. 288 ROBINSON. 
6-7-flowered, in dense round-topped rusty-hirtous corymbs (about 
8 cm. in diameter); scales about 3-ranked, oblong, obtuse; achenes — 
with ciliate ribs— Pl. Hartw. 199 (1845). ‘ 
Cauca: in woods near Huambia, 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 em. long; leaves opposite, petiolate 
ovate, acuminate, rounded or subcordate at base, rather inconspicu- — 
ously and remotely serrulate, above deeply rugose-bullate, nearly 
glabrous and shining; below tawny-tomentose, 4-6 cm. long, 3-4 em. 
wide, 3-ribbed from the base, supplementary nerves arising near the 
origin of the lateral ones; ribs connected by irregular transverse VellS; 
petiole slender, 1-2 em. 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 oF 
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). 
Boyack: Péramo de Coper, Stiibel, no. 164 (Berl., phot. and fragm. Gr.). 
_ [Eeuador.] 
Said to have terete branches and campanulate-cylindric involuc res, 
and to belong to § Subimbricata, yet in many respects suspiciously : 
similar to E. columbianum of § Cylindrocephala, 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 em. 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 above, olive-green and essentially glabrous beneath except 
on the prominulent sparingly pubescent nerves; petiole slender, 
subcylindrical; scales about 16, very unequal, in about 3 loosely 
imbricated ranks, oblong, obtuse or rounded at the tip, 3-5-ribbed, 
glabrous except for an obscure ciliolation; corolla glabrous, 4mm. 7 
with the proper tube 2.4 mm. in length and a somewhat ampliats 
