WOOTON AXD STANDLEY FLOEA OF NEW MEXICO. 175 



1. Celtis reticulata Torr. Ann. Lye. N. Y. 2: 247. 1824. 



Type locality: "Base of the Rocky Mountains," Colorado or New Mexico. 



Range: Colorado to Arizona and Texas and southward. 



New Mexico: Siena Grande; Santa Rita; Burro Mountains; Black Range; Florida 

 Mountains; Guadalupe Canyon; Organ Mountains; Guadalupe Mountains; ^^^3ite 

 Mountains. Dry hills and canyons, in the Upper Sonoran Zone. 



The berries of this tree are edible and were often eaten by the Indians. 



36. MORACEAE. Mulberry Family. 

 1. MORUS L. Mulberry. 



Ours a small scraggy tree with alternate ovate small (3 to 6 cm. long) serrate leaves, 

 these usually 3 to 5-lobed, acute; flowers dioecious, small and inconspicuous, green; 

 fruit technically a "multiple fruit," consisting of a cylindrical or oblong cluster of 

 separate 1-seeded hemes, the whole appearing to be a single fruit. 



Morus alba L. is extensively cultivated in New Mexico as a shade tree and for its 

 fruit. The trees are of two kinds, staminate and pistillate, the former being much 

 more desirable as shade trees. This species occasionally occurs as an escape. 



1. Morus microphyUa Buckl. Proc. Acad. Phila. 1862: 8. 1863. 



Morus vernonii Greene, Leaflets 2: 115. 1910. 



Morus vitifolia Greene, op. cit. 116. 



Morus goldvianii Greene, op. cit. 117. 



Morus hetulifolia Greene, op. cit. 117. 



Morus canina Greene, op. cit. 118. 



Morus alhida Greene, op. cit. 118. 



Morus crataegifolia Greene, op. cit. 119. 



Morus radulina Greene, op. cit. 119. 



Morus confinis Greene, op. cit. 119. 



Type locality: "Western Texas." 



Range: Texas to Arizona, southward into Mexico. 



New Mexico: Mangas Springs; Burro Mountains; Black Range; Dog Spring; 

 Little Florida Mountains; Dona Ana Mountains; Organ Mountains; Ruidoso; Queen. 

 Dry hills and canyons, in the Upper Sonoran Zone. 



We are unable to distinguish from typical Morus microphyUa the numerous plants 

 to which Doctor Greene's names were given. Ther.e is some slight variation in the 

 outline of the leaves, but, as shown by the extraordinary variation in those of indi- 

 viduals of Morus rubra, the species of this genus can not be separated by leaf form 

 alone. This inconstancy is strongly realized when mature leaves and those from 

 young sj^routs of the same tree are compared. There seems to be no variation in 

 pubescence. 



The tj^e of Morus vernonii came from the Chisos Moimtains of western Texas; 

 that of M. vitifolia from the Dona Ana Mountains (TT'boton & Standley in 1906); that of 

 M. goldmanii from the Little Florida Mountains {Goldman in 1908); that of M. bctuli- 

 folia from the Organ Mountains (Standley in 1906); that of M. canina from Dog Spring 

 (Mearns in 1892); that of 3f. alhida from Berendo (misspelled Berend in Doctor 

 Greene's citation of the locality) Creek {Metcalfe in 1904); that of M. crataegifolia from 

 the Blue River, southeastern Arizona; that of M. radulina from Beaver Creek, Arizona; 

 and that of M. confinis from Santa Rita Mountains, southern Arizona. 



The species is a stunted, Irregular tree 5 meters high or less, with small, scabrous 

 leaves. The red fruit is palatable when ripe, having a pleasant acid flavor. The 

 trees occur chiefly in arroyos of the foothills and on the drier slopes of the mountains. 



