Glyceria maxima (Hartm.) Holmb.
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Glyceria maxima (Hartm.) Holmb. (1919)
Glyceria maxima (Hartm.) Holmb.
Nomenclature
Classification
Vernacular names
Descriptions
Glyceria maxima (Hartm.) Holmb.
Tall, luxuriant, wide-leaved perennial sending up numerous long leafy shoots from a stout creeping rhizome. Leaf-sheath entire at first, later splitting, light green to pale brown, often purplish, paper-like, shining, very finely scabrid to almost smooth, with numerous conspicuous cross-veinlets. Ligule (4)-4.5-6.5 mm, firmly membranous, glabrous, blunt, but tapered centrally to fine point. Leaf-blade (20)-30-50 cm × 10-20 mm, flat, finely striate, very finely scabrid to almost smooth, abaxially scabrid above on conspicuous midrib; margins finely scabrid, tapering abruptly to short ± rigid tip. Culm (5)-10-180 cm, robust, internodes glabrous. Panicle 20-30-(40) cm, lax and open, or contracted and rather dense, broadly ovate to oblong, with numerous spikelets; rachis, branches and pedicels finely scabrid, longer branches naked below. Spikelets (5)-6-7.5-(10) mm, (3)-4-8-flowered, green, or tinged purplish brown. Glumes subequal, hyaline, 1-nerved; lower 1.7-2.5 mm, elliptic-oblong, subacute, upper 2-3.5 mm, ovate-oblong, obtuse. Lemma 2.5-3.5 mm, 7-nerved, elliptic to ovate-elliptic, broadly obtuse, subcoriaceous; nerves minutely prickle-toothed, not reaching upper hyaline minutely prickle-toothed margins. Palea oblong, keels tubercular-scabrid. Rachilla 0.7-1 mm, glabrous. Anthers (1)-1.5-1.8 mm. Caryopsis c. 1.5 × 1 mm.
Taxonomic concepts
Glyceria maxima (Hartm.) Holmb.
Glyceria maxima (Hartm.) Holmb.
Glyceria maxima (Hartm.) Holmb.
Glyceria maxima (Hartm.) Holmb.
Glyceria maxima (Hartm.) Holmb.
Glyceria maxima (Hartm.) Holmb.
Glyceria maxima (Hartm.) Holmb.
Glyceria maxima (Hartm.) Holmb.
Glyceria maxima (Hartm.) Holmb.
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Metadata
6efae436-5189-46b3-a31c-f14ed8a89efe
scientific name
Names_Plants
1 January 2000
20 March 2007