KKIOCAULACEAE. 91 



Family!. XYRIDACEAE Lindl. Yellow-eyed Grass Family. 



1. XYRIS L. Yellow-eyed Grass. 



Lateral 8ej)als wingless, the keel friuged with short hairs. 



1. X. flexuosa. 

 Lateral sepals winged, the keel fimbriate or lacerate. 



Scapes not bulbous-thickened at the base ; leaves flat or but slightly 

 twisted. 

 Lateral sepals about as long as the bracts, their keels lacerate. 



2. X. Caroliniana. 

 Lateral sepals longer than the bracts, their keels long-fimbriate. 



3. X, -fimhriata. 

 Scapes conspicuously bulbous-thickened at the base ; leaves spirally 



twisted. 4. X. conocephala. 



1. Xykis flexuosa Muhl. M. p. 235. Bogs. Summer. 



2. Xyris Caroliniana Walt. M. p. 236. Swamps and bogs. Summer. 



Philadelphia — Wissahickon (i\le.). Delaware — Tin'mum., Dr. Geo. 

 Smith (Fu.) (B. Sm.). C/iesJer— Coatesville, II. K. Stone (B. C). 

 Lancaster — (?.)• 



Burlington — Atsion (Fr.). Camden— Camden, Mart. (B. C), Ateo 

 (Fr.), Cedar Brook (Ja.). Gloucester — Mickleton (He.), Repaupo (Ja.), 

 Tomlin (Ke.), Swedesboro (Li.). Cape May — Cape May (Te.). 

 Atlantic— Egg Harhor (Sa.) (Wn.). Ocemi— Forked Eiver (Le.) (Mac). 



New Castle — Thorn jisons, Ogletown, etc. 



3. Xyris fimbfjata Ell. M. p. 236. Wet pine barrens. Summer. 



Btirlingtov— Quaker Bridge, E. Diffenbaugh (B. C.) (Fu.) Atsion, 

 Jackson (C). Gloucester — Paulsboro (Ja.), Repaupo (Li.). Atlantic — 

 Hammonton (C), Egg Harbor (Mac). 



4. Xyris conocephala Sauv. M. p. 236. In dry pine-ban-ens. Early 



summer. 

 Burlington — Batsto, Taunton (C), Woodmansie (He.). Atlantic 

 Hammonton (Cr.). Ocean — Forked River (He.). 



Family 2. ERIOCAULA.OEAE Liiidl. Pipe- wort Family. 



I. ERIOCAULON L. Pipe-wort. 



Leaf -blades as long as the sheaths, coarsely 3-9-fenestrate-nerved; scapes 

 7-angled ; heads 3-6 mm. in diameter. 

 Heads densely pubescent, outer flowers spreading, scales reflexed, scape 

 slender. 1. E. septangulare. 



Heads nearly smooth, flowers and scales all erect, scapes stout. 



2. E. Parkeri. 



Leaf-hlades shorter than the sheaths, finely 6-20-fenestrate-nerved ; scapes 



10-12-angled; heads 6-12 mm. in diameter. 3. E, compressum. 



Leaf-blades much longer than the sheaths, finely 10-50-nerved; scapes 10-14- 



angled; heads 8-lG mm. in diameter. 4. E. decangulare. 



1. Eriocaulon septangulare With. M. p. 237. In ponds or along their 

 borders. Summer. 

 £mcAs— Bristol, Mart. (Fr.). 

 New Jersey — Common. 

 Neiv Castle — River shore and St. George's. 



