ROBINSON AND GREExNMAN. — 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 

 .'? 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, glabcous 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- 

 nate, 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 

 narrow 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- 

 rotund or oblong 2-3-crenulate appendages (about a line long) ; involucral 

 lobes fimbriate, green: styles deeply 2-parted; capsule green, glabrous, 

 1 J 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 subcaerulea. 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 8 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 



