120 SOME SOUTHWESTERN MULBERRIES. 



known in the genus, and uniformly devoid of lobes and sinuses, 

 their outline subcordate-ovate, ^ to iK inches long, incisely 

 and sharply serrate, and, for the size of the leaf coarsely so, 

 the apex cuspidate, but hardly acuminate, the upper face dull, 

 very roughly muricate-scabrous and with scarcely visible veins, 

 the lower of a bright yellowish green, the much lighter veins 

 and veinlets raised and very conspicuous, hispidulous with 

 short hairs, the general area only sparsely and obscurely 

 muriculate. 



Santa Rita Mountains, extreme southern Arizona, C. G. 

 Pringle, April and May, 1881. A sterile branch from the 

 same locality, by David Griffiths, 1902, has nearly all its leaves 

 regularly 5-lobed. Presumably it represents the same species. 



MoRUS MiCROPHiLYRA. Branches rather slender and tor- 

 tuous, yellowish-brown and glabrate, but twigs of the season, 

 as well as the short petioles and slender pedicels of the fruit 

 quite villous : leaves of fruiting branches much diversified as 

 regards width but none lobed, mostly of very broad cordate- 

 ovate outline, some almost suborbicular, the more rounded 1 

 inch long and of the same width, the more ovate iH inches 

 long by 1 inch broad, all rather evenly and lightly serrate, the 

 apex subfalcately short-pointed, both faces subcinereous and 

 rather soft to the touch with a fine strigose pubescence : pedi- 

 cels filiform, as long as the fruit itself. 



Santa Eulalia Plains, Chihuahua, Mexico, collected by Mr. 

 Wilkinson in 1885. The average pattern of the leaf here is 

 precisely that of linden trees, though so very small ; and the 

 species is named in allusion to this. 





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