282 ROBINSON. 



scales very unequal, imbricated in 3-several graduated series, persist- 

 ing until after the fall of the achenes. — Hoffm. in Engl. & Prantl, Nat. 

 Pflanzenf. iv. Abt. 5, 140 (1890). Evpaiorivm ser. Subimbricata DC. 

 Prod. V. 152 (1836). Evpaiorivm sect. Heterolepis Bak. in Mart. 

 Fl. Bras. vi. pt. 2, 301 (1876). Batschia Moench, Meth. 567 (1794). 

 TVikstromia Spreng. Syst. iii. 434 (1826). Critonia DC. Prod. v. 

 140 (1836). DisynapMa DC. Prod. vii. 267 (1838). Heterolaena 

 Sch. Bip. ex Benth. & Hook. f. Gen. ii. 245 (1873).— Species very 

 numerous, chiefly perennial herbs or shrubs. 



Key to Species. 



a. Leaves entire, rusty-woolly beneath 21. E. gynoxoides. 



a. Leaves toothed, undulate, or in a few cases (when not rusty- 

 woolly) entire b. 

 b. Heads few (mostly 5-13)-flowered c. 



c. Leaves strongly discolorous, white-lanulate beneath d. 

 d. Leaf-blade ovate-oblong, obtuse, rounded at base 



22. E. origanoides. 



d. Leaf-blade deltoid-ovate, acutish, cordate 23. E. niveum. 



c. Leaves (when mature) never whitened beneath e. 



e. Leaves spatulate-obovate, very fleshy, 1-nerved; lateral 



veins (pinnate) very obscure or invisible 24. E. sciaphilum. 



e. Leaves never obovate; lateral veins or nerves clearly 

 evident / 



/. Heads separate or in small glomerules loosely dis- 

 posed in open forking cymose panicles 25. E. iresinoides. 



f. Heads crowded in flatfish or moderately convex 

 corymbs or in corymbosely disposed subglobose 

 glomerules g. 



g. Leaves pinnately veined, subsessile or very shortly 

 petioled h. 

 h. Leaves oblong or lanceolate, coriaceous ^. 



i. Leaves tomentose beneath 26. E. salicinum. 



i. Leaves subglabrous beneath j. 

 j. Branches of the inflorescence and pedicels 



subglabrous, often vernicosc 27. E. baccharoides. 



j. Branches of the inflorescence and pedicels 



rusty-pubescent 28. E. arbutifolium. 



h. Leaves ovate, membranaceous 



47. E. (urbacense, v. ovatifoHum. 

 g. Leaves palmately 3(-5)-nerved from or somewhat 

 above the base A". 



k. Leaves slender-petioled; lamina sul)()rl)icular- 

 to lance-ovate, rounded at base /. 

 I. Leaves firm-chartaceous, subcntire or ob- 

 scurelv serrate, bullate above, tomentose 



beneath 29. E. Stuebelii. 



I. Leaves subcoriaceous, small (L5-2.7 cm. 

 long), glabrous above, sparingly hirtellous on 



