. Bulletin. Gramineae -- United States; Forage plants -- United States. 27 There are several names antedating the above which are regarded by some European authorities as synonymous. B. rigidus Roth, Eoem. & Ust. Mag. Bot. 10: 21. 1790 is one. This has been adopted by Dr. Beal (Grass. N. A. 2: 611. 1896). A careful study of the original description of this species, however, leads us to l)elieve that the plant should at least l)e separated as a ^'ariety. The following quotations from Roth's description 1. c. indicate the chief points of difference: "Culmi . primus erecti, denuim procum
. Bulletin. Gramineae -- United States; Forage plants -- United States. 27 There are several names antedating the above which are regarded by some European authorities as synonymous. B. rigidus Roth, Eoem. & Ust. Mag. Bot. 10: 21. 1790 is one. This has been adopted by Dr. Beal (Grass. N. A. 2: 611. 1896). A careful study of the original description of this species, however, leads us to l)elieve that the plant should at least l)e separated as a ^'ariety. The following quotations from Roth's description 1. c. indicate the chief points of difference: "Culmi . primus erecti, denuim procumbentes, panicula . spiculis . .10 ad 12 tloribus conipositis; corolhe valvula exterior . ; The most important difference between our plants as well as the European speci- mens examined and the above description is in the hirsute flow- ering glume. Mertensand Koch in Roehl. Deutsch. Fl. 1: 689. 1823, say that they received a specimen from Roth himself hav- ing smooth spikelets, thus show- ing that he regarded such forms as belonging to his species. Not- withstanding this these authors, 1. c, p. 691, regard B. ; as at least varietally separate from B. rigidns, so it seems to us best to retain for the present for our plant Desfontaine's name. Brn- mus incraiisatnii Lam. Ene. 1: 468. 1783, and B. L. Mant. 1: , are also doubtful syn- onyms. 11a. BROMUS MAXIMUS GUSSONIParl. Fl. Ital. 1: 407. 1848. Bromm gussoni Pari. Rar. PI. Sic. 2: 8. 1840. Bromus sierilis Guss. Fl. Sic. Prod. Suppl. 1: 27. 1832. Not L. 1753. Differs from the species in its larger size, 4-7 dm. tall, larger and more lax panicle, 1-2 dm. long, with the upper part somewhat drooping. An introduced plant occurring in Arizona, California, and Washington. Specimens examined.—Arizona : Near Fort Huachuca (T. E. Wilcox 172); Huachuca Mt. (J. G. Lemnion and wife 3107). California: Avakju, Santa Catalina Island (Blanche Trask in 1898); San Francisco (Bolander); San Jose (H. A. Brainar
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