356 



COMPOSITAE. 



Vol. III. 



Receptacle flat. 



Flowers white ; leaves ovate. 



I eaves thin, ->'- 5' long, sliarply dentate, acuminate. 

 I , ,n es firm, 1 ' 2' long, obtusi ly dentate, acute or ohtusish. 

 Flowers pinl< to purple; leaves deltoid ovale. 

 Receptacle conic; flowers blue or violet ; lea\es petioled. 



8. E. urticaefolium. 



9. E. aromaticutn. 

 li. incarnatum, 

 E. coelestinum. 



20. 



21. 



i. Eupatorium capillifolium I Lam. 1 Small. 

 Dog-fennel. I log-weed. Fig. 4152. 



Artemisia capillifolia Lam. Encycl. 1: 267. 1783. 

 Eupatorium foeniculi des Walt. Fl. Car. 199. 1788. 

 /:'. foeniculaceum Wiild. Sp. PI. 3: 1750. 1804. 

 E. capillifolium Small, Mem. Torr. Club 5 : 311. 1894. 



Erect, paniculately much branched, with the as- 

 pect of an Artemisia, the stem finely pubescent. 

 4-io high. Leaves crowded, glabrous or nearly 

 so, alternate, pinnatifid into filiform segments, the 

 lower petioled, the upper sessile; heads very nu- 

 merous, about ii" high, short-pedicelled, race- 

 mose-paniculate, 3-6-flowered ; bracts of the invo- 

 lucre in about 2 series, linear, cuspidate, narrowly 

 scarious-margined, glabrous ; flowers greenish- 

 white. 



In fields, Virginia to Florida. In ballast, at Phila- 

 delphia. Also in the West Indies. Sept. 



2. Eupatorium maculatum L. Spotted 

 Joe-Pye Weed. Fig. 4153. 



E. maculatum L. Amoen. Acad. 4; 288. 1755. 

 Eupatorium purpureum var. maculatum Darl. Fl. 



Cest. 453. 1837. _ 



Eupatorium maculatum amocnum Bntton, Mem. 



Torr. Club 5 : 312. 1894. 



Similar to the two following specie:, sca- 

 brous or pubescent, often densely so, 2-6 

 high. Stem usually striate, often rough and 

 spotted with purple ; leave? thick, ovate or 

 ovate-lanceolate, coarsely dentate, verticillate 

 in 3's-S's, or the upper ones opposite ; inflores- 

 cence depressed, cymose-paniculate; pedicels 

 and outer scales of the involucre pubescent; 

 flowers pink or purple. 



In moist soil, Newfoundland to New York, 

 Kentucky, British Columbia, Kansas and New 

 Mexico. Spotted boneset. Perhaps to be re- 

 garded as a race of E. purpureum. Aug.-Sept. 



3. Eupatorium Bruneri A. Gray. Bru- 

 ner's Trumpet-weed. Fig. 4154- 



Eupatorium Bruneri A. Gray, Syn. Fl. i = ; 96. 1884. 



Eupatorium Rydbergi Britton, Manual 921. 1901. 



Stem tall, pubescent, often densely so, at 

 least above. Leaves verticillate in 3's-5's, rather 

 slender-petioled, lanceolate, serrate, acuminate 

 at the apex, narrowed at the base, scabrous 

 above, finely densely pubescent and reticulate- 

 veined beneath, 4-6' long, -2' wide ; inflores- 

 cence depressed or subpyramidal ; outer bracts 

 of the cylindric involucre pubescent; flowers 

 pink or purple. 



In moist soil. South Dakota to Wyoming, Ne- 

 braska and Colorado. Apparently erroneously 

 recorded from Iowa. July-Sept. 



