550 cyperace^;. (sedge family.) 



part, vfe. as to pi. Clayt. E. compressum, Lam.) — Pine-barren swamps, New 

 Jersey to Virginia, and southward. June -Aug. 



3. E. septangulare, Withering. Leaves short (1'- 3' long), awl-shaped, 

 pellucid, soft and very cellular ; scape 1 -striate, slender, 2' - 6' high, or when 

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

 acutish. (E. pelliicidum, 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. PJEPALANTHUS, Mart. (Sp. of Eriocaulon 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 iraiTrdXr], dust 

 or flour, and avQos, flower, from the meal-like down or scurf of the heads and 

 flowers of many South American species.) 



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

 (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, Michx.) — 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 coalescent 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 Xdyvoy, wool, 

 and KavXos, stalk). 



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

 barrens, Virginia (Pursh), and southward. 



Order 127. CYPERACEiE. (Sedge Family.) 



Grass-like or rush-like herbs, withflbrous roots, mostly solid stems (culms), 

 closed sheaths, and spiked chiefly 3-androus flowers, one in the axil of each 

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

 or with hypogynous bristles or scales in its place ; the 1-celled ovary with a 

 single erect anatropous ovule, in fruit forming an achenium. Style 2-cleft 

 when the fruit is flattened or lenticular, or 3-clefl when it is 3-angular. 

 Embryo minute at the base of the somewhat floury albumen. Stem-lea*ves 

 when present 3-ranked. — A large, widely diffused family. (See Plates 

 1-6.) 



