480 CXXII. EUPHORBIACEZ (BROWN). | Euphorbia. 
Leaves linear, with revolute entire 
margins. 
Involucre-glands with 2 rather 
long horns = . 76. H, dejecta. 
Tnvolucre-glands with or with- 
out a minute point at each 
end, often denticulate . 77. E. cyparissioides. 
Leaves ascending or spreading. 
Leaves sharply serrate, sessile; 
annual. : = : . 69. £. arguta. 
Leaves entire or in 73, LH. agowensis, 
finely toothed, and in 67, Z. 
petitiana, inconspicuously den- 
ticulate ; annuals or perennials. 
tInvolucre-glands 2-horned, or at 
least with a minute point at 
each end of the outer margin. 
Leaves j-1} in. long, sessile, 
more or less crowded; 
stems 2 or more from the 
same root. 
Leaves oblanceolate, very 
minutely toothed at the 
apex; umbels 2-3 in. in 
diam. . 3 A . 67. HL. petitiana. 
Leaves lanceolate, entire; 
umbel head-like about 2 
in. in diam. . 3 . 1. E. Wellbyi. 
Leaves mostly 14-4 in. long, 
sometimes smaller, petio- 
late or tapering to a 
petiole-like base. 
Horns of the involucre- 
glands about 3 lin. long. 66. E. loagecornuta. 
Horns of the involucre- 
glands 4-4} lin. long, 
occasionally reduced to 
mere points, 
Umbel- or cyme-branches 
densely puberulous 
or subtomentose 
under the nodes. 
Leaves narrowed into a 
slender petiole 4-5 ; 
lin, long - . 64 E. longepetiolata. 
Leaves narrowed to the 
base but scarcely 
forming a distinct en 
petiole . ‘ . 65. E. sehimpertana,'var- 
Umbel- or cyme-branches 
glabrous. 
Bracts ovate, elliptic, 
lanceolate or sub- 
orbicular, 14-5 lin. 
broad, rounded at 
. 
