332 IXIACEAE 
Crest extending but a short distance 
into the sepal- pe split down- 
ward from the ex by a dark 
median lin 
Crest extending well into the sepal- 
blade, with an acute or acuminate 
Crest with one or re laterals on 
either side of median. ae ay 
demarked from it, and radi- 
ally spreading. 
Crest rh several radially spreading 
aterals. 
Crest-zone not surrounded b 
ing streaks EM dots or by 
a sharp outli 
Crest median acute or acumi- 
nate, not apically cleft. 
s S ees split downward 
the ape x by a dark 
medi ian lin 
Crest-zone surrounded by a white 
i 
fro 
Capsule sharply six-angled; flower-stalks zig- 
zag; erect or reclinin 
Hypanthium surrounding the ovary three-angled ; 
main bract of the etre involucre much 
igma ed 
indehiscent, often decaying ie release 
seeds. 
Hypanthium and capsule Sharply three-angled ; 
PE slender and muys capsule dehis- 
ent by M iss e apical valves. 
Petals present, but almost rudimentary and half-hidden 
by Mie claws which far exceed them 
Perianth vio violet-blue, or white dn albinos, 
e - 
Perianth yellow, or cream color in noe T sepal- 
crest outlined by black streaks. 
I. FUL 
Plant relatively slender, erect: sepals aa pare short 
claws: petals scarcely clawed. 
II. EcRISTATAE 
Slender plants with purple or red-purple flowers: sepals 
M A etals rather long and slender: the sepals not 
III. BICRISTATAE 
iia drooping immediately upon opening: color of 
ds ae extending down into the upper part of 
I raf exserted: crest clear- colored except for 
median cleft. 
Ern th red, orange-red, or copper-red. 
nth mauve, violet, or purple. 
Asics E er rest muddied throughout with 
dark blote 
Petals erect or Soreadin ng, not drooping until late in the 
ay, if a! x eolor of sepal-blade and claw mark- 
Perianth S lavender, or purple. 
Perianth lavender or pale-violet. 
IIT. BICRISTATAE. 
IV. UNICRISTATAE. 
V. LANCICRISTATAE. 
VI. TRICRISTATAE. 
VII. CORONICRISTATAE. 
VIII. RADIICRISTATAE. 
IX. HEXAGONAE. 
X. VERSICOLORES. 
XI. PRISMATICAE. 
XII. TRIPETALAE. 
XIII. PSEUDACORI. 
1. I. fulva. 
2. I.ecristata. 
. I. subfutva. 
I. regifulva 
5. I. rubea. 
B OO 
6. I. rosiflora. 
