288 ROBINSON. 



6-7-flowered, in dense round-topped rust^'-hirtous corymbs (about 

 8 cm. in diameter); scales about 3-ranked, oblong, obtuse; achenes 

 with ciliate ribs.— PI. Hartw. 199 (1845). 



Cauca: in woods near Huaml:)ia, Prov. Popayan, Hartweg, no. 1100 (K., 

 phot. Gr.). 



A species as yet known only from the original collection. 



29. E. Stuebelii Hieron. Shrubby; branches arcuate, terete, 

 sordid-tomentose; internodes 5-10 cm. long; leaves opposite, petiolate 

 ovate, acuminate, rounded or subcordate at base, rather inconspicu- 

 oush' and remotely' serrulate, above deeply rugose-bullate, nearly 

 glabrous and shining; below tawny-tomentose, 4-6 cm. long, 3-4 cm. 

 wide, 3-ribbed from the base, supplementary nerves arising near the 

 origin of the lateral ones; ribs connected by irregular transverse veins; 

 petiole slender, 1-2 cm. long, tomentose; corymbs compact, tricho- 

 tomous, tomentose; heads 10-flowered, subsessile or shortly pedicelled; 

 involucre cylindrical; the scales 4-5-seriate, 2-3-ribbed, obtuse or 

 acutish, mostly purple toward the tip; corollas lilac; achenes slightly 

 hispidulous on the angles toward the summit. — Hieron. in Engl. 

 Bot. Jahrb. xxi. 329 (1895). 



Boyaca: Paramo de Coper, Stiibel, no. 164 (Berl., phot, and fragm. Gr.). 

 [Ecuador.] 



Said to have terete branches and campanulatc-cylindric involucres, 

 and to belong to § Svhimbncata, yet in many respects suspiciously 

 similar to E. columhianinn of § CylindroccphaJa, a species in which the 

 branches are rather conspicuously grooved. 



30. E. arcuans Robinson. Shrub with terete very flexuous 

 glabrate branches and arcuate angled rusty-tomentose very leafy 

 branchlets; leaves small (1.5-3 cm. long, 1-1.5 cm. broad), opposite, 

 petiolate, ovate, subacuminate, rounded to an acutish base, serrately 

 2-3-toothed on each side above the middle, thick-membranaceous, 

 conspicuously 3-ribbed from the base, subglabrous and with nerves 

 depressed abov-e, olive-green and essentially glul)rous beneath except 

 on the prominulent sparingly pubescent nerves; petiole slendir, 

 about 5 mm. long; heads 7 mm. long, about 10-flowered; involucre 

 subcylindrical; scales about 16, very unequal, in about 3 loosely 

 imbricated ranks, oblong, obtu.se or rounded at the tip, 3-5-ribbe(l, 

 ghibrous except for an obscure eiiiolation; corolla glabrous, 4 mm. long, 

 with the proper tube 2.4 mm. in length and a somewhat ampliated 



