. Bulletin. Gramineae -- United States; Forage plants -- United States. 37 Mexican boundary, 2000 Mearns 1893; no locality, 728 Palmer 1896; Oaxaca, 344 Conzatti & Gonzalez 1897. Readily distinguished from the type by its larger size and elongated, spreading branches of the panicle. CH^TOCHIiOA GRISEBACHII MEXICANA var. nov. Seiarin mexicana Schaffner in Herb. A denseh' caespitose form, 6 to 10 cm. high, with interrupted panicles 1 to 3 cm. long and short leaves 2 to 3 cm. in length. Spikelets as in the type. San Luis Potosi, 1044 Schaffner 1876; Schaffner, Sept., 1877. i Flowering glume f
. Bulletin. Gramineae -- United States; Forage plants -- United States. 37 Mexican boundary, 2000 Mearns 1893; no locality, 728 Palmer 1896; Oaxaca, 344 Conzatti & Gonzalez 1897. Readily distinguished from the type by its larger size and elongated, spreading branches of the panicle. CH^TOCHIiOA GRISEBACHII MEXICANA var. nov. Seiarin mexicana Schaffner in Herb. A denseh' caespitose form, 6 to 10 cm. high, with interrupted panicles 1 to 3 cm. long and short leaves 2 to 3 cm. in length. Spikelets as in the type. San Luis Potosi, 1044 Schaffner 1876; Schaffner, Sept., 1877. i Flowering glume finely trans- versely lurlnkled. = Panicle obtuse at the apex. 26. CHJETOCHLOA POLY- STACHYA (Scheele) n. Gomb. Setaria jwlystachya Scheele, Linnaea 22: 339 (1849). (Fig. 22.) A stout, erect perennial, 6 to 12 dm. high, with compressed culms, lanceolate leaves, and loose elongated panicles 1 to 2 dm. in length. Culms cylin- drical or subcompressed, branching at the base, genic- ulate, glabrous or slightly scabrous below the nodes and panicle; nodes brown, bearded with short appressed hairs; sheaths striate, gla- brous or slightly pubescent above, bearded at the apex, margins ciliate, the lower ones subcompressed, more or less scabrous on the keel; ligule short, ciliate-fringed; leaf-l) to 3 dm. long, to 2 cm. wide, abruptly narrowed at the base, acumi- nate, scabrous on both sides and especially so on the car- tilaginous margins, the lower ones often more or less strigose-pubescent, midvein prominent below, becoming obsolete above. Panicle pale green, lanceolate, lax, to dm. long, to 3 cm. in diameter; rachis angular, pilose, branches slender, to 3 cm. long, erect- spreading, much exceeding their internodes; setse solitary, 8 to 12 mm. long, green, slender, flexuous, antrorsely scabrous. Spikelets narrowly ovate, acute, 2 mm. long; first, glume about one-third as long as the spikelet, slightly inflated, trian- gular-cordate, acute, 3-nerved; second gl
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