is dis- 
tinguished from other species of the group by its large, stout, glaucous aspect and by 
its lack of papillose hairs on the edges of the leaves.¢ 
Hitchcock’s no. 7080, from Manzanillo, Mexico, is the only collection that I am able 
to refer to this species. It grows in large patches so close to the sea that the spray 
reaches it at high tide. 
39. Bouteloua radicosa (Fourn.). 
Dinebra bromoides H. B. K. Nov. Gen. & Sp. 1: 172. pl. 51. 1816, not Bouteloua 
bromoides Lag. 1816. My interpretation of this is based upon the figures and descrip- 
tion cited. There has been some confusion concerning this species, due mainly to 
the misinterpretation of this and also of D. repens H. B. K. See also Presl, Rel. 
Haenk. 1: 292. 1830. The Haenke specimen in the herbarium of the German Uni- 
versity of Prague shows that the species was correctly interpreted by Presl. 
Atheropogon bromoides Roem. & Schult. Syst. Veg. 2: 415.1817. Based upon Dine- 
bra bromoides H. B. K. See also Spreng. Syst. Veg. 1: 293.1825. Sprengel cites 
Aristida americana Swartz as a synonym, but that name does not belong to this species, 
It appears that Fournier ® misinterpreted this. He credits the species to Roemer 
and Schultes and cites Dinebra bromoides H. B. K.asasynonym. According to my 
interpretation, however, the specimens which he cites belong to A. filiformis. Galeotét 
5704 in the U. S. National Herbarium and the herbarium of the Botanical Garden of 
Brussels, a Karwinski specimen in the St. Petersburg Botanical Garden, and Schaffner 
125 in the Willdenow Herbarium, all belong to A. filiformis. The same is true of 
Botteri 107 and Liebmann 575. A sheet of the last mentioned specimen in the National 
Herbarium is from the herbarium of the Muséum at Paris and is said to have been 
determined by Fournier. 
Eutriana bromoides Kunth, Rév. Gram. 1: 95. 1829, not Trinius, 1824. Based upon 
Dinebra bromoides H. B. K. See also Kunth, Enum. Pl. 1: 281. 1833 and op. cit.2: 
234. pl. 17. f. 4. 1835; also Steud. Syn. Pl. Glum, 1: 216. 1854.¢ 
Nestlera festucaeformis Willd.; Steud. Nom. Bot. ed. 2.2: 192. 1841. A herbarium 
name only, given as a synonym of Eutriana bromoides. 
Heterostega festucaeformis Bonpl.; Fourn. Mex. Pl. 2: 140.1881. A herbarium name 
cited as a synonym of Atheropogon bromoides. 
Atheropogon radicosus Fourn. Mex. Pl. 2: 140. 1881. Bourgeau 450, from Mexico, is 
the type. This number in- the herbaria of the St. Petersburg Botanical Garden, 
Muséum at Paris, and Botanical Garden of Brussels and in the U. 8. National Her- 
barium has been examined. The specimen at Paris is the type. 
@ See discussion alter Boutelowa americana. 
b Mex. Pl. 2: 140. 1881. 
¢ For use of this date of publication see Rendle, Journ. Bot. 87: 33. 1899. 
