198 PITTONIA. 
triangular lobes, and these only half as long as the tube: 
corolla nearly ? inch long, the cylindric tube little exceed- 
ing the calyx, the limb large, amply funnel-form. 
A very strongly marked species, both as to foliage, the 
merely toothed calyx, and the remarkably long and ample 
limb of the corolla. The only specimens seen are in the 
U. S. Herbarium, and purport to have been collected some- 
where in Arizona, by Dr. Palmer, in 1869. 
