OF ARTS AND SCIENCES. 171 



(in the Berlin Herbarium), but from a specimen collected by 

 Schaffner in Orizaba, October, 1855. The latter plant was identi- 

 fied with Ebrenberg's by Schultz himself, who employed the ! sign 

 to express special definiteness. Bilimek's no. 576, Orizaba, May, 

 1867, and Bourgeau's 1703, Valley of Cordova, January, 1866, 

 have been identified with this sj^ecies by Dr. Gray. Mr. Pringle's 

 plants collected on ledges of the Tamasopo Canon, November aud 

 December, 1890 (nos. 3649 and 3956), are also certainly to be re- 

 ferred here, although the leaves are more deeply hastate. 



Eupatorium Schaffneri, Schultz Bip. Boot a cluster of 

 thickened fibres: stems 2-3, terete, pubescent, tending to turn 

 dark purple, a foot or two in height, sparingly branched: leaves 

 opposite, petiolate, ovate, crenate-serrate, acutish, truncate at the 

 base, subglabrous, 1 J inches long, an inch wide : petioles 4-7 lines 

 in length, the upper shorter: heads corymbose, pedicellate, about 

 25-flowered, 1^ lines long (somewhat immature) : scales of the invo- 

 lucre equal, obtusish or more or less pointed, thin, sub-transparent, 

 but with 2-3 strong nerves in the middle near the base : achenes 

 immature. — Description drawn from the type collected by Schaffner 

 in Mexico near S. Angelos, 1855 (u. 28). In the Gray Herbarium 

 the following specimens may be referred to this species: Schaffner's 

 no. 292 ex convalli San Luis Potosi, August, 1876; Parry and 

 Palmer's 345, from a similar locality, 1878; and Pringle's 3662, 

 Flor de Maria, Mexico, October, 1890. These specimens, which 

 are more mature than the type, show the heads to be a trifle larger, 

 the ripe achenes to be small, dark, scarcely contracted below, pu- 

 berulent both on and between the angles. 



Eupatorium Lemmoni. Stoloniferous : stems subsimple or 

 much branched, terete, dark purple, with close white pubescence : 

 leaves all opposite, sessile, mostly elliptic or ovate-elliptic, obtus- 

 ish, 10-14 lines long, about half as wide, crenate-serrate (some- 

 times obsoletely so), glabrous above, sparingly pubescent upon the 

 veins beneath: the lower leaves smaller, rounder; the uppermost 

 more ovate and acute: heads 3^ lines high, on peduncles half an 

 inch in length: the sharply pointed nearly smooth scales of the 

 involucre subequal: flowers rather numerous; corollas white; 

 achenes somewhat puberulent. — First collected by Mr. J. G. Lem- 

 mon in the Chiricahua Mountains of Southern Arizona, 1881 

 (n. 316 in part) ; then by Dr. Edward Palmer in Southwestern 

 Chihuahua, August to November, 1885 (n. 332) ; and by Mr. 

 Pringle on cool rocky slopes of the Sierra Madre, September, 1887 



