'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. 



Idnthinum, Hemsl. {Meheclinuim idnthinitm, Hook.). 

 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. Eupat 



perfoliatum (XM)- 



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



glechonophyllum, hean.iAgerdtwm consp{cuum,5ort.) . 

 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. 



ripirlum, Regel. Fig. 791 o. 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 6. 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-fiowers. 



glanduldsum, HBK. {E. adendphorum, Spreng. E. 

 adendnthiim, 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. 

 Pdex. 



glabrJltum, HBK. {.B- ilegans ,'B.OTt. E. lalifdlium, 

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



EUPHOBBIA 



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 harder plants. 

 B. Heads purple. 

 purpilreum, Linn. Joe-Pte 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). V.ar. maculatum, Darl. {E. maeulAtum, 

 Linn.), is mostly lower and ripui,'hish pubescent, the 

 stem ]iurple-marked. Var. amcenum. 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 ifhite. 

 c. Lvs. perfoliate [united around the stem). 

 perioliitum, Linn. Boneset. Thoroughwoet. Fig. 

 792. Stout, rank-smelling, pubescent, 3-5 ft. : lvs. 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. J^vs. not perfoliate. 



altisslmum, 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. 



ilbum, 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. : lvs. opposite, thin, 

 ovate with broad base, acuminate, coarsely and sharply 

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

 Rich 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. 

 FrAseri and E. cordifdliuni, 

 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 HebecHnitim may be ex- 

 pected in .amateur collections, 

 especially E. macrophyllum. 

 Linn. ( H. macrophyllum, DC. ) . 

 with very large subcordate- 

 toothed lvs., purple heads and 

 purple-hairy stems. R.H. 1866: 

 350. Otlier glasshouse species 

 are: E. grandiflbrum, Andre, 

 with rugose cordate coarse- 

 toothed lvs. and reddish heads 

 (R, H. 1882:384): E. Raaged- 

 num. Regel ,ta Kceru., with oval- 

 acuminate coarse-toothed lvs. 

 and small, white heads; E. ini- 

 crdnthum. Less., from Mex. 

 (known in cult, as E. Weinman- 

 niiinum. Regel & Koern.),with 

 elliptic-lanceolate Ivs. and large, 

 fragrant white heads (Gu. 47, p. 

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

 N.E. Br., with oval, velvety h 



793. Eupatorium ageratoide 



iX%.) 

 white heads, and whole plant 



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



EUPHOKBIA (classical name, said by Pliny to be in 

 honor of King Juba's physician; possibly from the 

 Greek word for fat). EuphorbiAceas. Sporge is a uame 

 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 



