46 ROBINSON. 



Am. Acad. liv. 278, 346 (1918). Peru: on the Andes, but without 

 record of exact locaHty, Haenke ace. to DC. 1. c. [Ecuador, Colombia.] 

 No Peruvian material or more precise record of this species has been 

 seen by the writer, though it appears to be tolerably frequent in Ecuador. 



6. E. TENUICAPITULATUM Hieron. Opposite-branched, erect, 5 dm. 

 high, herbaceous; stems and branches terete, dull purple, covered at 

 first with a scanty delicate appressed and jointed pubescence; leaves 

 opposite, ovate-lanceolate, caudate-acuminate, finely serrate, firmly 

 membranaceous, appressed-puberulent on the nerves and chief veins, 

 green and glabrous above, lighter green and punctate beneath, about 

 1 dm. long and 3 cm. wide, base entire, rounded but at the insertion 

 subcuneate; petiole 5-12 mm. long; corymbs terminal, compound, 

 crowded, flatfish; heads about 10-flowered, subsessile by 2's and 3's, 

 about 8 mm. long and 2 mm. thick (ace. to Hieron.); involucral scales 

 about 20, stramineous, with dark purplish mucronate pubescent at 

 length slightly squarrose tips. — Hieron. in Engl. Bot. Jahrb. xxxvi. 

 465 (1905).^ — Cajamarca: near Tambillo, von Jelski, no. 598 (Berl., 

 fragm. Gr.). 



7. E. SQUALiDLTM DC Prod. V. 142 (1836); Bak. in Mart. Fl. Bras, 

 vi. pt. 2, 281, t. 77 (1876); Robinson, Proc. Am. Acad. liv. 334 (1918). 



[Var. TYPicuM Robinson, 1. c. Branches villous-hirsute, the hairs 

 mostly straight, widely spreading, attenuate, with dark articulations; 

 leaves roundish-ovate, of firm texture, very shortly petioled.- — Eastern 

 Brazil, e. g. at Marianna, Minas Geraes, Vauthier, no. 279 (DC, Gr.), 

 etc.]. 



Var. RusBYANUM Robinson (p. 34). Stem and branches covered 

 with short whitish mostly incurved and unjointed hairs ; leaves ovate- 

 lanceolate to rhombic-ovate, above sparingly appressed-puberulent, 

 beneath sordid-tomentellous and glandular-punctate, the indumentum 

 sufficiently dense to obscure the punctation. — Peru without precise 

 locality: Mathews (N. Y.). [Boliv.] 



8. E. scABRUM L. f. Suppl. 354 (1781); J. E. Sm. Ic. iii. t. 67 

 (1791); Bak. in Mart. Fl. Bras. \A. pt. 2, 299 (1876); Robinson, Proc. 

 Am. Acad. liv. 277 (1918). — Peru without locality: Baker, 1. c, 

 extends the distribution of this Colombian species to Peru but does not 

 mention the collector [Mathews?]. The species has been so variously 

 interpreted in the past that this single and undetailed record of its 

 occurrence in Peru must until verification be subject to considerable 

 doubt. [Colombia.] 



9. E. ODORATUM L. Syst. ed. 10, 1205 (1759); Robinson, Proc. Am. 

 Acad. liv. 280, 346 (1918). E. conyzoides Mill. Diet. ed. 8, no. 14 (1768) ; 



