OsDsai 155.— CTPBRACEA 741 



ing like a continuation of the scape, tlirioe longer than the other; glumes 00, 

 with a short, recurved or squarrous point, finally brown ; ach. minute, of a dvill, 

 brownish-white. — Sandy banks, N. Eng. to Penn., Ky. and S. States. (Isolepis, 

 Sohrad.) • 



9. LIPOCAR'PHA, Brown. Spikes many-flowered ; glumes spatu- 

 late, imbricated all around ; interior -scales 2, thin, subequal, involving 

 tbo flower and the fruit ; perianth none; stamens 1; style 2 or 3-fid ; 

 acheniura coated with the scales. — Culms leafy at base. Spikes numer- 

 ous, collected into an involucrate, terminal head. 



Ii. maculata Torr. Culms triangular, 3 to 8' high, longer than the narrowly 

 linear, often involute, smooth leaves; invoL of 2 long Ivs. and 1 short one, spikes 

 3 or 4, ovoid, acute, closely aggregated ; glumes very numerous, acute, narrowed 

 to the base, white hyaline, marked with red dots, green along the midvein, longer 

 than the 2 interior scales (spikelet^l; stamen 1 ; style bifid, longer than the tawny, 

 oblong aohenium. — Wet grounds, Ga. to Fla. (Kylliogia Mx) 



10. FIMBRIS'TYLIS, Valil. (Lat. fimbris, a fringe, stylus, style;" 

 from the ciliate style.) Glumes imbricated on all sides ; bristles ; 

 style compressed, 2-cleft, bulbous at base, deciduous, often ciliate on the 

 margin. — U With the habit of Scirpus. Lvs. mostly radical. 



I Spikes in a subsimple umbel, rusty brown, few, as thick ns a pepper-corn Nos. 1, 3 



I Bpikea in a dense head. Invol. very long. (No. 3.) Spilces 2 only, lateral, (No. 4). Nos. 8, 4 



1 F. spadicea Tahl. Culm 1 to 3f high, hard and rigid, flattened, channeled ; Iva. 



^ semi-terete, filiform, channeled; umbel of few rays, longer than the 2 or 3 subu- 

 late lvs. of the InvoL ; spikes few, ovoid-oblong becoming oblong-cylindric, when 

 old, 3 to 6" long, 2" thick; glumes broad-ovate, mucronato, rust-colored, finally 



. dark chestnut brown ; stam. 2 or 3 ; style fringe-pubescent ; ach. wMtish, min- 

 utely doited. — Marshes, N. T. to Fla. TV. to IlL (Lapham). Jl. — Sept. (F, cas- 

 taneus Mx.) 

 /?. FEERUGINBA. Umbel of many rays, somewhat compound. (F. ferrugineus 

 Vahl.) 



2 P. lasa Vahl. Culm 2 to 12' high, flattened, striate; lvs. flat, linear, glavfiovs, 

 rcmgh-edged, shorter than the culm ; umbel few-rayed, shorter than one of tbo 

 leaves of the involucre ; spikes ovoid, acute, 3" long ; glumes ovate, brown ; 

 stamen 1; sty. dark purple, fringed; ach. whitish, with 6 to S prominent ridges 

 lengthwise. — Clay soils, Penn. to 111. and S. States. Jl. — Sept. (F. Baldwinii 

 Torr.) 



3 F. arg^ntea Tahl. Glaucous; culms tufted, 2 to i' high, setaceous, com- 

 pressed ; lvs. radical, filiform, as long as the culms ; spikes 5 to 8 cylindric-oblong, 

 acute, sessile, straw-colored, in a dense head; invol. 3 or 4-leaved, many tiimea 

 longer than the head, usually longer than the culm ; glumes 20 or more, lance-ovate, 

 mucronato ; stam. 1 ; sty. 2-eleft, ciliolate ; ach. white minute. — Ga 1 to La. (P. 

 congesta Torr.) 



4 F. distachya Chapman ? Culms setaceous, leafless, tufted, 3 to 4' high ; 

 spikes 2, globular-ovoid, lateral, sessile near the top of the culm, 1'' long, dark 

 brown; glumes very numerous; sty. 2-clefl;; ach. minute, but as long as the 

 glume. — Mid. Fla. (Chapman. It is Hemicarpha subsquarrosa Nees.) 



11. TRICHELOS'TYLIS, Listiboudois. (Gr. Tpixn^-og, threefold, 

 OTvXog ; from the character.) Glumes in 4 to 8 ranks, carinate ; bris- 

 tles none ; style 3-cleft, deciduous below the. bulb (if any) at the base ; 

 acheniurn triangular. — ^ Sts. leafy at the base. Spikes in a terminal 

 head or umbel. 



8 Spikes in a componrd nmbcl, oblons, ferruginons Nos. 1, S 



I Spikes iii a subsimple umbel, 2 to 4 to 0, chestnut coloicd No. » 



i Bpikesin a dense head, greenish. Invoincre leaves ddntert at base Nos. 4,6 



I Spike soliUiy, greenish, later.il ne,lr the summit of the culm No. « 



1 T. autumndlia. Culm compressed, 2-edged, ciEspitous, leafy at base, 3—10' 



