340 ROBINSON . 



21. E. MACROPHYLLOiDES Robinson (see p. 249). Tall soft-wooded 

 shrub 3-4 m. high; stems round, tawny-woolly; leaves opposite, 

 triangular-ovate, acute or acuminate, subtruncate at base but shal- 

 lowly cordate at the point of insertion, crenulate practically from the 

 base, about 1 dm. long and 8 cm. wide, membranaceous, soft in tex- 

 ture, 3-nerved (the lateral nerves bearing on the outer side several 

 branches almost from the base), dusty-puberulent above, grayish 

 and softly pubescent beneath; petioles as much as 6 cm. long; in- 

 florescence a trifid compound corymb, the parts dense, rounded, 

 many-headed; heads short-pedicelled, about 11-flowered; involucre 

 subcylindrical, rather loosely imbricated; scales about 4-seriate, thin, 

 straw-colored, the inner oblong-linear, rounded at the apex, the outer 

 gradually shorter, obtuse, ciliolate; corolla probably whitish, 4 mm. 

 long; the slender proper tube about as long as the perceptibly and 

 gradually enlarged throat; style-branches filiform; achenes 2 mm. 

 long, hispid; pappus-bristles about 36, unequal. — Venezuela (state 

 not indicated): at " Sanchorquig," Eggcrs, no. 13,413 (U. S.). 



22. E. TENUiFOLiUM HBK. Herbaceous perennial; stem slightly 

 angled, branching toward the top and leafy almost to the summit; 

 internodes as much as 7 cm. long; leaves opposite, slender-petioled, 

 rhombic-ovate, acute, sharply dentate except at the cuneately con- 

 tracted base, 3-nerved, membranaceous, thin, 6-7 cm. long, 3-4.5 

 cm. wide, glabrous above, pubescent on the nerves and veins beneath; 

 heads about 7-flowered, sessile in dense subglobose glomerules; in- 

 volucre cylindrical; scales about 14, very unequal, the inner linear- 

 oblong, obtuse or rounded at the tip, subglabrous, the outer gradually 

 shorter, ovate, ciliate, subacute. — Nov. Gen. et Spec. iv. 107 (1820). — 

 Bermudez: between Bordones and Cumana, Humboldt cC* Bonpland 

 (Par., phot, and trac. Gr.). 



23. E. PYCNOCEPHALUM Less. (see p. 296). Merida: near Tovar, 

 Fendler, no. 1953 (Gr.). A form somewhat more pubescent than the 

 nearh^ smooth Mexican type, but without other differences of moment. 



24. E. microstemon Cass, (see p. 295). E. microsteiuon, a. alhi- 

 fiorum Ktze. Rev. Gen. i. 338 (1891). Merida: near Tovar, Fendler, 

 nos. 648 (Gr.), 1943 (Gr.). Venezuela, without locality, ace. to 

 Kuntze, 1. c. 



Var. LiLACiNUM Ktze. Florets lilac— Rev. Gen. i. 33S (1891).— 

 Merida; near Tovar, Fendler, no. 649i:3 (Gr.). 



