COOK AND COLLINS—ECONOMIC PLANTS OF PORTO RICO. 171 
Japanese medlar. See ELriobotrya japonica, 
Jasmin. See Jasminum pubescens and J. officinale. 
Jasmin del rio. See Cleome spinosa, 
Jasmin hediondo. See Clerodendron fragrans. 
Jasminum officinale. Jasmin. 
Family Oleaceae; a climbing shrub, cultivated in gardens. Introduced from 
Asia. (Stahl, 6: 63.) 
Jasminum pubescens. JAsmMIN. 
A biennial shrub, introduced from India, and cultivated in gardens. Reported 
from Sierra de Naguabo and near Rio Blanco, about dwellings; apparently spon- 
taneous. Noted by us at Caguitas and at Juana Diaz. (Stahl, 6: 62.) 
Jatropha curcas. TarTaqo, PLATE XLII. 
Family Euphorbiaceae; reported from near Pefiuelas. This is a shrub about 8 
feet high, and is called ** physic nut’’ in Jamaica, where the seeds are used as a 
purgative. The juice of the leaves is said to act as a resolvent, The black beans 
are similar to those of the castor-oil plant; they are ground up, boiled in water, 
and used as a remedy for diarrhea. 
Jatropha gossypifolia. HIGUERETA CIMARRONA. 
Occasional as a weed in waste places, particularly in sand banks alorg water 
courses, The common name was noted at Coamo Springs, and, doubtless, alludes 
to the similarity tothe castor bean, Ricinus communis. 
Java plum. See Syzygium jambolanun. 
Javillo. See Hura crepitans. 
Jaya. 
A tree from all parts of the island; height, 30 to 35 feet (9 to 11 meters); diam- 
eter, 10 to 12 inches (25 to 80 centimeters). Wood, yellow, hard; specific gravity, 
0.778; not used, (Exp. 1857.) 
Jerusalem thorn. See Parkinsonia aculeata. 
Jiba. See Hrythroxylon brevipes and other species of the same genus. 
Jicama. See Calopogonium caeruleum. 
Jimson weed. See Datura stramonium. 
Jobo. See Spondias lutea. 
Job’s tears. See Coix lachryma-jobi. 
Juan caliente. See Rourea glabra and R. frutescens. 
Jucare. 
Given by Hill as a variation of the name ‘“ ucar.”’ 
Juglans cinerea. NuEz. 
A tree growing wild in the interior of the Greater Antilles and on the Continent. 
It reaches a height of 40 to 45 feet (14 to 15 meters), with a straight, rather 
long trunk 18 to 24 inches (45 to 60 centimeters) in diameter. Furnishes a 
good, though rather porous wood, with the properties of the European walnut; 
is dark red in color, and breaks with a vertical fracture. It is employed for 
boards and timbers in housebuilding. (Grosourdy, 2: 403.) See also note 
under Nues. 
This species, the common butternut of the United States, is not known to occur 
in Porto Rico, and this author’s identification is probably in error. 
Juglans insularis. 
According to the Kew Bulletin for 1894, specimens collected by Sintenis near 
Adjuntas and distributed from Berlin as Juglans jamaicensis belongs to J. insu- 
laris, a species previously known from Cuba. 
