358 ROBINSON. 



rectly cited as Riobamba by Benth. 1. c), village of Guapulo, Haciendo 

 de Pinantura, Hariweg, no. 1095 (K., N. Y., phot. G.); Andes of 

 Quito, alt. 3050 m., Jameson (Gr.). 



29. E. UMBROSUM Benth. Sticky shrub with flexuous slightly 

 hexagonal branches; leaves opposite, short-petioled, elliptical, 2.5- 

 4 cm. long, 15-20 mm. wide, acutish, mucronate, rather abruptly 

 cuneate at base, obsoletely serrulate above the middle, the teeth very 

 few (4-7 on each side), 3-nerved from the base, rather firm, glabrous 

 on both surfaces; petiole 2-5 mm. long; inflorescence considerably 

 exceeding the leaves, pedunculate, fastigiately branched, dense, 

 man^^-headed, strongly convex, about 8 cm. in diameter; heads 6-7- 

 flowered; involucre narrowly campanulate, its scales 8-10, lance- 

 oblong, acutish, viscid, about 2-seriate, subequal. — PI. Hartw. 198 

 (1845); Jameson, Syn. PI. Acq. ii. 84 (1865). — Pichincha: in shade, 

 Rumibamba, near Quito, Harhccg (unnumbered unicate, K., phot. 

 Gr.). 



30. E. COTACACHENSE Hieron. Shrub, 2-3 m. high, smooth except 

 for a sparing and somewhat obscure puberulence on the young often 

 vernicose and sticky parts; branches erect or curved-ascending, 

 irregularly quadrangular, leafy; internodes 1-4 cm. long; foliage 

 yellowish-green when fresh, often fuscous after drying; leaves lanceo- 

 late-oblong to elliptical, acute or obtusish, serrate or crenate except 

 at the entire more or less cuneate base, 3-4 cm. long, 2-2.6 cm. wide, 

 firm in texture, 3-nerved from above the base, a pair of smaller intra- 

 marginal nerves between the main nerves and the actual base, both 

 surfaces finely reticulated, the veinlets prominulent, teeth 9-19 on 

 each side; petiole about 5 mm. long, canaliculate above; corymbs 

 dense, many-headed, 4-6 cm. in diameter, strongly convex, fastigiate, 

 about equalling or sometimes exceeding the leaAes; heads 3-5-flow- 

 ered, about 7 mm. high; involucre narrowly campanulate, the scales 

 5-7, subequal, lance-oblong, obtusish to rounded at the apex, 3 (-5) 

 mm. long, viscid, usually 2-ribbed; corolla white, 5 mm. long; the 

 proper tube 1.5 mm. long, beset with sessile glands, the throat glabrous, 

 3.5 mm. long; achenes (immature) 1.5 mm. long, granulated. — Hieron. 

 in Engl. Bot. Jahrb. xxi. 331 (1895). E. pninifoUuvi Klatt in Engl. 

 Bot. Jahrb. viii. 35 (1887), not HBK. — Imbabura: Cerro Cotacachi, 

 Siilbcl, no. 59 (Berl., phot, and fragm. Gr.). Carchi: Paramo de 

 Tuza [Tusa], alt. 3400 m., Lchmann, no. 587 (Gr.); in the Andes of 

 Ecuador without preci.se locality, Sprxicc, no. 5805 (Gr.). Locally 

 called chilca blanca (Andre). 



31. E. EXSERTO-VENOSUM Klatt. Glabrous shrub 9-12 dm. high, 



