COOK AND DOYLE-—NEW GENERA OF PALMS FROM COLOMBIA. 227 
closely associated with Iriartea in having the carpels of the young 
flowers equally developed, but the petals are narrow and separate, 
while those of Iriartea are broadly imbricate. The embryo is also 
basal instead of being lateral or apical as in most of the species 
referred to Iriartea. 
The second of the new types, also with rudimentary male flowers 
on the pistillate inflorescence, has the carpels extremely unequal, 
even more so than in Catoblastus, and entirely lacks a style. The 
sharply three-lobed, star-like stigma is seated at the base of the 
long, subcylindrical fertile carpel. The albumen of the seed differs 
from that of Catoblastus in being quite uniform, instead of ruminate. 
The third of the new forms has the sexes entirely separated as in 
Wettinia and the pistillate flowers and fruits closely crowded to- 
gether as in that genus, but the inflorescence is branched instead of 
simple, and the long, narrow petals are separate instead of over- 
lapping at the base as in Wettinia. 
The fruits of the last species, though narrowed and angled at the 
base by mutual pressure, remain shorter than those of the other two 
species, which are scattered upen the longer branches and are of a 
regular long-oval form. In all three species the surface is rough and 
hairy and the outer layer or pericarp has a loose corky texture not a 
little suggestive of that of the fruits of Manicaria and Phytelephas. 
TRIBAL DIVISION. 
Taking these additions into account, a division of the family into 
three tribes seems desirable. Though Catoblastus and Wettinia seem 
to agree in some of the characters that separate them from Iriartea 
and its immediate relatives, they are very unlike in other important 
respects. Moreover, Catoblastus and Wettinia no longer appear as 
isolated genera, but rather as members of two series of related genera, 
like those that cluster about Triartea. 
SYNOPTICAL KEY TO THE TRIBES, 
Flowers of both sexes borne on the same spadix; a single inflo- 
rescence in the axil of each leaf..........-..........24.- IRIARTEAE. 
Flowers of the two sexes in separate inflorescences; several 
inflorescences from each axil. 
Flowers and fruits scattered on the numerous slender 
branches of the inflorescence; styles short or wanting. CATOBLASTEAE. 
Flowers and fruits densely crowded on the thickened simple 
or few-branched spadix; styles long and slender.... WETTINIEAE. 
