GRIFFITHS—THE GRAMA GRASSES. 399 
to 0.5 mm. wide, rounded on the back, the scutellum rounded at the apex and covering 
two-thirds to three-fourths of the ventral surface. (Ficure 50.) 
The only specimens of this species which have been seen are those of the type col- 
lection. The species is very closely related to B. curtipendula, but is easily distin- 
guished by the felty-pubescent sheaths and the character of the inflorescence. 
21. Bouteloua chondrosioides (H. B. K.) Griseb. 
Dinebra chondrosioides H. B. K, Nov. Gen. & Sp. 1: 173. pl. 53. 1816. The figures 
and description and a specimen in the Willdenow Herbarium, collected by Humboldt, 
show conclusively that this is a young plant of what we have long known in this coun- 
try as B. havardii, There is another specimen in the Trinius Herbarium from Hum- 
boldt, determined by Kunth in 1836. The figures cited above are faulty in that they 
do not show the glumes as hairy as they are. 
Bouteloua ovata Lag. Gen. & Sp. Nov. 5. 1816. Lagasca’s description, ‘‘culmo 
subpentastachyo: spicis ovatis: glumis 
extus pubescentibus,’’ applies very well 
to a young specimen of B. havardit such 
as the type of Dinebra chondrosioides, 
This, together with the fact that some 
of the earlier botanists have suggested 
that the two names apply to the same 
species, leads me to this disposition. 
Atheropogon chondrosioides Roem. & 
Schult. Syst. Veg. 2: 416.1817. Based 
upon Dinebra chondrosioides H. B. K. 
See also Spreng. Syst. Veg. 1: 293. 1825. 
Actinochloa ovata Roem. & Schult. 
Syst. Veg. 2: 420. 1817. Based on 
Bouteloua ovata Lag. 
Eutriana cristata Trin. Gram. Unifl. 
241. 1824. Based upon <Atheropogon 
chondrosioides Roem. & Schult. 
Chondrosium humboldtianum Kunth, 
Rév. Gram. 1: 93. 1829. Based upon 
Dinebra chondrosioides H. B. K. See 
also Fourn. Mex. Pl. 2: 136. 1881, where 
this species is also correctly interpreted. Fic. 50.—Bouteloua pringlei. a, Spikelet; 5, c, lemma 
Fournier cites Virlet 1412. This num- and palet with rudiment attached; d, two views and 
ber in the herbarium of the Muséum of cross section of caryopsis. a@, Scale 7.5; b-d, scale 15. 
oe . From type specimen. 
Paris is exactly comparable with my no. . 
6732, which isa young specimen of Bouteloua havardii. Schaffner 133, cited by Four- 
nier, in Grisebach’s herbarium, is likewise an immature plant of B. havardit. 
Bouteloua chondrosioides Griseb. in Fourn. Mex. Pl. 2: 136. 1881. This name, 
presumably based on Dinebra chondrosioides, is mentioned as a synonym under Chon- 
drosium humboldtianum. Watson gives this combination with Bentham as the 
author. 
Bouteloua havardii Vasey in Wats. Proc. Amer. Acad. 18: 179. 1883. Republished 
in Bull. Torrey Club 11: 6. 1884. The specimen cited in the latter place is Havard 
in 1881, from Limpio Mountains of western Texas. The type specimen in the Na- 
tional Herbarium is numbered 53. See also U.S. Dept. Agr. Div. Bot. Bull. 12': 
pl. 88. 1890; U.S. Dept. Agr. Div. Agrost. Bull. 7: 216. f. 198. 1897. 
a Proc. Amer. Acad. 18: 179. 1883. 
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