COOK AND COLLINS—ECONOMIC PLANTS OF PORTO RICO. 30d 
Aquilon. See Laugeria resinosa. 
According to Captain Hansard the specific gravity of wood of *“‘aquilon ” is 0.88. 
Arachis hypogea. Pranut. Mani. 
Porto Rican peanuts are of very small size, and not many are grown. They 
are hawked upon the streets by boys, much as with us. 
Aralia arborea. See Gilibertia arborea. 
Araucaria excelsa. NORFOLK ISLAND PINE. 
This beautiful coniferous tree is a conspicuous object in gardens and parks in 
the Canary Islands, but is either very scarce or entirely absent in Porto Rico. 
That it would flourish if introduced is indicated by the fact that it has been found 
to succeed well in Trinidad. 
Arbol dela cera. See Sapiwm sebiferum. 
Arbol del pan. See Artocarpus communis. 
Arbol del sebo. See Sapiuim sebiferum. 
Ardisia./@ : 
A large genus of shrubs, or small trees, of the family Myrsinaceae. Many of 
them are fine ornamentals, and a considerable number of species appear in horti- 
cultural trade. Several of the Porto Rican species are little known, as yet, and 
should be canvassed with reference to their desirability for introduction for the 
above purposes. 
Ardisia coriacea. MAMEYUELO. 
A tree 3 to 4 meters high found in the mountains and in waste places. Also 
reported from Panama and the island of St. Thomas. (Stahl, 6: 38.) 
Ardisia crenulata. See Parathesis crenulata. 
Ardisia glaucifiora. MAMEYUELO. 
A tree of 5 to 8 meters, with leaves 8 or 9 inches (20 to 23 centimeters) long, 
leathery and finely veined. Like A. sintenisii and A. yunquensis (shrubs of 3 to 
4 meters) known only from the Luquillo Mountains. (Urban, Symb. 1: 382.) 
Ardisia guadalupensis. 
Collected by Sintenis about Coamo and near Rincon. 
Ardisia pendula. JacaNILLo. 
A tree of 5 to 10 meters from the vicinity of Cayey (Aibonito, Lares, and Manati). 
Ardisia purpurascens. 
Native names: ‘‘Quebra hacha,”’ ‘*mameyulo,’’ and *‘ hacanilla.’’ A shrub, or 
small tree, 10 meters or less in height. A variety corymbifera is known from 
Utuado and Yabucoa: a variety genuina from Barranquitas. 
Ardisia sintenisii. 
Known only from the Sierra de Luquillo. 
Ardosna jardin. See Alternanthera repens. 
Areca catechu. BETEL PALM. 
Family Arecaceae: in the western end of the island the betel palm of the Malay 
region has been sparingly introduced. A few were seen in gardens about Maya- 
guez and others in and near San Sebastian. So far as we were able to learn, the 
people do not know the name or nature of this introduced species, which is appar- 
ently planted only as an ornament or a curiosity. The form is not unpleasing. 
but the extremely deep, somber green of the foliage seems almost unnatural and 
imparts asuggestion of artificiality. 

“ The generic name Ardisia (Swartz, 1788) is antedated by Icacorea Aubl. (1775), 
but as few of the species have been transferred to this genus, they are here 
retained under their commonly accepted designations. 
23227—VOL VII, PT 2—03 
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