Aquatic and Wetland Vascular Plants of the Northern Great Plains
Cinna L. -- Woodreed
Tall, slender, nonrhizomatous to weakly rhizomatous perennials of wet to moist, often shady habitats. Leaf blades rather broad, flat and lax; ligule prominent, brownish, membranous, lacerate. Inflorescence a rather large, closed to open panicle, the branches ascending to spreading or drooping. Spikelets small, 1-flowered, laterally compressed, disarticulating below the glumes, the rachilla slightly elongated so that the floret is stipitate at the base, prolonged as a tiny bristle behind the palea; glumes 1- or 3-nerved, strongly keeled, sharply acute, the first a little shorter than the second; lemma similar to the glumes, 3-nerved, more blunt than the glumes, usually with a short awn arising just below the tip; palea 1-nerved, shorter than the lemma. Grain golden-brown, ellipsoid, 1.5-2.5 mm long.
| Lead | Characteristic | Go To |
| 1 | Second glume 3-nerved, 3.8-6 mm long; anthers 1.1-1.7 mm long; panicle rather condensed, with the branches strongly ascending. | C. arundinacea |
| 1 | Second glume 1-nerved, 2-3.5 mm long; anthers 0.5-0.8 mm long; panicle usually open, with the branches spreading to drooping. | C. latifolia |
- 1. Cinna arundinacea L. -- Woodreed
- 2. Cinna latifolia (Trev. ex Goepp.) Griseb. -- Drooping woodreed
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