296 PITTONIA. 
fornia or Massachusetts, who, had he been shown the leaves 
alone, of D. flexilis, would ever had guessed that this foliage 
was that of any Dendromecon. There is not the least generic 
likeness between this leaf and that of D. rigida or even of 
D. Harfordit; and in the seventeen species of Dendromecon 
which I now find it necessary to outline, there is much diversity 
of habit and as many clear and constant characters of foliage 
as will be found to exist in an equal number of generally 
accepted species of Prunus, Rhamnus, or Crategus, and greater 
differences than those subsisting between any seventeen species 
of Alnus, Amelanchier, or Lonicera. 
The distribution of the species is most interesting. It seems 
to indicate a maritime origin for the genus; for the seven hun- 
dred miles of the Sierra Nevada foothills, farthest inland, 
yield but four of the seventeen species. The coast ranges 
and their southern spurs or extensions, all within what we 
know as the sea-fog belt, and near the sea, furnish us eight; 
while that nearly infinitesimal fraction of Dendromecon terri- 
tory, the little seagirt islands off the coast, among themselves 
supply the other five. 
Leaves very rigid, erect or suberect, strongly marked by an elevated venation 
and reticulation 
Leaves of a light somewhat yellowish green, merely glaucescert. 
Peduncles slender, equalling or surpassing the foliage ; 
Shrubs loosely and irregularly branched 
eaves lanceolate or ovate-lanceolate, cuspidate- 
acute, erose_denticulate 1D. rigida. 
Leaves linear lanceolate, caudately acuminate, 
with elongated reticulation 2 D. caudata. 
Shrub compactly and tastigiately branched ; 
leaves triple-nerved, less notably reticulate.. 3 D. fastigiata. 
Patania Slout, Shorter than the large obovate- 
4D Harfordii. 
Leaves pallid, very distinctly glaucous ; the veins flexuous, freaking into the 
reticulation, 
Peduncles slender, equalli: g or taüt the foliage. 
eaves ovate-lanceolate, very acute, erose-den- 
ticulate. 
D. agnina. 
