DENDROMECON. 305. 
served in U.S. Herb. Thecollector supposed it to be D. rigida ;- 
or, more probably, was told by some one that this was the name? 
His label bears record to its attaining the height of twenty feet, 
which is much larger than the largest seen by me in my very 
imperfect survey of the vegetation of Santa Cruz. 
I observe, furthermore that in this earliest known specimen 
the leaves differ in two points from those of my type as here 
anew described; they lack all trace of the obovate in outline,. 
and are elliptic-oblong, with also no obscure hint of the reticu- 
lation. Specimens of my own also, forming a part of my dupli- 
cates of D. flexilis have a still more rounded leaf, with texture 
firmer, and sufficiently evident reticulation ; so that I begin to 
be apprehensive that the D. flexilis as I had it, and still have 
it, may prove an aggregate of two species. 
16. D. RHAMNOIDES. Size and habit of D. flexilis ; leaves 
large, 2 to 4 inches long, broadly oblong or oval, obtuse, with 
very prominent narrow cusp or soft mucro, the texture not even 
coriaceous, marked with many pairs spreading veins all low and 
delicate, and devoid of all reticulation, the margin entire: pe- 
duneles even in fruit not half the length of the leaves: corolla 
about 14 inches wide : pods 3 inches long: seeds unusually 
small, nearly spherical, very slightly inclining to pyriform, the 
reticulation coarser than usual, very distinct. 
Island of San Clemente, June, 1903, Mrs. Trask ; distributed 
to U. S. Herb. under n. 252 and the name D. flexilis, which 
this new species recalls in habit only. Its leaves are not only 
green (not even glaucescent), but as thin as those of Rhamnus 
Purshiana nearly, not as thick as those of R. Calfornica. In 
this particular the species is most remarkable. 
17. C. ARBOREA. Arboriform, 10 to 20 feet high, with trunk 
5 inches to a foot in diameter: branches densely clothed with 
coriaceous glaucous rigid and ascending rather than spreading 
foliage: leaves mostly 2 inches long, rather broadly elliptical, 
acutish, stoutly mucronate, entire, or with here and there some 
