COLOMBIAN EUPATORIUMS. 303 
deeply sulcate, glabrous, leafy; leaves opposite, petiolate, serrulate 
except at the cuneate base, acuminate, pinnately many-veined, 10-18 
em. long, 2.4—5 cm. wide, firm in texture; petiole 1-2 cm. long; heads 
20-25-flowered, in ample sessile compound flattish-topped or decidedly 
convex corymbs (9-18 cm. in breadth); involucre campanulate, about 
6 mm. high and thick; scales 3-4-seriate, stramineous, lanceolate, 
acute or acutish, often viscid; florets ochroleucous or white tinged 
with violet (Mayor); achenes dark, tapering toward the base, nearly 
or quite glabrous, 1.8 mm. long.— Hieron. in Engl. Bot. Jahrb. xl. 
373 (1908); Heering, Mém. Soc. neuchat. Sci. Nat. v. 420 (1913). 
Antioquia: talus-slopes of the Cafetal La Camelia, near Angelopolis, 
alt, about 1600 m., Mayor, no. 641, ace. to Heering, 1. c. 
Et Vatuue: El Saladito, above Calf, road to Buenaventura, Cordillera Occi- 
dental, alt. 1400 m., Pittier, no. 772 (U. S.). 
Cavca: in thickets on plateau near Popayan, alt. 1600-1900 m., Lehmann, 
No. 5539, ace. to Hieron. 1. ec. 
Wirxovur Locauity: Triana, no. 1227 (K.). 
Sect. IIT. Eximesricata (DC.) Hoffm. Involucre campanulate, 
turbinate, or subcylindric, seldom more than twice as long as thick; 
Scales (persistent) 1-2(-3)-seriate, most of them subequal, but often 
1-3 of the outermost considerably and progressively reduced. Re- 
Ceptacle flat or nearly so, glabrous.— Hoffm. in Engl. & Prantl, Nat. 
- lv. Abt. 5, 140 (1890). Eupatorium ser. Eximbricata DC. 
Prod. v. 164 (1836). Kyrstenia Neck. Elem. i. 81 (1790). Batschia 
Moench, Meth. 567 (1794). Gyptis Cass. Bull. Soc. Philom. 139 
, Ageratiopsis Sch. Bip. ex Benth. & Hook. f. Gen. ii. 246 - 
The separation of this section from the preceding, while practical 
for purposes of classification, is obviously artificial. The distinction, 
whether stated in terms of the greater equality of the involucral scales 
and the fact that they appear to be in fewer series, or based upon their 
relatively slighter imbrication, is incapable of precise definition and 
— panied by concomitant differences either of habit or technical 
ers. 
Key To Speciss. 
a. me : ae 
Leaves Corlaceous,: reticulated, oblong to elliptical (some- 
€s ovate in E. rorulentum : 
and E£. iaefoli ; shrubs 
> salty : or a vacciniaefolium) 
Need -Howered or 
rarely (in nos. 58 and 59) 20-25- 
