. Bulletin. Gramineae -- United States; Forage plants -- United States. 54 Avery well markefl species, characterized by rigid basal leaves and densely flowered dark-purple panicles, and especially by its rigid glumes and naked flowering glumes. Distributed as Poa iinUuteraJis, with wliich it has no resemblance excepting in its densely flowered panicle. POA LONGEPEDUNCULATA Scribn., sp. u. (PI. XI.) A slender, erect, and rather densely ca^spitoso grass, ."> to 7 dm. high, from short, creeping rootstocks, with narrow basal leaves and long-exserted and densely flowered panicles, 5 to 7 cm
. Bulletin. Gramineae -- United States; Forage plants -- United States. 54 Avery well markefl species, characterized by rigid basal leaves and densely flowered dark-purple panicles, and especially by its rigid glumes and naked flowering glumes. Distributed as Poa iinUuteraJis, with wliich it has no resemblance excepting in its densely flowered panicle. POA LONGEPEDUNCULATA Scribn., sp. u. (PI. XI.) A slender, erect, and rather densely ca^spitoso grass, ."> to 7 dm. high, from short, creeping rootstocks, with narrow basal leaves and long-exserted and densely flowered panicles, 5 to 7 cm. long. Culms smooth, excepting just below the panicle where they are minutely scabrous as is the main axis of the panicle. Sheaths loose and crowded at the , minutely scabrous. Ligule about 1 mm. in length. Leaf-blades of the sterile shoots .5 to 20 cm. long; those of the culm, two or three, the uppermost rarely exceeding 1 cm. in length, sometimes reduced to a unicronate point, lowermost rarely more than 1 cm. long, 1 to 2 mm. wide, minutely scabrous above and be- low, conspicuonsly roughened near the rigid apex. Panicle branches 1 to 2 cm. long, the shorter ones flower-bearing to the base. Pedi- cels scabrous. 8pikelets narrowly oljlong-lanceolale, somewjiat com- pressed, usually about (i mm. long, 3- to 5-flowered. Outer glumes minutely scabrous on the keels, the first 2-nerved, the broader second glume 3-nerved, with broadly sub- hyaline margins. Flowcringglumes about 1 mm. long, minutely rough- ened on the keel, especially near the apex and finely pubescent on the dorsal and marginal nerves near the base. Intermediate nerves in- distinct. Palea shorter than the flowering glume, scabrous on the nerves, and very minutely pubes- cent between them, the apex hya- line, adherent to the grain. Loose, gravelly soil, summit of Sheep Mountain, Laramie, Albany County, "\Vyo., altitude 2,700 meters (Aveu Nelson,,July 3,1897). Rather scarce. AGROPYRON ELMERI Seiibn., sp. n.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectforageplantsunitedst
