ROBINSON. — MEXICAN PLANTS. 339 



5 mm. high, about 16-flowered, borne in small round-topped corymbs at 

 the ends of the opposite branches, also forming a larger dense terminal 

 corymb ; pedicels 4 mm. long ; involucral bracts subequal, oblong, 

 obtuse, pale green, striate, 3 mm. long : corollas nearly white, 2.5 mm. 

 long, the well-marked throat nearly as long as the proper tube: pappus 

 (not copious) about equalling the corolla: achenes black, 1.2 mm. long, 

 minutely roughened on the angles. — Collected by C. G. Pringle on 

 shaded cliffs of the Sierra de Tepoxtlan, 24 km. northeast of Cuernavaca, 

 Mexico, altitude 2,300 m., 7 February, 1891), no. 8029. 



E. platyphyllum. Shrubs with stems pithy, 6-angled, stoutish but 

 flexuous as if scandent, at first sordid tomentulose-pulverulent, at length 

 glabrate; internodes rather long : leaves opposite, 1.2 to 1.8 dm. long, the 

 largest 2.2 dm. broad, shallowly 3-lobed, acuminate, rounded below to a 

 very shortly cuneate base, thin, green and glabrous or nearly so on each 

 surface, 3-nerved from the base, coarsely reticulate-veined, the veins pale 

 and slightly promiuulous beneath; lobes acuminate, cuspidate-denticulate ; 

 petioles slender, 3 cm. long: heads large, numerous, fi0-7.J-Howered, 

 aggregated at the ends of the slender ascending branches of a broad 

 somewhat pyramidal panicle; pedicels filiform, about 1 cm. long; in- 

 volucre campamdate, 1 cm. high, 1.3 cm. in diameter; scale? pluriseri- 

 ate, regularly but loosely imbricated, very unequal in length, stramineous, 

 striate, scarious and erose near the rounded tips: corollas 6 nun. long, 

 probably white, very slender, without distinctly enlarged throat, equalled 

 by the copious bright white pappus : achenes glabrous, 2 mm. long. — 

 Collected by E. W. Nelson, near Chicharras, Chiapas, Mexico, altitude 

 900 to 1,800 m., 6 February, 189G, no. 3765; also by E. A. Goldman 

 at Metlaltoyuca, Puebla, no. 78. Types iu herb. Gray and herb. TJ. S. 

 Nat Museum. 



E. Saltivarii, Sch. Bip. in Rob. & Sea. Proc. Am. Acad, xxviii. 

 108 (1893). Add syn. E. abronium, Klatt, Ann. k. k. Naturh. Hofmus. 

 Wien, ix. 355 < 1894). 



E. scabrellum. Stems angled and furrowed above, finely grayish 

 pubescent or tomentulose : leaves subalternate (at least the upper ones), 

 petiolate, ovate, scarcely acute, subcordate or rounded at the base, 

 crenate-denticulate, 5 to 16 cm. long, 3 to 12 cm. broad, thin but of 

 harsh texture, green upon both sides not paler beneath, glabrous to the 

 naked eye, but somewhat scabrous and under a lens puberulent, palmately 

 3-nerved somewhat above the pinnately several-nerved base : inflores- 

 cence an alternate-branched many-headed racemose panicle, its lower 

 branches (subtended by leafy bracts) 1.2 dm. long, naked below, 



