IXIACEAE 353 
79. I. Wherryana Small Flower- ~ erect, stiff, strict: sepals 9—10 e 
long, the claw suffused with green, t e blade ov ate, light-violet, the a 
orange-yellow, surrounded by a radial p of pale-yellow paling to whitish- 
yello ende it merges with the blade-color, all prominently 
veined red-violet: petals p much shorter than the sepals, the sh a 
greenish at t se, suffused with light red-violet above, the blade pale-violet 
ine h lave 
pink; appendages flushed greenish beneath, sharply toothed: anther-tips in- 
cluded: capsule not seen.—Swamps, marshes, and ditches, S La.—Spr. 
80. I. citricristata Small. Flower-stalk erect, stiff, strict: os 8-10 cm. 
long, recurved, the claw suffused with yellow- -green, "but pale on the edges, and 
lined in the middle, the blade oval- kei slightly longer than the claw, of a 
1 
violet-blue ground-color, the erest lemon, surrounded by -lemon zone, with 
m h ender flecks w re Hip with the lade-col petals 
e -spatulate, much o than the sepals, the claw often yellow-green at 
the y. base, whitish above and with red-violet lines, the blade violet-blue, 
emos p suffusion of n pan rple Eu noun ng up from the claw: style-branches 
violet, the wings pale-margined ; appendages violet, deeply and sharply lacerate- 
j ed: | e = a E E o = 
a.—Spr.—This species and I. giganticaerulea a wo most abundan 
and widespread of the Louisiana group, often fò a pa fields of mede 
solid growth. There are albinos of both species. 
81. I. alticristata pi iiid stalk erect, strict and rigid: sepals re- 
curved, within, the claw cream, veined greenish-yellow, the midrib rich-yellow 
above middle, cream >e , the e wings ird flecked violet on upper half, the 
bla de ee the crest a ery prom t, high ridge, rich-yellow, extend- 
ing halfway down the blade, the T E n blotches and flecks of 
light- yellow, each outlined with rel. the median term E P in a ridge 
of deep-violet, the cre s -zone flecked all over with white; outside, the margin 
violet, peice overlain greenish- ene the claw pale yellow-green, cream- 
margi ined: petals Jark-violet, with a and of deep violet down channel, the 
wings whitish-margined towards the claw, the claw- channel deep red-violet; 
ial ma 
u half 
Ppt Skea the Pii yellow-green: M iyo dark, smoky purple 
wings, keel, and body becoming white on lower portion; appendages dull 
Sla volt, iue cee -toothed at apex, prs shallowly toothed otherwise, 
flushed ereamy at base beneath: anther-tips equalling the stigmas: eapsule not 
se pega ue and marshes, S La.—Spr. 
82. I. aurilinea Alexander.  Flower-stalk erect, rigid and strict: sepals 
sur ei. -spreading, within, the elaw apparently yellow, but so heavily oe 
flushed, and spotted with brown- -rose, that the yellow i is on iy visible at base, the 
midrib "yellow , the blade od around EE towards the margin, sao 
great masses of brown spots are er ov er the crest zone upper claw; with- 
out, dull brownish red-purple E su PUF on ree zone and claw: petals 
light, smoky DRE the lower channel orange-brown streaked, the blade 
eovered with pale-orange fushin ge style bee with a yellowish ground 
color, heavil flush. scaled dull, brownish-rose with a heavy underflushing 
T - 
83. I. fluviatilis Sm Flower-stalk erect, striet and rigi id: sepals re- 
eurved, within, the spe pale whitish-green, ' veined pm the blade 
