COOK AND DOYLE—NEW GENERA OF PALMS FROM COLOMBIA. 229 
Leaves S to 12 in a head, largest in the middle, tapering gradually toward 
base and tip; leaf bases 120 cm. long by 50 cm. broad at base, splitting into 
numerous fragile fibers; petiole short, 16 to 18 cm. long by 4 cm. in diameter ; 
lower surface rounded and covered with dark brownish tomentum; upper sur- 
face rounded and also tomentose, excepting a central strip 1 cm. wide, light 
green in color, free from tomentum or scurf and running the entire length of 
the petiole. 
Rachis 850 em. long by 4 cm. in diameter at base, gradually tapering toward 
the tip; lower surface rounded, becoming flat toward the tip, sparsely covered 
with greenish tomentum; upper surface with a prominently rounded central 
ridge 6 to 8 mm. wide at base, gradually becoming narrowed to a sharp ridge ; 
on either side of this median ridge a shallow groove, in this the pinne inserted ; 
the surfaces of these grooves, as well as of the central ridge, marked with about 
12 longitudinal, slightly elevated ridges or striations, these 1 to 2 mm. apart, 
covered with very loosely adherent, brownish, scurfy material easily detached 
with the finger; toward the end of the leaf the grooves becoming shallow and 
disappearing ; below each pinna for a distance of about 2 cm. the rachis entirely 
free from scurf or tomentum, but the striations still distinct; these naked spots 
of much lighter color and visible at some distance from the tree; upper central 
ridge slightly lighter in color than the grooves, toward the end of the leaf taking 
on the same color as the naked spaces below the pinne; striations and naked 
spots also disappearing toward the end of the leaf, the last three or four pinnae 
thus inserted on a comparatively smooth rachis. 
Pinne 33 or 34 on each side, consisting of 11 to 18 segments; upper surface 
dark green; lower surface slightly lighter, smooth; midribs very prominent on 
the under side, raised 1 to 2 mm. above the surface and of much lighter color; 
segments of pinnze unequal, premorse, the lower segments of each pinna being 
the longest; lowest pinne 34 cm. long by 7 cm. wide, consisting of 7 or 8 seg- 
ments 1 em. or less in width, 1.5 cm. wide at point of insertion; middle pinne 
105 em. long by 16 em. wide at the broadest part, 5 cm. wide at base, consisting 
of 15 segments 2 cm. or less in width; terminal pinne 28 to 34 cm. long by 
10 to 15 em. broad, becoming 19 to 24 cm. wide at insertions, consisting of from 
12 to 16 segments 2 em. or less in width. 
Inflorescence infrafoliar, 105 cm. long; peduncle 36 cm. long by 6 cm. wide at 
base, the fruiting portion 10 cm. long by 2 cm. in diameter; branches 5, the 
longest 59 cm. by 1.5 cm.; peduncle and bases of branches densely hirsute; 
flowering portion when young with a very sparse covering of long, gland-tipped 
hairs, these also occurring on the petals and pistils; between the hairs the sur- 
face appearing naked, but seen to be very minutely papillose under sufficient 
magnification; flowers inserted in depressions, these continued on each side to 
form a distinct transverse groove accommodating the rudimentary male flower. 
Spathes 5, the outer 12 cm. long; inner spathe densely covered, when young, 
with soft silky hairs 2 mm. or less in length. 
Fruits 40 to 50 on each branch, ovoid or slightly flattened on one side, 5 cm. 
long by 3 cm. in diameter or less, covered with closely adherent grayish hairs 
like those on the branches and peduncle; pericarp corky, 5 mm. thick, tough; 
kernel 8 em. long by 1.5 cm. in diameter, ovoid or slightly fiattened, the outer 
surface covered with a web-like coating of closely adherent fibers. 
Type in the U. 8S. National Herbarium, nos. 690426-690428 (all from one 
tree), collected in deep, marshy forests about Cordoba, Cauca, Colombia, by 
Cc. B. Doyle, December, 1905. 
Native names, “zancona” or “zancuda,” meaning “stilt’’ or “ mosquito ” 
palm, evidently in allusion to the long aerial roots. Also called ‘“ crespa,” 
perhaps with reference to the stiff leaves or to the hairy fruits. 
