ROBINSON. — SPERMATOPHYTES OF MEXICO. 477 



the base, 2 mm. long; pappus a short scarious un toothed cup without 

 awns. — Collected by E. W. Nelson in the vicinity of La Parada, 

 Oaxaca, altitude 2,310 to 2,620 m., 19 August. 1894, no. 991. Types in 

 herb. Gray and herb. U. S. Nat. Museum. 



Eupatorium anisopodum. Herbaceous perennial : stems terete, 

 decumbent, flex uous, irregularly branched, puberulent especially near the 

 nodes and under a strong lens, green or purplish tinged, 3 to 5 dm. high : 

 leaves ovate or rhombic-ovate, opposite, 2 to 2.5 cm. long, 1.2 to 1.7 cm. 

 broad, thickish, not punctate, crenate-serrate from the broadest portion 

 to the acutish apex, covered above with fine short curved hairs, slightly 

 paler beneath and appressed-pubescent upon the veins, 3-5-nerved, sub- 

 cuueate at the base to a short petiole (5 mm. in length) : bracts ovate- 

 lanceolate, acute, 3 to 7 mm. long, the lower petiolate the upper sessile ; 

 heads small, 25-30-flowered, 5 to 7 mm. in diameter, not numerous, irregu- 

 larly corymbose on pedicels of very unequal length ; scales of the turbi- 

 nate-campauulate involucre pluriseriate, very unequal, the outer short, 

 ovate, acuminate, herbaceous, pubescent ; the inner oblong, acute, pale, 

 2-3-nerved, ciliolate, sparingly pubescent or glabrous: corolla 2.2 mm. 

 long, probably white, glabrous except at the limb where under a strong 

 lens puberulent, the proper tube short, considerably exceeded by the 

 subcylindric scarcely ampliate throat : achenes columnar, at length black, 

 hispidulous on and between the five nerve-like angles, 1.5 mm. long; 

 pappus-bristles 15 to 20, bright white, about equalling the corolla. — 

 E. pycnocephalum, Coult. in J. Donnell Smith, Enuiu. PI. Guat. ii. 94 

 (1891), not Less. — Collected by H. von Tiirckheiui at Santa Rosa, 

 Department Baja Vera Paz, Guatemala, altitude 1,540 m., April, l-< 7, 

 no. 1177 of Mr. J. Donnell Smith's Guatemalan set. Type in herb. 

 Gray. While possessing something the habit of E. pycnocepkalum, Less., 

 this plant is readily distinguished by its very different pluriseriate 

 involucre. 



Eupatorium araliaefolium, Less. Linnaea, vi. 403 (1831). Add 

 syn. E. heterolepis, Robinson, Proc. Am. Acad. xxxv. 335 (1900). 



Eupatorium Bigelovii, Gray, Bot. Mex. Bound. 75 (1859). All 

 syn. E. madrense, Wats. Proc. Am. Acad. xxvi. 137 (1891). 



Eupatorium coxspicuum, Kunth & Bouche, Ind. Sem. Hort. Berol. 

 1847, p. 13. Of this, E. grandifolium, Regel, Gartenflora, i. L02, t. 12 

 (1852), is certainly a synonym. 



Eupatorium Coulteri. Stem slender, straight, terete, densely fus- 

 cous-puberulent : leaves opposite, deltoid-ovate, acute or subcauda 

 somewhat hastate lobed at the almost truncate base, shallowly dentate, 



