GRIFFITHS THE GRAMA GRASSES. 373 



Chondrosium foenum Torr. in Emory, Mil. Reconn. ,}.54Cyl. 12. 1848. The plate is 

 sufficient to identify this. 



Chondrosium papillosum Torr. in Marcy, Expl. Red. Riv. 300. 1852. Based upon 

 Atheropogon papillosus Engelm. 



Bouteloua foena Torr. Cat. PI. Surv. W. 100th Merid. 18. 1874. Based upon Chon- 

 drosium foenum Torr. 



Chondrosium drummondii Fourn. Mex. PL 2 : 137. 1881. The type number (Drum- 

 mond 323) in the herbarium of the Museum at Paris and in the herbarium of the St. 

 Petersburg Botanical Garden belong to this species, but the prolongation of the rachis 

 is rather short in the fragments before me from both the above depositories. A photo- 

 graph of the type taken for me by A. S. Hitchcock in 1907 represents the typical form 

 of the species. 



Bouteloua aschenborniana Griseb.; Fourn. Mex. PL 2 : 137. 1881. A manuscript 

 name mentioned as a synonym of Chondrosium aschenbornianum Nees. 



Bouteloua palmeri Vasey, Bull. Torrey Club 14 : 9. 1887. A name only. Vasey 

 observes that this species, which was distributed to some extent under this name, is a 

 variety of B. hirsuta. 



Bouteloua hirsuta minor Vasey, U. S. Dept. Agr. Div. Bot. Bull. 12 1 : pi. 39. f. 2. 



1890. See B. hirsuta major. The type of this variety appears to be a specimen col- 

 lected in Texas, 1883, by S. B. Buckley. 



Bouteloua hirsuta major Vasey, U. S. Dept. Agr. Div. Bot. Bull. 12 1 : pi. 39. f. 3. 



1891. The specimen in the National Herbarium locates Vasey's work without doubt, 

 although the label is not in Vasey's writing. 



Bouteloua hirsuta palmeri Vasey; Beal, Grasses N. Amer. 2: 417. 1896. Vasey 

 says a that this has been distributed as B. palmeri, but he refers it to B. hirsuta. The 

 specimen in the National Herbarium plainly marked by Vasey "Cultivated from seed 

 collected by Palmer in Mexico, 1886," fixes the type without any question. Watson b 

 also uses this name. 



Bouteloua bolanderi Vasey; Beal, Grasses N. Amer. 2: 417. 1896. Beal mentions 

 this as a synonym under B. hirsuta variety palmeri. It is said to have been cultivated 

 from seed collected by Palmer in Mexico in 1886. I have not been able to find in the 

 National Herbarium any specimen marked B. bolanderi. 



Bouteloua hirta Scribn. Contr. Nat. Herb. 2 : 531. 1894. Based on Chondrosium 

 hirtum H. B. K. 



Bouteloua hirta major Vasey, Contr. Nat. Herb. 2 : 531. 1894. 



Bouteloua hirta minor Vasey, Contr. Nat. Herb. 2 : 531. 1894. 



DESCRIPTION 



A cespitose, rigid, erect perennial of very variable habit, size, and general appear- 

 ance, in the northern portion of the Great Plains forming a sod, but in the Southwest 

 and in Mexico growing in isolated clumps, rather rigid and stout, with unbranched 

 culms, smooth, striate, close sheaths, small, ciliate ligule, and flat, somewhat hispid, 

 narrow blades, more numerous below than above; panicle racemose, 3 to 5 cm. long, 

 bearing 1 to 4 spikes, normally 2 in the north but more commonly 3 or 4 in the south, 

 2.5 to 3.5 cm. long, with a projection of the rachis 5 to 8 mm. beyond the last spikelets; 

 spikelets numerous, 35 to 45, pectinate, consisting of a lower, fertile floret and an upper 

 rudiment, glumes unequal, the first minutely hispid, about 3 mm. long, acuminate, 

 the second acuminate, short-awned, about 6 mm. long, minutely hispid and conspicu- 

 ously tuberculate-hairy; lemma 3-toothed, the central tooth terminating in a short, 

 hispid awn slightly longer than the lateral teeth, these simply acuminate-pointed, 

 conspicuously pubescent; paletoval, broadly pointed ; rudiment consisting of 3 his- 

 pid, equal awns, about 6 mm. long, and one or two small scales upon a stipe, 1 to 2 mm. 



"Bull. Torrey Club 14 : 9. 1887. b p ro c. Amer. Acad. 22 : 461. 1887. 



