. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. 248. E. Engelmannl Spikelet x 2%. Achene x 10. 249. E. palustris. Spikelet X 3. Achene x 10. nigh I spikelet cylindrtc, 5-20 mm. long, 2-4 mm. tliick, acutish ; scales close- appressed, brown; achenes with broad much flattened tubercle; bristles about equaling the achene.âLocal, Mass. to Mo. Fig, 248. Var. iiKTbwsA Gray. Bristles wanting or rudimentary.âMore frequent, Mass. to Neb., s. to Pa., Ind., and Ariz. 12. E. palustris (L.) R. & S. Cu
. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. 248. E. Engelmannl Spikelet x 2%. Achene x 10. 249. E. palustris. Spikelet X 3. Achene x 10. nigh I spikelet cylindrtc, 5-20 mm. long, 2-4 mm. tliick, acutish ; scales close- appressed, brown; achenes with broad much flattened tubercle; bristles about equaling the achene.âLocal, Mass. to Mo. Fig, 248. Var. iiKTbwsA Gray. Bristles wanting or rudimentary.âMore frequent, Mass. to Neb., s. to Pa., Ind., and Ariz. 12. E. palustris (L.) R. & S. Culms nearly terete, striate, m. high; spijtelet slender, sub- cylindric, pointed, many-flowered; scales ovate-oblong, loosely imbricated, reddish- brown with a broad and translucent â whitish margin and a greenish keel, the upper acutish, the lowest rounded and often enlarged; achene obovoid, some- what shining, crowned with a short ovate or ovate-triangular flattened tubercle, shorter than the usually i bristles. â Very common and variable, either in water, where it is rather stout and tall, or in wet grassy grounds, where it is slender and lower. (Eurasia.) Fig 249. Var. glaucesoens (Willd.) Gray. Culms slender or filiform; tubercle narrower, acute, beak-like, sometimes half as long as the achene. â With the type. Var. cAlta (Terr.) Gray. Bristles none ; tubercle short, but narrower than in the type. âLocal. Var. vioENS Bailey. Culms very stout, rigid ; achene more broadly obovoid. â Lake margins, northw. 13. E. aciculkrls (L.) R. & S. Culms finely capillary, 3-10 cm. high (becoming much elongate when submersed), more or less i-angular; spikelet 2-6 mm. long; scales ovate-oblong, rather obtuse (greenish with purple 250. E. aoicnlaiis. sides) ; achenes obovate-oblong, only the lowest Spikelet x 2. maturing, with S-ribbed angles and 2-3 times as Acliene x 10. many smaller intermediate ribs, also transversely striate, longer thau the 3-4 very fugacious bristles
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