EUPHORBIA, SECTION TITHYMALUS. 135 
elongated beyond the primary umbel; stems covered below 
with ovate, acute, imbricated scales which pass into 
crowded, linear, entire, obtuse leaves; middle stem leaves 1 
to 38cm. long, 1.5 to 3 mm. wide, tapering at the base, 
margins often revolute, some of the upper dilated at the 
base; leaves of sterile branches narrower, acute; umbel 
leaves linear lanceolate, shorter, dilated at the base; floral 
leaves broadly ovate, obtuse, light colored when young, 
subpandurate, 8 mm. broad, 6 mm. long, nerves promi- 
nent; involucres 1.5 mm. high; lobes ovate, rounded trun- 
cate, ciliate with short hairs, a few short hairs beneath the 
glands inside; glands semilunate, with short diverging 
horns, less than 1 mm. wide, somewhat declined, bright 
golden brown when dry ; the fifth gland replaced by a small, 
acute lobe; bracts none or very small; stamens several ; 
capsule erect, its pedicel very short, depressed globose, 3.5 
mm. wide, 3 mm. high; cocci rounded, with short warts on 
the back; sulci obtuse; styles .7 to 1 mm. long, united 
more than half their length, bifid above; stigmas almost 
capitate, recurved; seeds ellipsoid, very slightly flattened, 
1.7 to 1.9 mm. long, 1.3 to 1.4 mm. wide, brownish gray ; 
chalazal depression shallow, circular; raphe a brown col- 
ored line; caruncle thin, flat or saddle shaped. — A weed 
naturalized from Europe in the northeastern United States 
and lower Canada from Nova Scotia to Delaware, west to 
northern Michigan and Kansas, one specimen from Colo- 
rado. Rarely producing seed in this country. — Plate 50. 
Specimens examined from Maine (Redfield, Mt. Desert Island, 16528, 
1890; Gayle, Cape Elizabeth, 701, 1895); Massachusetts (Fritchey, Prov- 
incetown, 1889; Redfield, Pittsfield, 7369, 1874; Whitfield, Mt.Washington, 
1889; Waverly, 1895; Boott, Boston, 1866); Michigan (Trelease); Lowa 
(Reppert, Muscatine, 127; Arthur, 710, 1875; Rolfs, Boone Co., 1891; 
Hitchcock, lowa City; Fink, Fayette Co., 123, 1894); New York (Brown, 
Staten Island, 1879; Millspaugh, Binghamton, 1882, Broom Co., 1885, 
Tioga Co.; Curtiss, Oswego, 1866; Kerr, Staten Island, 1895; Trelease, 
Ithaca, 1878); Colorado (Cowen, Ft. Collins, 452, 1895); Kansas (Man- 
hattan, various collectors, 1890-96) ; Missouri (Bush, Jackson Co., 1888) ; 
Pennsylvania (Small, Lancaster, 1889, 1891; Porter, Easton, 1869; Heller, 
Lancaster, 1891; Curwen, Warren, 1895); New Jersey (Shuh, Franklin, 
dl 
