EUPATORIUM 



EUPATORIUM 



1165 



E. Scales of involucre blunt, 



gray-velvety 22. altissimum 



EK. Scales sharp, smoothish, with 



thin white edge 23. album 



DD. Lf. -blade ovate-lanceolate, sessile 



by a rounded base 24. sessilif olium 



DDD. Lf. -blade broadly ovate, usually 



well stalked. 

 E. The Ivs. taper-pointed, sharply 



toothed 25. urticeefolium 



EE. The Ivs. mostly blunt and 



bluntly toothed 26. aromaticum 



1. atr6rubens, Nichols. (Hebeclinium atrorubens, 

 Lcm.). Lvs. large, ovate, short-stalked, heart-shaped 

 at base, opposite, toothed, covered on the edge and 

 veins with long reddish -or claret-colored hair: heads red 

 or purple, in a very large red-rayed truss. S. Mex. 

 I. H. 9:310. A stately species with fine foliage and 

 richly colored fls., but said to be difficult to grow. Rare 

 in cult. Closely related, if not identical, is E. grandi- 

 florum, Andr6, though figured with smaller heads of 

 redder color. R.H. 1882:384. 



2. megalophyllum, Klatt (Hebeclinium macrophyl- 

 lum, Lem., not DC. H. megalophyllum, Lem.). Half- 

 shrub, robust: Ivs. opposite, round, more or less heart- 

 shaped, very large, the lower sometimes more than a 

 foot in diam., veiny: heads in large clusters (1-1 J^ ft. 

 broad) ; florets rose, the long hairlike styles conspicuous, 

 bluish. S. Mex. R.H. 1866, p. 351. Gt. 16:548. Fine 

 showy species with rich foliage, but apparently rare 

 and not recently in trade. Needs richly manured soil, 

 much light, and frequent replanting. 



3. Purpftsii, Brandegee (E. peiioldre, Hort., not Moc. 

 & Sess6). Smoothish or (var. monticolum, Brandegee) 

 sticky-hairy, loosely branched: Ivs. round-ovate, com- 

 monly heart-shaped, shortly taper-pointed, bluntly and 

 rather coarsely toothed: heads slender-stalked, Hin. 

 diam.; florets at first white, changing rapidly to pink- 

 ish lilac. Low. Calif. G.C. III. 35:163. Attractive, 

 rapid-growing, herbaceous, tender. Weak and needing 

 support. 



4. ianthinum, Hemsl. (Conodinium idnthinum, Morr. 

 Hebeclinium idnthinum, Hook.). Somewhat shrubby, 

 the thickish round sts. at first covered with a rusty 

 purplish pubescence: Ivs. large, ovate, long-stalked, 

 opposite, pointed or blunt (but not heart-shaped) at 

 base, somewhat hairy on both surfaces, serrate: fls. 

 light violet, in a large compound terminal coryinb. 

 S. Mex. B.M. 4574. A luxuriant species with heavy 

 foliage, of easy pot cult, in a warmhouse. 



5. Lasseauxii, Carr. (Ageratum Lasseauxii, Carr. 

 Conodinium Lasseauxii, Dur.). Habit of Ageratum, 

 densely covered with short glandular hairs : Ivs . 

 alternate, oblong -lanceolate, narrowed at each end, 

 bluntly toothed: heads in small compact unequally 

 stalked clusters; florets very numerous, at first white, 

 at maturity a vivid rose-color. Temp. S. Amer. 

 R.H. 1870:90. Intro, to European hort. in 1870. 

 Attractive bedding plant, but apparently rare. Proba- 

 bly not fully hardy though less tender than most of the 

 glasshouse species. Prop, easily and flowers continu- 

 ously; 1-2 ft. high. 



6. serrulatum, Hort. Shrub with lance-shaped, 

 pointed, sharply and unevenly toothed, short-stalked 

 Ivs., very unequal involucral scales, and showy reddish 

 lilac heads in large dense flat-topped clusters; florets 

 5 in each head. In European hort., and said to come 

 from S. Brazil. R.H. 1894:304. Gt. 44, p. 570. G.C. III. 

 18:265. Three to 6 ft. tall. Choice, but certainly not 

 the true E. serrulatum, DC., which has much narrower 

 finely and evenly serrulate Ivs. and 11-12-fld. heads. 



7. hecata'nthum, Baker (Hebeclinium Urdlepis, DC.). 

 Robust annual, like a large ageratum: Ivs. opposite, 

 stalked, round-heartshaped : heads showy, bluish pur- 

 ple; florets numerous (about 75); involucral scales 



ending in similarly colored hairy appendages. Temp. 

 S. Amer. Promising species, worthy of trial as a bed- 

 ding plant. 



8. araliaefdlium, Less. (E. omphalixfblium, Kunth & 

 Bouche"). Soft-wooded shrub with thick and shining 

 oblong-lanceolate Ivs. 3-8 in. long: heads loosely pani- 

 cled ; involucral scales conspicuously unequal, the outer 

 short and calyx-like, the inner 3^1 times as long; florets 

 white. S. Mex. and Guatemala. Gt. 2, p. 4, t. 39. 

 From low and moist tropical habitat and presumably 

 very, tender. Rare in cult, and not noticed recently in 

 trade. Needs rich leaf -mold, moist air, and high tem- 

 perature. Prop, by cuttings. Flowers in March. 



1434. Leaves of glasshouse Eupatoriums. a, E. riparium; b, E. 

 vernale; c, E. glandulosum; d, E. glabratum. 



9. micrfinthum, Less. (E. ligustrinum, DC. E. 

 Morisii, Hort. E. Weinmannidnum, Regel & Koern. 

 Many other hort. names, for which see Gt. 22, p. 36). 

 Lvs. opposite, elliptic-lanceolate, pinnately veined, 

 the blade somewhat toothed and slightly decurrent in 

 narrow crisped wings upon the short If .-stalk: heads 

 small and fefr-fld. but very numerous in large round- 

 topped terminal corymb; florets white, but pappus 

 pink-tinged to deep rose. Mex. Gt. 16, p. 260, t. 555, 

 figs. 1-3. Gn. 47, p. 444. G.C. II. 5, p. 53. Upright 

 shrub rather widely cult, since about 1830 under a 

 great variety of names, but chiefly as E. Weinmanni- 

 anum. 



10. conspicuum, Kunth & Bouch6 (E. grandifdlium, 

 Regel). Shrubby: Ivs. opposite, large, thin, triangular- 

 ovate, finely and sharply toothed to the very base, 

 which is somewhat decurrent upon the long If. -stalk: 

 fls. white, in ample lax panicles, almond-scented. Gua- 

 temala. Gt. lj p. 102, t. 12. Planted out in summer 

 forms a luxuriant shrub, attractive on account of its 

 excellent foliage. Best prop, by cuttings placed in 

 warm bed about the end of August. Winter-bloomer 

 in glasshouse. 



11. glandulosum, HBK. (E. adendphorum, Spreng. 

 E. adcnnnthnm, Hort., not DC. E. trapezoideum, Kunth. 



