FOOTNOTES:
[9] Agropyron cristatum and A. desertorum are part of a complex that includes several other species.
[10] Not listed in Hitchcock’s 1951 manual.
[11] A complex.
[12] Bothriochloa intermedia (R. Brown) A. Camus (a complex) of Harlan & Celerier, Okla. Tech. Bul. T-72.
[13] Bothriochloa ischaemum (L.) Keng. var. ischaemum of Harlan & Celerier, Okla. Tech. Bul. T-72.
[14] Not listed in Hitchcock’s 1951 manual.
[15] A complex, including B. californicus Nutt. ex Buckl., B. marginatus Nees, B. maritimus (Piper) Hitchc., and B. polyanthus Scribn.
[16] Includes B. richardsoni Link.
[17] In written material in which B. inermis is the only Bromus species discussed, its common name may be shortened to brome.
[18] Not listed in Hitchcock’s 1951 manual.
[19] Not listed in Hitchcock’s 1951 manual.
[20] Spp. with stiff spreading spikes are called windmillgrass.
[21] The name “fingergrass” applied to erect spp.
[22] Not listed in Hitchcock’s 1951 manual.
[23] The name H. nodosum has generally been misapplied to H. brachyantherum in this country.
[24] The name “oniongrass” applied to those spp. with bulblike stem bases.
[25] M. foliosa is a name formerly applied to M. mexicana. M. mexicana was then misapplied to the recently recognized M. frondosa (Poir.) Fernald, which it resembles.
[26] Considered to be a form of M. richardsonis (Trin.) Rydb., see 1951 ed. of Hitchcock’s manual, p. 382.
[27] Listed as P. fluitans (Ell.) Kunth on p. 602 of Hitchcock’s 1951 manual.
[28] Listed as P. typhoides, Stapf and Hubbard, page 74 USDA Handbook 170, “Grass varieties in the U.S.,” June, 1965.
[29] Older name, now listed as P. setaceum, p. 729 in Hitchcock’s 1951 manual.
[30] Included in Tricholaena in some manuals.
[31] In some areas certain Setaria spp. have been called foxtail, but to avoid confusion, that common name should be reserved to the genus Alopecurus.
[32] These three species are sometimes called foxtail.
[33] Listed as S. glauca (L.) Beauv. in Gray’s Manual, 8th Ed. p. 226, and on p. 235, Vol. I, of the New Britton & Brown, 1952.
[34] Listed as Sorgum Adans. in Gray’s Manual, 8th Ed. p. 234, and on p. 244 in Vol. I of the New Britton & Brown, 1952.
[35] Sorghum almum is not listed in Hitchcock’s 1951 manual. Parodi, in his 1943 paper, concluded that it must have originated as a hybrid between S. halepense and some other sorghum.
[36] Listed on p. 530 of Hitchcock’s 1951 manual as T. crinita (Lag.) Parodi.
[37] Z. pungens Willd. in some manuals.