194 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Moral. See Cordia macrophylla. 
A tree from all parts of the island; height, 45 to 50 feet (13 to 15 meters); diam- 
eter, 20 to 25 inches (50 to 62 centimeters). Wood light, soft; specific gravity, 
0.611; not used. (Exp. 1857.) (Grosourdy, 2: 402.) : 
Captain Hansard thought this might be the mulberry, Morus nigra, the leaf 
being similar, though the fruit is different. Specific gravity, 0.57. 
At Coamo Springs another species of Cordia is known Under this name. It is 
quite different from C. macrophylla and seems to have affinity with C. collococca. 
Moralon. See Coccolobis grandifolia. 
Moriche. See Mauritia flexuosa. 
Moringa moringa. HORSE-RADISH TREE. BEN. 
Family Moringaceae; a tree 3 to 4 meters high, native in India; reported as 
introduced and escaped from cultivation in Cuba and probably also in Porto Rico. 
At Catano and also.at Isabella it was called ‘‘angela”’ or angel tree. It yields the 
so-called oil of ben, used for fine lubricating purposes. The root has the taste and 
odor of horse-radish. Sintenis collected a specimen distributed as M. oleifera in 
a garden at Mayaguez. (Stahl, 2: 43.) 
A specimen 20 feet (6 meters) high, with a trunk 8 or 10 inches (20 or 25 centi- 
meters) in diameter, was seen between Yauco and Guayanilla. 
Mori-vivi. See Mimosa pudica. 
Other fine-leaved leguminous plants, such as Aeschynemene americana are also 
sometimes called mori-vivi or mori-vivi bobo. 
Morongia distachya. CUERNECILLO. 
A much-branched, trailing, spiny shrub reported by Stahl from the south side 
of the island. (Stahl, 3: 136, as Schrankia distachya. ) 
Morongia leptoclada. SALcInua. 
Collected at Coamo Springs (No. 726). <A less spiny species than distachya, 
according to the specimens in the National Herbarium. 
Morus. MULBERRY. 
No mulberry trees were noticed in Porto Rico, but in Cuba experiments are 
said to have shown that both the mulberry and the silkworm thrive extremely 
well. 
Mostacilla del mar. See Cakile maritima. 
Mostaza. See Brassica juncea. 
Motillo. See Sloanea berteriana. 
Mouriria. 
Family Melastomaceae: a species thought to be related to Mouriria spathulata 
was collected at Hatillo by Sintenis. The lower side of the leaves is yellow. 
Mouriria domingensis. Murra. 
A cultivated shrub, 3 to 5 meters high. The agreeable fruits are eaten raw and 
are used to color liquors. (Stahl, 4: 91.) 
Mucuna altissima. 
Family Viciaceae; a leguminous vine, related to the velvet bean; known from 
Yabucoa; also from the vicinity of Ponce. (Sintenis.) 
Mucuna pruriens. CowHaGe. PICA-PICA. 
The pods of this leguminous plant, which is a close relative to the ‘velvet bean, 
are covered with a dense growth of fine, rather stiff, poisonous hairs, said to be 
extremely irritating when brought in contact with the more sensitive parts of the 
skin. (Stahl, 3: 84.) 
Mucuna urens. OJO DE BUEY. 
A woody, biennial vine, growing in waste places. Bello gives ‘‘matos”’ as the 
common name of this species. (Stahl, 3: 85.) 
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