118 LBAFLBTS. 



evenly 3-lobed, about 2H inches long by more than 2 inches 

 wide across the basal lobes, all leaves of firm -membranaceous 

 texture and vivid-green on both faces, the upper face hispid- 

 ulous along the veins and sharply pustulate-muriculate between 

 them, lower face hirsute along the veins and strigulose-pubes- 

 cent between them. 



Of the Organ Mountains in southern New Mexico, where 

 it was collected in copious and fine specimens by E. O. Wooton 

 and P. C. Standley, 9 June, 1906, the collection well repre- 

 sented in U. S. Herb. 



MoRUS CANiNA. Leafy twigs of the season reddish, glabrous, 

 the branches yellowish : foliage as far as known without lobes ; 

 leaves smaller than those of Af. microphylla, broadly subcor- 

 date-ovate, Y^ to xYt, inches long, J^ to 1 inch wide, closely 

 and sharply serrate-dentate, at apex subfalcately short-acum- 

 inate, subcoriaceous, dull light green and coarsely muricate- 

 scabrous above, beneath of a yellow-green hue and polished, 

 hispid along the veins, and v/ith a sparse showing of pustulate- 

 strigose hairs between them. 



Dog Spring, southern New Mexico, 25 May, 1892, Dr. E. A. 

 Mearns. 



MoRUS ALBiDA. Twigs of the season lightly velvety- 

 tomentose, the maturer branches glabrous and of a decidedly 

 yellowish gray : petioles Y^ inch long, velvety : leaves of 

 vigorous sterile branches 3-lobed and rather regularly so, about 

 2% inches long, 13^ wide, those of fruiting twigs cordate-ovate 

 and much smaller, about IJ^ inches by 1 inch, all evenly and 

 sharply serrate as well as with a short acumination, upper face 

 extremely rough with a close low tuberculation of which the 

 very sharp points can be felt, but hardly seen with an ordinary 

 lens, lower face rather softly strigose-pubescent, the veins and 

 veinlets showing but few rather short and not very rigid 

 spreading hairs ; texture of leaf firm membranaceous, color of 

 a decidedly light green. 



Berend Creek, Sierra Co., New Mexico, 22 May, 1904, O. B. 



