204 CONTRIBUTIONS FROM THE NATIONAL. HEEBAEIUM. 



The Spanish name for the mulberry fruit is " mora " ; for the tree, " moral " ; 

 the n;ime " morera " is applied to tlie white mulberry tree. Asiain gives the 

 Huastec name for mulberry tree as " tzitzi." According to Belmar, the Mixe 

 names are " hamdek " (fruit) and " hamdek-kiup " (tree). 



Pistillate spikes elongate, lax, many-flowered ; leaves thin, scarcely or not 



at all scabrous on the upper surface, glabrate beneath__l. M. celtidifolia. 



Pistillate spikes short, dense, few-flowered ; leaves thick, very scabrous on the 



upper surface, copiously pubescent beneath 2. M. microphylla. 



1. Morus celtidifolia H. B. K. Nov. Gen. & Sp. 2: 33. 1817, 



Morns mexicana Benth. PI. Hartw. 71. 1840. 



Mortis mollis Rusby, Bull. Torrey Club 38: 145. 1911. 



Coahuila to Veracruz and Oaxaca ; reported from Yucatan. Guatemala and 

 Costa Rica ; Colombia to Peru ; type from Ecuador. 



Tree, 5.5 to 9 meters high; leaves oval-ovate, 5 to 15 cm. long, bright 

 green, cuspidate-acuminate; fruit at first red but finally black. The fruit is 

 known generally as "mora," the tree as "moral"; " palo moral" (Oaxaca); 

 " yaga-biyozaa " (Oaxaca, Zapotec, Reko) ; " brasil" (Costa Rica). 



The species is somewhat variable in leaf form and in size of fruit, but with 

 the material available it does r.ot seem necessary to recognize either of the 

 segregates. This is perhaps the species to which Sesse and Mocino^ apply the 

 name " Morus tartarica," although it is not certain that they do not refer to 

 one of the introduced species. It is probably to this tree that Sahagiiin 

 refers : " In this country [New Spain] there are mulberry trees. They are 

 Called amacapnUn [paper cherry]. This tree is smooth and branched. The 

 branches are very numerous, and the leaves are crowded and green, a little 

 paler beneath. It produces mulberries a little smaller than those of Castile." 

 In Ecuador the wood of this species is said to be valued for building purposes. 

 2. Morus microphylla Buckl. Proc. Acad. Phila. 1862: 8. 1863. 



Mortis microphilyra Greene, Leaflets 2: 120. 1910. 



Chihuahua to Durango. Southern Arizona to western Texas (type locality). 



Small tree, 4.5 to 7.5 meters high, with a trunk 30 cm. in diameter, the crown 

 dense and compact, or often a shrub in IMexico ; bark gray, furrowed, covered 

 with small scales ; fruit 1 to 1.5 cm. long, red or finally black ; wood hard, close- 

 grained, elastic, light brown, its specific gravity about 0.77. " Mora," " moral." 



The wood is used to a small extent in Mexico by carpenters, and was employed 

 by the Indians of Texas for bows. The fruit is rather sour and varies in size 

 according to the amount of water the tree receives. It is sometimes found in 

 markets. 



This species may not be distinct from the preceding one. The leaves are 

 very variable and often deeply lobed, especially on young shoots. 



3. TBOPHIS L. Syst. Nat. ed. 10. 2: 1289. 1759. 



Reference : Bureau in DC. Prodr. 17: 251-254. 1873. 



Trees, unarmed ; leaves deciduous or persistent, entire or dentate ; flowers 

 dioecious, green, spicate, racemose, or paniculate ; fruit small, subglobose, with 

 thin flesh and a large seed. 

 Fruit smooth, sessile or short-pedicellate ; leaves usually more than 3 cm. wide. 



1. T. racemosa. 



Fruit tubereulate, long-pedicellate ; leaves 3 cm. wide or less 2. T. mexicana. 



1. Trophis racemosa (L.) Urban, Symb. AntilL 4: 195. 1903. 



Buccphalon racemosum L. Sp. PI. 1190. 1753. 



Trophis arnericana L. Syst. Nat. ed. 10. 2: 1289. 1759. 



* PI. Nov. Hisp. 160. 1S87. 



