The Grama Grasses; Bouteloua and Related Genera (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1912 edition. Excerpt: ...doubtful in my mind whether B. arenosa is really specifically distinct from B. barbata, but I hesitate to reduce it, because my experience in the field in this particular locality is very limited. It must be confessed, however, that there are forms of B. barbata in Arizona and New Mexico which approach this in the one character which has served to separate it; that is, the length of the awns. However, only the specimens enumerated below have awns as short as those of B. barbata, the Arizona forms referred to B. barbata having awns only two-thirds to three-fourths as long. We have here the same sort of differences that we have in B. rothrockii and its allies. a The figure is very misleading. b Proc. Amer. Acad. 24: 81.1889. Besides several sheets of the type collection there are in the National Herbarium two specimens collected by Orcutt in Lower California in 1889 and 1890 and one by Hayes at "Puachio," Arizona, in 1858. All of these differ only in having longer awns from forms of B. barbata which I know in the field. Fig. 40.--Bautcloua arenosa, a, Spikelet; b, c, lemma and palet of first floret; d, e, rudimentary second and third florets; /, two views and cross section of caryopsis. o, Scale 7.5; b-f, scale 20. From type specimen, HERBARIUM SPECIMENS. Arizona: Hayes, Puachio. Mearns 929, south of Bisbee. California: Orcutt, Colorado Desert. Texas: Buckley in 1883. Mexico: Palmer 189, Guaymas. Hitchcock 3534, Hermosillo. Orcutt, Lower California in 1889. Mrs. Anna B. Nickels, specimen appears to 13. Bouteloua trinii (Fourn.). Chondrosium trinii Fourn. Mex. Pl. 2: 136. 1881. A duplicate of the type (Berlandier 1427, Laredo, Texas), in the National Herbarium, and a photograph and fragment of the type from the herbarium of the Paris...