. 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. 1. C. flavfiscens L. Culms dm. high ; involucre 3-leaved, very unequal; spikelets cm. long, mm. broad, becoming linear, obtuse, clustered on the 2-4 very short rays ; scales ob- tuse, straw-yellow ; stamens 3 ; achene shining, orbicular, its superficial cells oblong. —Low grounds, N. Y. to Mich., 111., and southw. (Eurasia, Afr., Trop. Am.) Fig. 200. 2. C. diiindrus Terr. Simi- lar ; spikelets lance-oblong, cm. long,
. 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. 1. C. flavfiscens L. Culms dm. high ; involucre 3-leaved, very unequal; spikelets cm. long, mm. broad, becoming linear, obtuse, clustered on the 2-4 very short rays ; scales ob- tuse, straw-yellow ; stamens 3 ; achene shining, orbicular, its superficial cells oblong. —Low grounds, N. Y. to Mich., 111., and southw. (Eurasia, Afr., Trop. Am.) Fig. 200. 2. C. diiindrus Terr. Simi- lar ; spikelets lance-oblong, cm. long, 2-3 mm. broad, rather loosely flowered, scattered or clustered on the 2-5 very short or unequal rays ; scales rather obtuse, with a narrow pnrple-brown margin or merely brown-flecked, thin and membranous ; achene dull, oblong-obovate, the superficial cells more or less quadrate; otherwise much like the last. — Low grounds, N. B. to Ont., Neb., and southw. Fig. 201. 3. C. rivuliris Kunth. Similar; the densely flowered spikelets mostly 1-2 cm. long ; scales firmer, subcoriaceous, slightly lucid, with broad brown mar- gins, or brown all over, or rarely pale; style-branches slightly or not at all exserted. (C. diandrus, var. castaneus Torr.)—Low ground, with the last or by itself. Fig. 202. 203. C. NuttaUii. 4. C. NuttSUii Eddy. Culms dm. high ; spikelets lance-linear, acute and very fiat, 1-3 cm. long, 2-3 mm. broad, crowded on the few usually very short (or some of them obvious) simple rays ; scales oblong, yellowish-brown, rather loose; stamens 2 ; achene oblong to oblong-obovate ( mm. broad), bluntly pointed, minutely buUate and more or less reticu- lated, dull. — Mostly in brackish marshes, along the coast, from Me. to Fla. Fig. 203. 5. C. microddntus Torr. Culms slender, 1-7 dm. high ; leaves and somewhat spreading elongated bracts of involucre 1-4 mm. wide ; spikelets few to many on the 4-8 rays, linear, acute, !^ i3ui. long, mm. thick, the rha
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