IXIACEAE 
Perianth lavender: sepal-blade nearly as broad 
as long. 
Perianth p uere sepal-blade much longer 
than 
ar vello ists green, deeply cleft, extend- 
barely into the base of bl ade. 
Crest Seid only notched, extending well 
into the blade. 
Perianth p -violet, red: violet, or purple. 
Perianth red- vo olet 
Perianth deep-viole t. 
Sepal- blade yeaa as wide as ine: 
Sepal-blade much longer than wide. 
IV. UNICRISTA 
Sepal- nog truly solitary, not even ins eres "iere 
nt. 
Perianth fulvous, orange-red, or orange. 
Crest crimson or carmine. 
Crest yellow. 
Perianth arg or salmon-colored, the veins not 
promin 
Perianth orange-red or orange: the veins very 
pr 
Pehianth. ent or orange-red: crest clear 
ellow. 
Pe eria nth pinkish- orange or smoky-orange: 
rest greenish. 
Perianth otherwisely colored. 
Perianth verging towards pink and reddish VE 
Petals drooping: perianth various shades of 
mauve or pin 
Petals Pi ,Dérianth various shades other 
Sepal- blade Te times as long as claw 
nth evenly colored, the flower ETT 
crest extending nearly half 
Perianth heavily flushed orange on 
ES portions Jof sepal-blades, petals, 
an style-branches flower rose- 
ented: crest es tendihe only % the 
len gth of the blade. 
PEDE blade not over twice as long as claw. 
rianth intense v e me 
urpie 
* : 
Perianth not vinaceous. 
Sepal-blade very 
ben with brown: 
ow 
Sepal- blade not pocos veined: 
crest Ton k-yellow 
Perianth violet or laven 
Sepal-blade sharply differentiated from claw. 
Perianth lavender or white, 
Perianth dark violet-blue. 
Sepal-blade tapering gradually into claw. 
Sepal- i: t not truly solitary, rudimentary laterals 
prominently 
crest yel- 
Perianth violet-purple or rose: 
times as long as the claw 
ron wine-red: sepal- -blade not over twice as long 
sepal-blade fully 3 
V. LANCICRISTATAE 
Crest present as a raised ridge 
Crest- n only one well developed on either side. 
Per n some shade o ron om or brown-red. 
anth not m a ins ned. 
Gros latovalg a out very sharply 
from blade-color: perianth orange-rose. 
Crest: laterals _indistinetly outlined: peri- 
nth brownish-r 
Perianth markedly ve 
n 
Perianth OaS, flushed LM pale 
e near base of blades 
jt 
oo 
nM 
n 
29. 
. I. fuscirosea. 
4. 
T. 
. I. chlorotopha. 
. I. acleantha. 
. I iophaea. 
. I. ludoviciana. 
. I. ianthina. 
. I. violivenosa. 
. I. pyrrholopha. 
I. salmonicolor. 
. I. fulvaurea. 
6. 
I. fumifulva, 
I. fumiftora. 
. I. moricolor. 
. I. fuscaurea. 
. I. purpurissata. 
. I. viridivinea. 
. I. fuscivenosa. 
. I. crocinubia, 
. I. miraculosa. 
I. atrocyanea. 
. I. tyriana 
I ainlimarnaron 
i £ £ 
. I. vinicolor. 
I. rosilutea. 
333 
