CYPEHACK/E. (SEDCE FAMILY.) oGT 



ties terminated by a single head, involucrate by some outer empty bracts. 

 Flowers, also the tips of the bracts, etc., usually white-bcanled or woolly. 

 (Name compounded of epioy, wool, and Kav\6s, a sUdk, fronx the wool at the 

 base of the scape.) — Our species ax"e all steniless, wholly glabrous excepting 

 at the base and the flowers, with a depressed head and dimerous flowers. 



1. E. decangul^re, L. Z.crt?cs o6/Mse, varying from linear-lanceolate to 

 linear-awl-shapod, rather rigid; scapes 10- 12-ribbed (1 -3° high) ; head hemi- 

 spherical, becoming globular (2-7" wide); scales of the involucre acutish, 

 straw-color or light brown; c/ia Jf {hrncts among the flowers) pointed. — Pine- 

 barron swamps, X. .1. to Fla. ,July-Sopt. 



2. E. gnaphalbdes, Miclix. Lcdi-cs spi-eadinrj (2-5' long), grasstz-awl- 

 shaped, rigid, or when submersed thin and pellucid, tapering gradually to a 

 sharp point, mostly shorter than the sheath of the lO-ribhed scape; scales of 

 the involucre very obtuse, turning lead-color; chaff obtuse. — Pine-barren 

 swamps, N. J. to Fla. 



3. E. septangul^re, Withering. Leaves short (\- 3' long), awl-shaped, 

 pellucid, soft and very cellular; scaj)e 4-7-striate, slender, 2-6' high, or when 

 submersed becoming 1 -6° long, according to the depth of the water; chaff 

 acuttsh ; head 2-3" broad; the bracts, chaff, etc., lead-color, except the white 

 coarse beard. — In ponds or along their borders, Newf. to N. J., west to Ind., 

 Mich., and Minn. July, Aug. (Eu.) 



2. P^PALANTHUS, Martins. 



Stamens as many as the (often involute) lobes of the funnel-form corolla of 

 the sterile flowers, and opposite them, commonly 3, and the flower ternary 

 throughout. Otherwise nearly as in Eriocaulon. (Name from -naiirdK-n, dust 

 or flour, and 6.vdos, flower, from the meal-like down or scurf of the heads and 

 flowers of many South American species.) 



1. P. flavidulus, Kunth. Tufted, stemless ; leaves bristle-awl-shaped 

 (!' long); .scapes very slender, simple, minutely pubescent (6-12' high), 5- 

 angled ; bracts of the involucre oblong, pale straw-color, those among the flow- 

 ers mostly ol)solete ; perianth glabrous ; sepals and petals of the fertile flowers 

 linear-lanceolate, scarious-white. — Low pine-barrens, S. Va. to Fla. 



3. LACHNOCAIJLON, Kunth. ILuuv Pipi-wort. 



Flowers monoecious, etc., as in Eriocaulon. Calyx of 3 sepals. Corolla none ! 

 Ster. Fl. Stamens 3 ; filaments below coalescent into a club-shaped tul)e around 

 the rudiment of a pistil, al)ove separate and elongated ; anthers 1-celled ! Fert. 

 Fl. Ovary 3-celled, surrounded by 3 tufts of hairs (in place of a corolla). Stig- 

 mas 3, two-deft. — Leaves linear-sword-shaped, tufted. Scape slender, bearing 

 a single lioad, 2 - 3-angled, hairy. (Name from \axvos, troof, and Kav\6s, stalk.) 



1. L. Michauxii, Kunth. — Low pine-barrens, V'a. to Fla. 



Order 128. CYPEKACE^. (Sedge Family.) 



Grass-lilce or 7'ii.^h-lilc herbs, withflbrous roots, mostly solid stems (culms), 

 closed sheaths, and spik'cd chicflij 3-androus floivers, one in the axil of each 

 qfthe glume-like imbricated bracts (scales, glumes), destitute of any perianth, 



