ROBINSON AND GREENMAN. — MEXICAN PLANTS. 37 
10 to 16 lines long, a third to half inch broad: petioles 4 to 6 lines long, 
tomentulose : cymes compound, terminal, flat-topped, leafy: floral leaves 
oblanceolate, cuneate, mucronulate, 1-nerved, white or rarely red, about 
5 lines in length, a line in breadth: involucres campanulate, puberulent, 
nearly sessile ; lobes 5, fimbriated; glands 5, oblong; appendages oblong 
or subrotund, undulate, white, three fourths line long: capsules 3-lobed, 
nearly 3 lines long, glabrous seeds ashy, oblong, somewhat 4-angled, © 
faces rugulose and marked with fine irregular brown lines. — Collected 
by Lucius C. Smith, at Rancho de Calderon, altitude 5,500 feet, 13 
August, 1894, no. 181; also at Jaycatlan, altitude 4,300 feet, 10 
September and 4 November, 1894, no. 182; also by C. G. Pringle, in 
rocky gulches, Monte Alban, Oaxaca, altitude 5,800 feet, 14 September 
and 27 November, 1894, no. 4903, and by E. W. Nelson, six miles above 
Dominguillo, altitude 4,500 to 5,500 feet, 30 October, 1894, no. 1880. 
Most nearly related to E. leucocephala, Lotsy, from which it differs in 
pubescence and form of appendages. 
Euphorbia Oaxacana. Stems subterete, 2 to 5 feet high, green, 
rather densely pubescent near the summit, soon glabrate: leaves alter- 
hate, ovate-elliptic, entire, thin, obtuse at each end, appressed-villous on 
both sides and ciliated, 10 to 16 lines long, half as broad; slender soft- 
pubescent petioles becoming half inch in length: inflorescence a long 
Harrow compound somewhat secund naked panicle: its leafless branches 
alternate, 1 to 3 inches in length, again branched and rather densely 
flowered, tomentose; buds roseate, tomentose: involucres in subcapitate 
peduncled cymes, white-tomentose as well as the short (1 to 1} lines) 
linear-spatulate branchlets ; glands 5, equal, oblong, with white sub- 
Totund or oblong 2-3-crenulate appendages (about a line long) ; involucral 
lobes fimbriate, green: styles deeply 2-parted; capsule green, glabrous, 
1} lines in diameter: seeds oval, ashy, faveolate. — Collected by C. G. 
Pringle, on ledges, Monte Alban, Oaxaca, altitude 5,800 feet, 23 No- 
vember, 1894, no. 6070. 
Euphorbia Ssubczerulea. Erect much branched annual, glabrous 
throughout, 2 feet in height: stem and slender branches terete, striate, 
livid: leaves elliptic-ovate, entire, thin, green above, a little paler and 
glaucescent beneath, rounded or very obtuse at the base, rounded or 
retuse at the apex, 3 to § lines long, nearly two thirds as broad: petioles 
filiform, nearly equalling the leaves: inflorescences open cymose-panicu- 
late: floral leaves very small, elliptic-ovate to subrotund, subsessile, 
White or bluish: involucres (including appendages) 1} lines in diameter ; 
glands 5, oblong, sessile, with suborbicular entire appendages, these at 
