EUPATORIUMS OF ECUADOR. 365 



Sect. V. Hebeclinium (DC.) Benth. (see p. 327). 



Key to Species. 



a. Petioles not winsed; florets 20- (iO b. 



b. Stem conspicuously quiulransular 40. E. guapulense. 



b. Stem terete or merely ribbed c. 



c. Scales of the involucre about 20, subequal, somewhat 

 ligulate-appendaged; leaves shortly cuneate at the base 



47. E. ovatijolium. 

 c. Scales 30-50, graduated ; leaves not cuneate at the base d. 

 d. Leaves 3-nerved from a jioint 5-10 mm. above the 

 rovmded base; involucral scales lacerate-ciliate toward 

 the tip and bearing a thin membranaceous obtuse ap- 

 pendage; heads 20-25-flowered 48. E. recreense. 



d. Leaves 3-nerved essentially from the cordate base; 

 scales ovate to oval, very obtuse, not appendaged; 



heads 25-40-flowered 49. E. obtusisquamosum. 



a. Petioles winged; florets 100-300 50. E. nemorosum. 



46. E. GUAPULENSE Klatt. Shrubby, climbing, 2-3 m. high, 

 finely and closely rusty-puberulent; branches flexuous, rather sharply 

 quadrangular, the angles rib-like, the faces (at least one pair of them) 

 concave; internodes about 1 dm. long; leaves opposite, long-petioled, 

 broadly ovate, soft, membranaceous, finely serrate almost from the 

 shallowly cordate base to the acuminate tip, 3-nerved from the base, 

 pubescent above, rusty -tomentose beneath; heads 20-30-flowered 

 in paniculately disposed glomerules rather than in a corymb ; corollas 

 light-blue; scales of the involucre 3-4-seriate, obtuse, striate; achenes 

 slightly roughened. — Leopoldina, xx. 90 (18S4); Hieron. in Engl. 

 Bot. Jahrb. xxix. 14 (1900). Heheclinimn tdragonum Benth. PI. 

 Hartw. 198 (1845); Jameson, Syn. PL Aeq. ii. 79 (1865).— Pichincha: 

 rather rare, between the village and bridge of Guapulo near Quito, 

 Hartivcg, no. 1097 (K., phot. Gr.); in moist subandean thickets, 

 Sodiro, no. 6/26b, ace. to Hieron. 1. c. 



47. E. OVATIFOLIUM Hieron. Herbaceous perennial 5 dm. high 

 or more; stem simple and glabrate below, above pubescent, dark- 

 violet, terete; leaves opposite, petiolate, ovate, crenate-dentate except 

 at the acutish or obtusish apex and the shortly cuneate or acuminate 

 base, membranaceous, sparingly villous above, glabrous beneath, 3- 

 nerved, 6 cm. long, 3.5-4 cm. wide; petiole 0.5-3 cm. long, not winged; 

 heads 60-65-flowered, in crowded terminal cymes; pedicels pubescent, 

 sometimes 2 cm. long; involucre broadly campanulate; scales about 

 20, subequal, linear-lanceolate, shortly acuminate, somewhat ligulate- 

 appendaged and often purplish at the tip; corollas 5 mm. long, the 



