560 



EUPATORIUM 



the reddish veins, opposite, toothed: heads red or pur- 

 ple, aggregated into a very large red-rayed truss. Mex. 

 I.H. 9:310. 



iinthinum, Hemsl. {Rebeclinium idnthinum, Hook.). 

 Sub-shrub, but sot't-wooded, the terete branches rusty- 

 pubescent : Ivs. opposite, long-petioled, cuneate-ovafe 

 and serrate: fls. light purple, in a large, compound, ter- 

 minal corymb. Mex. B.]\I. 4ri74. 







792. Eupatorium perfoliatum (X/l^ 



BB. Heads white [plants valnable for cut-flowers). 



gleclionoph;^lluin, lj%^s.{A(fer(itum conspicuinn,^OTt.). 

 Half shrubby : Ivs. opposite, oval-pointed or ovate- 

 lanceolate^ nearly glabi'ous, ::S-iierved, toothed, petiolate: 

 rts. pure white, about 30 in each head. Chile. —Tender 

 fflassbouse perennial ; but it TCi.B.y be flowered in the 

 open the first year if seeds are sown early. 



rip&rium, Regel. Fig. 791 a. Diffuse, 'becoming 

 woody at base, 2 ft., the stems thin and usually reddish 

 and puberulent : Ivs. opposite, lanceolate-acuminate, 

 uarrowed into a long petiole, prominently 3-ribbed, den- 

 tate or crenate-dentate : heads in rather compact, long- 

 stalked clusters. S. Amer. — Good winter bloomer. Best 

 for the florist. 



triste, DC. (E. trUste, Hort.). Fig. 791 h. Strong 

 herb (sub-shrub in the wikl), with hairy more or less 

 angled or striate stems: Ivs. long-petioled, ovate or ob- 

 long-ovate, hairy and rugose (reminding one of elm or 

 nettle Ivs.), very veiny, crenate-dentate: fls. many, 

 bright white, in a large, terminal corymb. Mts. of .Ja- 

 maica. —Now becoming i>opuhir as a pot subject and for 

 eut-flowers. 



glanduldsum, HBK. {H. adenopJwrtim, Spreng. E. 

 ' I dendnthu m, ilort., not DC. E. AmericAnurn, Hort.). 

 l^Mg. 791 c. Diffuse, at length somewhat decumbent at 

 base, the branches glandular-hairy : Ivs. deltoid- or 

 imneate-ovate, slender-petioled, coarsely and some- 

 times unevenly crenate-dentate, sparsely pubesci'iit be- 

 low: heads pure white, agoratum-like, in close clusters. 

 Mes. 



glabritum, HBK. (£1. Regans, 'Hort. E. Jatifidium, 

 llcrt. ). Fig. 791 d. Shrubby, erect, with thin, hard, gla- 



EUPHORBIA 



brous brown stems : Ivs. thickisb, small, lance-oblong 

 or ovate-oblong, tapering into a strong petiole, blunt- 

 acute, undulate or small-toothed: fls. (sometimes blush) 

 in ascending clusters, which combine to form a strong, 

 terminal panicle. Mex. 



AA. Hardy or border plants. 

 B. Heads purple. 

 purp^reum, Linn. Joe-Pye Weed. Tall, rank plant of 

 low grounds (reaches 8-9 ft.) : Ivs. whorled, oblong or lan- 

 ceolate, acuminate, coarsely serrate and veiny: beads in 

 large, compound clusters, purple to flesh-color (rarely 

 almost white). Var. maculatum, Darl. (E, macuMtum, 

 Linn.), is mostly lower and roughish pubescent, the 

 stem purple-marked. Var. amoenum, Gray. Still lower, 

 (2 ft. high), nearly glabrous, the Ivs. often opposite.— A 

 good species for bold effects in a border or against 

 shrubbery. Common, and widely distributed. 



BB. Heads wliite. 

 c. Lvs. perfoliate (united arouvd the stem). 



perioli&tum, Linn. Boneset. Thoroughwort. Fig. 

 79'J. Stout, rank-smelling, pubescent, 3-5 ft.: Ivs. lan- 

 ceolate, rugose and pubescent, finely toothed : heads in 

 dense white cymes. — Common in low ground. Much 

 used in domestic medicine. Excellent for striking 

 effects, particularly in low grounds. 



cc. it's, not perfoliate. 



altissiraum, Linn. Tall (reaches 7-8 ft.),densely pubes- 

 cent, branchy : lvs. opposite, lanceolate-acuminate, the 

 petiole very short, remotely dentate or entire: heads 

 only 5-fld. Open places. Pa. southward. 



Album, Linn. One-3 ft., pubescent : lvs. opposite, 

 nearly or qxiite sessile, oblong or ]ance-ol)long, coarsely 

 serrate. Sandy soil, E. states. 



ageratoldes, Linn. f. White Snakeeoot. Fig. 793. 

 Neat, glabrous, branchy herb, 3-4 ft. : lvs. opposite, thiu, 

 ovate with broad base, acuminate, coarsely and sharply 

 toothed: heads small, in a loose but ample inflorescence. 

 Hich woods, Can. to La. 



arom&ticum, Linn. Resembles the last, but usually 

 pubescent: lvs. thickish and blunt or merely acute, the 

 teeth blunt, later-flowering. Dry soil, E. states. 



Var. melissoldes. Gray [E. 

 Frdseri and E. cordifdlinm, 

 Hort.). Slender and rough- 

 ish, strict: heads 5-12-fld. : 

 lvs. subcordate-ovate or ob- 

 long, obtuse, crenulate-den- 

 tate, sometimes with coarser 

 teeth, the petioles very 

 short. S. E. states. 



Various species of the old 

 genus Hehecliiiiuni may be ex- 

 pected in amuteur collections, 

 especially £. niacrophyllurri , 

 Linn. (H. macropliyllum, DC.) , 

 with very lartje subcordate- 

 toothed lvs., pnrple heads and 

 purple-hairy stems. R.H. 1866: 

 :ioO. Other glasshouse species 

 are : E. {jrandiflunnn, Andre, 

 with rugose cordate coarse- 

 toothed lvs. and reddish heads 

 (R.H. 1882:384); E. Haaged- 

 mnn, Regel tfc Koern.. with oval- 

 acuminate coarse-toothed lvs . 

 and small, white heads; E.tni- 

 rnhithum. Less., from Mex. 

 (known in cult, as E. Weinmsn- 

 niiinnm, Regel & Koern.), with 

 i'lliptir--lanfeolatelvs. andlarge. 793. Eupatorium ageratoides. 

 fragrant wliite heads {On, 47, p. (x ^4 ) 



444. G.C. II. .'S:53); E.prdljvm, 



N.E. Br., with oval, velvety lvs.. white heads, and whole plant 

 glandular- sticky (G.C. 111. 7:321). l_ g, g. 



E0PH6RBIA (classical name, said by Pliny to be in 

 honor of King Juba's physician ; possibly from the 

 (ireek word for fat). Enphorbiiicea'. Spurge is a name 

 sometimes applied to the genus as a whole, but is, per- 

 haps, better restricted to one or more species. One of 

 the largest plant genera, of perhaps a thousand species, 

 not less than 700, of very diverse habit, and found in 



