ROSACEAE. 



125 



Glabrous: twigs purplish 



Osmabonia. Osoberry. 

 (Family Rosaceae). 



Shrubs or subarborescent: de- 

 ciduous. Twigs moderate, terete: 

 pith rather large, rounded, pale, 

 chambered. Buds sessile or more 

 or less supra-axillary or stalked, 

 ovoid, obtuse, with about 3 ex- 

 posed mucronulate scales. Leaf- 

 scars alternate, somewhat crowded 

 at tip, shallow U-shaped or nar- 

 rowly crescent-shaped, little 

 raised: bundle-traces 3: stipule- 

 scars lacking. (Nuttallia). 



The winter-characters of Osmar- 

 onia (or Nuttallia) cerasiformis 

 are given by Schneider, f. 74. 



Osmaronia is a distinctively Cal- 

 ifornian genus locally differenti- 

 ated into distinguishable forms 

 but in the minds of conservative 

 botanists doubtfully divisible into 

 as many species, 

 buds green. N. cerasiformis. 





