British grasses and their employment in agriculture . Fig. 93. Seed ofElymus arenarius. x5. or serrated. Inner palea 4-6 mm. long, thin and cylindrical, enlarged above. The seeds frequentlyremain attached in twos or threes as in the spikelet. (Figs. 88and 89). Digraphis arundinacea, Trin. (Reed-grass.) (Fig. 90.)A semi-aquatic, and entirely glabrous perennial. The creepingrhizomes frequently bear pink or deep red scales (rudimentary-leaves). Shoots cylindrical; sheaths split, with the thin membranousmargins much overlapping. Leaf-blades long and often an inch 9(j Botanical
British grasses and their employment in agriculture . Fig. 93. Seed ofElymus arenarius. x5. or serrated. Inner palea 4-6 mm. long, thin and cylindrical, enlarged above. The seeds frequentlyremain attached in twos or threes as in the spikelet. (Figs. 88and 89). Digraphis arundinacea, Trin. (Reed-grass.) (Fig. 90.)A semi-aquatic, and entirely glabrous perennial. The creepingrhizomes frequently bear pink or deep red scales (rudimentary-leaves). Shoots cylindrical; sheaths split, with the thin membranousmargins much overlapping. Leaf-blades long and often an inch 9(j Botanical Section [?T 1 wide at the broadest part which is about the middle ofthe lower half of the blade; firm, flat, almost ribless mid-rib is prominent and forms a keel below. Ligulelong and either rounded off or torn. There are no auricles, butthe base of the blade forms ledge-like projections. Common mBritain. >>_ ^. Fig. 95. Seedof Festuca ela-tior sub-sp. arun- diiiacea. x 10. Fig. 94. Panicle of Festuca elatior About I nat. size. Inflorescence a plume-like panicle, rather close at first butspreading at the time of flowering which is usually in culms 3-5 feet high; spikelets numerous, one-flowered,and green, white, or purplish. Empty glumes almost equal, andacute. ch. vn] Botanical Description of Species 97 Seeds about 3 mm. long. Outer palea very glossy, andeither white, or yellow, or sometimes dark coloured. At the baseof the palete are a pair of linear hair-tufts. These are shorterthan the outer palea which is awnless and hairy at its upper margins of the inner palea are also fringed with hairs.(Fig. 92.)
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, booksubjectgr
