550 CYPERACE.E. (SEDGE FAMILY.) 



part, viz. as to pi Clai/t. E. conipressum, Lam.) — Pinc-barrcn swamps, New 

 Jersey to Vi/ginia, and soutlnvanl. Juiie-Aii;^. 



3. E. septaugul^re, Witlierini;. Lmas short (I' -3' \on<^), awl-sli(iped, 

 pelliiciil, soft anil very cellular; saipe 1 -striate, slender, 2' -6' high, or when 

 suliincrscd beioiiiiii;^ l°-6° long, aeeording to the depth of the water; chuff 

 aailish. (E. peHuciiluni, Michx.) — In ponds or along their borders, from New 

 Jersey and Penn. to Michigan, and northward. Aug. — Head 2" -3" broad; 

 the bracts, chaff, &c. lead-color, except the white coarse beard. (Eu. Coast of 

 Ireland, &c. only.) 



2. PiEPALANTHUS, Mart. (Sp. of Eriocaulox of authors.) 



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 iramakr), dust 

 or flonr, and av6os, ftoiver, from the meal-like down or scurf of the heads and 

 flowers of many South American species.) 



I. P. flavidus, Kunth. Tufted, stemless ; leaves bristlc-awl-shapcd 

 (1' 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 obsolete ; perianth glabrous ; sepals and petals of the fertile flowers 

 linear-lanceolate, scarious-white. (Eriocaulon flavidum, Midix.) — Low pine 

 barrens, S. Virginia and southward. 



3. LACHNOCAULON, Kunth. Hairy Pipewort. 



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

 Ster. Fl. Stamens 3 : filaments below coalcscent into a club-shaped tube around 

 the rudiments of a pistil, above 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-cleft. — Leaves linear-sword-shaped, tufted. Scape slender, simple, 

 bearing a single head, 2-3-angled, hairy (whence the name from "Kdxvos^ wool, 

 and *:avXo9, stalk). 



1. L. Michauxii, Kunth. (Eriocaulon villosum, Michx.) — Low pino 

 barrens, Virginia (Pursh), and southward. 



Order 127. CYPERACE^. (Sedge Family.) 



Grass-like or rush-lit/; hrrJis, irilh fihrous roots, mostbj solid .'ttons (culms), 

 closed sheaths, and spiked chiejli/ 3-nndrous flowers, one in the axil of each 

 of the glume-like imbricated brads (.scales, glumes), destitute of ani/ perianth, 

 or u-ilh hjipofiynous hrbttles or scales in its place ; the 1-celled ovarii irilh a 

 sinf/le erect anatropous ovule, in fruit forming an achenium. Style 2-(;left 

 ■when the fruit is flattened or lenticular, or 3-cleil when it is 3-an<iul:ir. 

 Embryo minute at the base of the somewhat floury alhmnen. Stem-li-aves 

 when present 3-rank.ed. — A larj^e, widely dlflused family. (See Plates 

 1-6.) 



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