478 PROCEEDINGS OF THE AMERICAN ACADEMY. 



thin, harsh and slightly scabrous upon both surfaces, 4 to 5 cm. long, 

 half as broad, minutely punctate, slightly pubescent upon the nerves ; 

 slender fuscous-pubescent petioles 1 cm. long : heads in rounded axillary 

 and terminal thyreoid panicles; pedicels filiform, fiexuous, covered with 

 fine spreading purple pubescence; bracts and bractlets subulate, minute; 

 involucre turbinate, the lower much reduced scales somewhat decurrent 

 upon the pedicels, the inner scales oblauceolate-oblong, acuminate, erose, 

 puberulent or granular dorsally, thin, striate, ofteu purplish-tinged ; 

 flowers about 8 : corolla tubular, slightly and gradually narrowed from 

 the summit to the base, essentially glabrous, slightly exceeding the bar- 

 bellate pappus: achenes dark-colored, upwardly hispid upon the prominent 

 augles. — E. ageratifolium, var. purpureum, Coulter, Bot. Gaz. xvi. 98 

 (1891). — Collected by H. von Tiirckheim in Coban, Depart. Alta Vera 

 Paz, Guatemala, altitude 1,415 m., March, 1887, no. 52 of Mr. John 

 Dounell Smith's sets. This plant differs from E. ageratifolium, DC, 

 so greatly in pubescence, leaf-texture, involucre, and inflorescence that 

 intergradatiou does not appear likely. 



Eupatoeium dasycakpum, Gray, Ptoc. Am. Acad. xxii. 420 (1886). 

 Add syn. Stevia rapunculoides, DC. Prodr. v. 124 (1836). 



Eupatorium dryophilum. Perennial from a thickish branched 

 caudex ; stems several, erect, 5 to 7 dm. high, terete, finely striate, 

 puberulent or tomentulose, slightly scabrous, not glandular, reddish 

 brown, branched at the summit: leaves opposite or ternate, sessile, ovate 

 or oval, the lowest obtuse, the upper acute, all 3-nerved, shal lowly few- 

 toothed, thickish, reticulate-veiny, very scabrous upon both surfaces, 

 entirely destitute of glands or resinous particles: heads large, 1.4 cm. 

 in diameter, sleipler-piidicelled, erect; involucral scales thin, green, oval 

 to oblong, rounded at the apex, 4-5-seriate, striate, glabrous, mealy not 

 \ i- id : corollas purple, glabrous except at the short-toothed limb: pappus- 

 bristles sordid, barbellate, very unequal; achenes dark olive, 4 mm. 

 long, granular. — Collected by Dr. Edward Palmer, on the Rio Blanco, 

 Jalisco, October. 1886, no. 651, and by C G. Pringle with oaks and 

 pines "ii roteky hills near Guadalajara, nos. 2171, 2323. This species is 

 near II. pleianthum, Robinson, but differs from it in the absence of resin- 

 • .I- globules upon the leaves and tin- presence of mealiness upon the 

 involucre which is not viscid, also in its shorter darker achenes with fine 

 trau-verse striatum. 



Eupatorium htssopinum, Gray, Proc. Am. Acad. xv. 28 (1880). 

 Add syn. A'. koeUiaefolium, Greene, Pittouia, iii. 31 (1896). Identity 



