1898] EUPHORBIAS OF DR. PALMER'S DURANGO COLLECTION 
EUPHORBIA HETEROPHYLLA GRAMINIFOLIA (Michx.) Engelm. 
Mex. Bot. Igo. 
Dr. Palmer’s 659 Durango is the 
typical form of this variety, the 
lower leaves being scabrous above, 
and strigose with long scattered 
hairs beneath. The four missing 
involucral glands are represented 
by a like number of linear lobes. 
The seeds, instead of being lentic- 
ular in section as in the species, are 
even more sharply triangular than 
in var. ertocarpa Millsp. 
EvuPpHORBIA JALISCENSIS Rob. & 
Greenm. Proc. Am. Acad. 29: 392. 
Dr. Palmer, in his 660 (in part) 
Durango, rediscovers this interest- 
ing species, first collected in the 
barranca of Tequila by Pringle (4608) in 1893. His specimens 
by a linea’ blunt lobe. 
agree with the type except that 
they are less robust in habit; 
notwithstanding this the leaves 
show still more clearly their 
sessile character. 
In this species the leaves 
tend rather to be acute than 
obtuse; although apparently 
‘winged petiolate,” the dilation 
of the wings at the juncture 
with the stem, and their con- 
tinuation above with the leaf, 
proves them sessile. The glands 
are stipulate, with appendages 
8—12-crenate-dentate. The fifth 
involucral gland is represented 
The involucral lobes are strongly 
