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1898] ZUPHORBIAS OF DR. PALMER'S DURANGO COLLECTION 19 
Dr. Palmer’s 296 Durango, fine robust examples, have red- 
maculate leaves, frequent radication towards the ends of the 
branchlets, nearly entire (simply erose) stipules and exappen- 
diculate glands. Specimens collected by Dr. Mohr, and New- 
man in Alabama agree well with Dr. Palmer’s, while those of 
Pammel from Iowa, Eggert from Illinois, Dr. Krause from 
Missouri, and myself from West Virginia have very evident 
white or roseate glandular appendages, and fimbriate-margined 
stipules. 
EUPHORBIA PROSTRATA Ait. Hort. Kew. 2: 139. 
Dr. Palmer’s Durango specimens of this species agree 
with the description of Boissier in DC. Prod. 15: 47, except in 
having appendages as long as 
the width of the gland, and 3— 
several round-dentate on the 
margin. In this species the 
fifth involucral gland is re- 
placed by a small triangular- 
entire sixth lobe, the stems are 
striate, and the leaves denticu- 
late all along the lower, and for 
one-half the upper margin. The 
seeds are pink, strongly tetrag- 
onal, narrowly elongate-pyri- 
form, 1.5™™ long, 0.6—7™ broad, 
and have all the facets concave 
and traversed transversely by 
numerous anastomosing ruge. 
In Dr. Palmer’s 897 the 
_ leaves are larger and all parts except the involucres more robust 
than in his 225, in which nearly all the leaves are of the char- 
acter of the minute floral leaves in the first. 
EUPHORBIA STICTOSPORA Engelm. Mex. Bound. Bot. 187. 
The triangular involucral lobes of this species are not “ pro- 
funde fimbriatis”’ but densely hairy, the hairs being of the same 
size and structure as those of other parts of the plant. The fifth 
