EUPATORIUMS OF PERU. 73 



p. Heads 7-9 mm. high; leaves more 

 coarsely serrate ; stems closely crisped- 

 or glandular-puberulent. 

 Heads numerous in dense strongly 

 convex or rounded corymbs; leaves 

 broadly ovate, mostly rounded at the 

 base (though sometimes with a short 

 acumination at the point of attach- 

 ment), serrate-dentate, the teeth nu- 

 merous, usually 15-19 on each side, 



commonly blunt 76. E. Sternbergianum. 



Heads few, in flattish open corymbs 

 or loosely cjonose; leaves deltoid- 

 ovate or -lanceolate, commonly sub- 

 truncat or subcordate at base, coarsely 

 and unequally crenate-serrate, the 

 teeth mostly 5-10 on each side. 



Heads about 7 mm. high 76a. E. glechonophyllum. 



Heads slightly larger, about 9 mm. 



high 77. E. azangaroense. 



h. Stems glabrous. 



Heads about 5 mm. high; leaf-blade about 4 



times as long as the petiole 73. E. Gilbertii. 



Heads 7-10 mm. high; leaf -blade 8-20 times as 

 long as the pstiole 

 Leaves rounded at base; petioles glabrous; 



involucralscalessubscariousat tip.72.a. E. Dombeyanum. 

 Leaves subcordate at base; petioles spreading- 

 puberulent ; involucral scales attenuate to a 

 sharp non-scarious tip 78. E. isillumense. 



57. E. FASTiGiATUM HBK. Nov. Gen. et Spec. iv. 125, t. 347 (1820) ; 

 Robinson, Proc. Am. Acad. liv. 307 (1918). — Piura: in the cooler 

 regions of the mountains between Guancabamba [Huancabamba] 

 and the Paramo de Guamani, Humboldt & Bonpland, no. 3524 (Par., 

 phot. Gr.). 



This species is still somewhat problematic, being known only from 

 the type material with which to date it has been impossible to iden- 

 tify precisely any of the modern collections. The species is clearly 

 very close in habit, inflorescence, leaf-texture and leaf-venation to 

 the variable E. exserto-venosum Klatt, but the leaves are more obovate 

 or oblanceolate than in any as yet described variety of the latter 

 plant. Moreover, the leaves are rather conspicuously and bluntly 

 cuspidate at the tip. Finally Kunth, 1. c, in describing the species 

 states that the heads are about 12-flowered, that is to say have half 

 again to twice as many florets as are found in E. exserto-venosum Klatt. 

 Material approximating E. fa^stigiatum has been collected in Colom- 

 bia (see Robinson, 1. c.) but its identity must be subject to doubt 

 until the type can be re-examined. 



58. E. EXSERTO-VENOSUM Klatt, Abh. Xaturh. Ges. Halle, xv. 



