ILLUSTRATIONS 
[In all of the plates the fruits and seeds are natural size, and the male flowers are 
enlarged 7 diameters. All the figures are reproduced from camera-lucida drawings by 
the author.] 
PLATE I 
FiG.1. Areca Catechu Linn. (semisilvatica). Vertical section of a fruit, 
preserved in alcohol, collected by L. S. Gibbs in a semiwild con- 
dition at Tuaran at the foot of Mount Kinabalu in British North 
Borneo. This and Plate II, figure 1, although not presenting 
Philippine specimens, are here given to show the commonest 
Malayan forms of the fruits of A. Catechu, for comparison with 
the Philippine ones. 
2. Areca Catechu Linn. var. silvatica Becc.; a, fruit entire; b, vertical 
section of the fruit, showing one side of the seed, entire, in situ; 
c, vertical section of the seed; d, e, male flowers; f, section of a 
male flower, showing one petal and its respective two stamens 
and the rudimentary ovary. From Merrill 9447, collected in 
Palawan. 
3. Areca Catechu Linn. (forma communis); a, vertical section of the 
fruit, showing one side of the seed, entire, in situ (from a 
specimen collected at Lucban, Luzon, Elmer 9295 in Herb. Bec- 
cari) ; b, male flower; c, section of a male flower, showing one petal 
with its respective two stamens, and the rudimentary ovary (from 
Mearns & Hutchinson 4717, collected in Mindanao). 
PLATE II 
Fic. 1. Areca Catechu L. var. alba Bl.; a, vertical section of the fruit, 
' showing one side of the seed, entire, in situ; 6, male flower; 
c, section of a male flower, showing one petal with its respective 
two stamens, and the rudimentary ovary. From a plant cultivated 
in the botanic garden at Buitenzorg. 
2. Areca Catechu L. var. longicarpa Becc.; a, vertical section of the 
fruit, showing one side of the seed in situ; b, a male flower; 
c, section of a male flower showing one petal with its respective 
two stamens, and the rudimentary ovary. From McGregor 10470, 
collected in Polillo. 
3. Areca Catechu L. var. portoricensis Becc.; a, vertical section of the 
fruit; 6, male flower; c, section of a male flower showing one 
petal with its respective two stamens, and the rudimentary ovary. 
From Sintenis 5749 in the Berlin Herbarium. 
I have given here a figure of the fruit of this very anomalous 
American variety of Areca Catechu, because of its great resem- 
blance to the fruit of the Philippine A. macrocarpa and of the 
variety longicarpa of A. Catechu. The figure is drawn from 
Sintenis 5749 from plants cultivated near houses in the vicinity 
of Aquadilla, Porto Rico; which specimens have been referred by 
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