'560 



EUPATORIUM 



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

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

 l.H. 9:310. 



ianthinum, Hemsl. (Hebeclinium ianthinum, Book.). 

 Sub-shrub, but soft-wooded, the terete branches rusty- 

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

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

 minal corymb. Mex. B.M. 4574. 



792. Eupatorium perfoliatum (X%). 



BB. Heads white (plants valuable for cut- flowers). 



glechonophyllum, Less. ( Ageratum conspicuum,Hort.). 

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

 lanceolate, nearly glabrous, 3-nerved, toothed, petiolate: 

 fls. pure white, about 30 in each head. Chile. Tender 

 glasshouse perennial ; but it may be flowered in the 

 open the first year if seeds are sown early. 



riparium, Regel. Fig. 791 a. Diffuse, becoming 

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

 and puberulent : Ivs. opposite, lanceolate-acuminate, 

 narrowed 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 &. Strong 

 herb (sub-shrub in the wild), 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 popular as a pot subject and for 

 cut-flowers. 



glanduldsum, HBK. (E. adendphorum, Spreng. E. 

 adendnthum, Hort., not DC. E. Americdnum, Hort.). 

 Fig. 791 c. Diffuse, at length somewhat decumbent at 

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

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

 times unevenly crenate-dentate, sparsely pubescent be- 

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

 Mex. 



glabratum, HBK. (E. ttegans, Hort. E. latifdlium, 

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



EUPHORBIA 



brous brown stems : Ivs. thickish, 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. 



purpureum, 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: heads in 

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

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

 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 white. 

 c. Lvs. per foliate (united around the stem). 



perfoliatum, Linn. BONESET. THOROUGHWORT. Fig. 

 792. 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. Lvs. not perfoliate. 



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

 cent, branchy: Ivs. 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 : Ivs. opposite, 

 nearly or quite sessile, oblong or lance-oblong, coarsely 

 serrate. Sandy soil, E. states. 



ageratoides, Linn. f. WHITE SNAKEROOT. Fig. 793. 

 Neat, glabrous, branchy herb, 3-4 ft. : Ivs. opposite, thin, 

 ovate with broad base, acuminate, coarsely and sharply 

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

 Rich woods, Can. to La. 



aromaticum, Linn. Resembles the last, but usually 

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

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



Var. melissoides, Gray (E. 

 Fraseri and E. cordifdlium, 

 Hort.). Slender and rough- 

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

 Ivs. 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 Hebeclinium may be ex- 

 pected in amateur collections, 

 especially E. macroph&llum , 

 Linn. (H. macrophyllum, DC.) , 

 with very large subcordate- 

 toothed Ivs., purple heads and 

 purple-hairy stems. R.H. 1866: 

 350. Other glasshouse species 

 are: E. grandiflbrum, Andre, 

 with rugose cordate coarse- 

 toothed Ivs. and reddish heads 

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

 num, Regel & Kcern., with oval- 

 acuminate coarse-toothed Ivs. 

 and small, white heads; E. mi- 

 crdnthum, Less., from Mex. 

 (known in cult, as E. Weinman- 

 nianum, Regel & Koern.), with 

 elliptic-lanceolate Ivs. and large, 793. Eupatorium ageratoides. 

 fragrant white heads ( Gn. 47, p. (X M ) 



444. G.C. II. 5:53); E. probum, 



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

 glandular-sticky (G.C. III. 7:321). L. H. B. 



EUPHORBIA (classical name, said by Pliny to be in 

 honor of King Juba's physician; possibly from the 

 Greek word for fat). Euphorbiacece . 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 



