GRIFFITHS THE GEAMA GEASSES. 



387 



Mrs. Anna B. Nickels, 

 specimen appears- to 



13. Bouteloua trinii (Fourn.). 



Chondrosium trinii Fourn. Mex. PI. 2 : 136. 1881. A duplicate of the type (Ber- 

 landier 1427, Laredo, Texas), in the National Herbarium, and a photograph and frag- 

 ment of the type from the herbarium of the Paris Museum are before me. 



Chondrosium (?) polystachyum Trin. ; Fourn. Mex. PI. 2 : 136. 1881. This herbarium 

 name is given as a synonym of Chondrosium trinii. 



Bouteloua trifida Thurb. in Wats. Proc. Amer. Acad. 18 : 177. 1883. The type, in 

 the Gray Herbarium, is Palmer 1355, Monclova, Coahuila, Mexico, 1880. See also 

 U.S. Dept. Agr. Div. Bot. Bull. 12 1 : pi. 46. 1890; U. S. Dept. Agr. Div. Agrost. Bull. 

 7: 224 and 225./. 206 and 207. 1897. 



Bouteloua burlcii Scribn. in Wats. Proc. Amer. Acad. 18: 179. 1883; Bull. Torrey 

 Club 11:5. 1884. The type, as considered by Scribner in the latter publication, was 

 collected at Laredo, Tex., by 

 This 

 have 

 been destroyed when Scrib- 

 ner's herbarium was burned. 

 Berlandier 167, which is the 

 first specimen cited by Wat- 

 son, probably was burned at 

 the same time, at least this 

 does not appear to be now 

 in the Gray Herbarium. 

 Berlandier 1427, cited in the 

 original description, is in the 

 National Herbarium, Curtiss 

 3440* also cited, is in the 

 herbarium of the Missouri 

 Botanical Garden and the 

 National Herbarium. See 

 also XJ. S. Dept. Agr. Div. 

 Bot. Bull. 12 1 : pi. 36. 1890. 



Watson's paper a was pub- 

 lished August 23 , 1883 . Here 

 he describes B. trifida Thurb., 

 basing it upon Palmer 1355, 

 Monclova, Coahuila, Mexico. 

 He also lists Parry & Palmer 

 945 and Wright 749, 2020, and 

 2022, and describes B. burlcii 

 Scribn. , basingit upon Berlandier 167 and 1427, and Curtiss 3440. Scribner b publishes 

 the same species again. Under B. trifida Scribner lists: "Texas and New Mexico; G. 

 R. Vasey, Mexico; Dr. E. Palmer No. 1355, 1880." Under B. burlcii he lists the follow- 

 ing: "Laredo, Texas; Mrs. Anna B. Nickels; communicated to me by Mr. Isaac Burk, 

 of Philadelphia, for whom the species is named. Sandy plains, Upper Concho, West 

 Texas; J. Reverchon; No. 3440*, Curtiss's Distribution North American Plants." 



In the National Herbarium a specimen collected by Letterman, Laredo, Tex., 

 July, 1882, is marked the type of B. burlcii, and another collected by G. R. Vasey, 

 El Paso, Tex., 1881, the type of B. trifida, both in Scribner's hand. 



Fig. 41. — Bouteloua trinii. a,Spikelet; 6, c, lemma and palet of first 

 floret; d , rudiment; e, two views and cross section of caryopsis. 

 a, Scale 7.5; b-e, scale 12.5. From Orifftths 6104. 



DESCRIPTION. 



A variable, low, delicate, cespitose perennial, with comparatively naked culms, 

 12 to 15 cm. high, but very variable in size, erect, or, in old, undisturbed plants, 



a Proc. Amer. Acad. 18 : 176-180. & Bull. Torrey Club 11: 5. January, 1884. 



