204 XYRIDACEAE 
than the sepal-body, erose-toothed or incised-toothed above the middle.—Low 
pinelands en swamps, Coastal Plain and rarely adj. provinces, Fla. to La. and 
Md.—(W. I.) 
9. X. elata Chapm. Leaves few, 2-6 dm. long: scape 3-12 dm. tall, 2-edged 
above: ped oblong to eonic-oblong, 16-23 mm. s pads endi. elosely 
imbrieate in many series: lateral sepals 4—5 m ong; wing n , toothed 
above the mi iddle —Low pinelands and swamps, Coastel Plain, Fla. p La. and 
N. J. 
0. X. scabrifolia Harper. Leaves few, very narrow, w scabro- 
pubertont 3-4 dm. long: scape his tue the leaves, and puberulent like 
e 1-1.5 em. long; bracts rather numerous, closely e lateral 
sepas Shani 5 mm. long; wing coe toothed above the middle.—Bogs, Pied- 
t, W Ga. 
11. X. difformis Chapm. Leaves few, ins 1-5 dm. long, smooth: seape 2—5 
dm. Ege ap ed clustered, twisted, sharply 2-edged above, smooth: spike déc 
12-18 mm. long, acute, the braets rounded: lateral sepals 4.5-6 mm. lon ng: wing 
narrow or obsolete near the base of the sepal, with a erest of fri mc extending 
S E" nee of the sepal from the tip.—Swamps, Coastal Plain, Fla., Ga., 
12. X. serotina Chapm. Similar to Ee difformis in habit. Leaves and scape 
rough rs pd pus gis. 12-18 mm. long, obtuse; bracts rounded: lateral 
sepals 4.5-5 m ong; wing broad p the base of the s sepal, with & fringed 
crest mid id ae middle ——Pineland swamps, Coastal Plain, Fla. and Miss. 
13. X. platylepis Chapm. Leaves linear, 2-6 x long: scape 5-9 dm. tall, 
2-ridged above, sometimes md rou ughened o he margins: spike ellipsoid 
or cylindric, 1.5-3 em. long; bracts very nu: D X broadly truneate or n 
so at the apex: lateral sepals a with a lacerate crest 
the middle.—Low sandy places or i Conse Plain, Fla. to La. and S. C. 
14. X. iridifolia Cha apm. Leaves few, linear, 5-8 dm. long, relatively broad: 
scape 6—10 dm. tall, stout, nearly terete or 1- -edged below, flattened and 2-edged 
above, the ed road ‘spike Ce or d ? 1.5— g; cts 
rounded: lateral sepal mm. long; rrow, incised-fimbriate its whole 
em —Shallow ponds and wet pads Coastal Plain and adj. provinces, 
. to Tex. and Ga. 
15. X. HElliottii Chapm. Leaves ae narrowly linear, grass-like, 3—10 
em. long o p acute, often twisted: scape 2—5 dm. tall, twisted, 2-edged 
throughout, or only 1-e edge ed below, roughi ish on the edges: spike oval or ellip- 
soid; bracts with wr en edges: lateral sepals 4—6.5 mm. long; wing in- 
cised. lacerate above the le or nearly entire below p terminal tuft or 
—Wet grassy eed. and swamps, Coastal Plain, Fla. to Miss. and 
S. CW. I.) 
16. X. Smalliana Nash. Leaves few, lustrous, linear, 3.5-7 dm. long, 
lower half often purplish, striate: scape 7-10 dm. tall, about twice as tall a 
the leaves, flattened, unequally 2-edged below the spike, smooth: spike ovoid or 
at matur rity ellipsoi oid, 1.5-2.5 em. long: lateral sepals 5-8 mm. long; wing 
erested with short erect segments from about the middle.—Shallow ponds, 
Coastal Plain, Fla. to La. and Ga. 
X. fimbriata Ell. Leaves not lustrous, linear, 3-5 dm. long, smooth: scape 
xum and SERIE erect, 6—12 dm. tall, roughish, and 2- -edged above: spike ovoid 
