Okdbb 154.— BBIOOAULONACB^. 729 



•cafes rounded-obovale ; sep. shorter than the scales, fringed along the winged keel 

 — ^Wet pine barrens, Ga. (Feay). Scapes strict, 1 to 3f high. Lva. strict, 6 to 9, 

 by 2 to 4", graaaally aoute. Heads 1 to 9" long. Aug., Sept. (X. brevifolia 

 Wl.) — The leaves ia •ur specimens are not all rough-edged as in Kunth'a. 

 5 X. fimbridta Ell. Feathered Xtbis. Lva. linear-gladiate, erect, nearly as 

 long as the scape which is strict, striate, and enlarged at the summit; head oval 

 or oblong, scales rounded, loosely imbricated; sep. twico(!) longer than the 

 bracts, conspicuously fringed on the keel above. — Sandy swamps, R. I. (Olney), 

 N. J., (Rev. I. T. Holton) to Fla. Scape 2 to 3f high. Lva. 20 to 30' long, about 

 3" wide, sheathing below. Head 6 to 8" long. Bracts tawny-edged. Seeds 

 innumerable, elliptical, minute. Jl., Aug. 



Order CLIV. ERIOCAULONACE.J:. Pipevtoeto. 



Berbs perennial, aquatic, with linear, spongy, cellular leaves, sheathing at base. 

 Fhwers monoecious or dioecious, in a denae head. Perianth 2 to G-parted or want- 

 ing. Stamens G, some of them generally abortive. Anthers mostly 1 -celled, iu- 

 trorse. Ovary 2 or 3-celled, cells 1-seeded. Seeds pendulous. 



Genera 9, apeciea 200, chiefly tropical. They are of no known use. 



GENERA. 



* Stamens (4 or 6) twice as many as the petals. (Scape 7 to 12-rlbbe(l) Eeiocaitlon. 1 



* Stamens 3, as many as the petals. (Scape 5-ribbed, puberulent.) P^epalanthus. 2 



* Stamens S, and no petals. Scape 5-ribbed, short, hairy LACiiHOGAiri.ON. 3 



1. ERIOCAU^LON, L. Pipewort. (Gr. epiov, wool, KavXog, stem.) 

 Flowers 8 , collected into an imbricated head ; involucre of many bracts ; 



,5 in the disk (rarely mixed) ; perianth double; sepals 3, subregular; 

 petals united to near the summit ; stamens twice as many as the petals ; 



? in the margin ; perianth double ; sepals 3, petals 2 or 3, distinct ; 

 stamens ; ovary sessile or stipitatc; style 1, stigmas 2 or 3 ; capsule 

 2 or 3-seeded. — 2[ Acaulcscent. Lvs. grass-like, flat, tufted at the base 

 of the slender, simple, one-headed. Anted scape. (Fls. 4-parted in one 

 species.) 



1 E. decangul^re L. Scape tall, slender, matrked with 10 ribs and furrows; 

 hs. linear-ensiform, suberect, half as long as the scape ; bracts of the depressed in- 

 volucre acute ; chaff acuminate and tipped with a white fringe as well as the 

 perianth. —Ponds, in pine barrens, S. States, common. Scape 1 to 3f high, very 

 strict, clustered. Lvs. 6 to 16' high, 3 to 4" wide. Head 5" broad, very white 

 with the fringes, the coroUas tipped with black. Jl., Aug. 



2 E. gnaphaloides Mx. Scape tall, slender, marked with 10 ribs and furrows; 

 Itts. ensiform, subulate, many times shorter than the scape, spreading; invol. de- 

 pressed ; bracts obtusish ; chaff acute, white fringed as well as the perianth. — 

 Swampy pine barrens, N. J. to Fla., common. Scape mostly single, If to 30' high. 

 Lvs. 2 to 4' long, 3 to 5" vdie, gradually tapering to an acute or setaceous point 

 Head similar to No. 1. Jn. — Aug. 



3 E. septanguldre AVitheriug. Scape slender, 1-furrowed, short or tall, and 

 weak according to the depth of the water ; lvs. linear-setaceous, pellucid, 5-veined, 

 very short ; h^ad small, globular ; bracts of the invol. obtuse. — In shallow water, 

 Can. to N. J. and Mich. Sts. clustered, 3' to 3f, filiform, reaching the surface of 

 the water. Lvs. in a small tuft, submersed. Head 2 to 3" diam., white with the 

 fringes of the compact flowers. JL, Aug. 



2. PiCPALAN'THUS, Mart. (Gr. -nai-ndXr), dust or powder, avOoq.) 

 Flowers 3-parted ; stamens in the sterile flowers 3 ; stigmas in the 

 fertile flowera 3 ; capsule 3-seeded. — Otherwise nearly as in Eriocaalon, 

 from which the genus was separated. 



