Palms of British Guiana. 
267 
A. tiicama, Mart: var ? 
Local Names. 
True Carib Tucumou. 
Arawak Acque-ero. 
This and the following species (A. tucumoides, Drude) 
resemble each other closely in general character, yet 
differ, chiefly, and greatly, in size, and in habit of 
growth — one producing only a single stem while the 
other produces several to each plant — the same distin- 
guishing characters in fa6l that the rayhoo and manicole 
separately exhibit. It will be well to give the measure- 
ments of the two in the following form, in which they 
may readily be compared. 
A. tucuma, Mart: 
A. tucumoides, Drude. 
Single stem. 
Several stems. 
ft. 
nch. 
ft. 
inch. 
Height of stem ... ...37 
O 
33 
O 
Girth ,. at root... 2 
6 
1 
II 
„ „ half way 
up ... ... ... 2 
3 
1 
8 
,, ,, at top ... 2 
9 
1 
8 
Length of leaf to lowest 
pinnse ... ... 6 
6 • . 
,. 
6 
3 
Length of leaf from lowest 
pinnae to top ...17 

1 1 
6 
Breadth of leaf at broadest 8 
0* 
6 

„ pinnae 
2h 
Length of spathe... ... 9 
8 
7 

,, spike (rachis) 9 
6 
6 
10 
Breadth of spathe 
8 
Length from base of rachis 
to lowest branch ... 4 
8 
Fruit smooth, larg 
sr than 
that 
of A. tucumoides. 
* The longest pinnse equal 4ft. 6ins. ; but these stand at such an 
angle to the mid-rib that the whole breadth of the leaf is but, as above 
given, 8ft. 
LL 
