42 PROCEEDINGS OP THE AMERICAN ACADEMT. 



cm. in length: involucral bracts 2-seriate, lanceolate, 12 to 15 mm. long, 

 3 to 5 mm. broad, acute, densely hirsute-pubescent : ray-flowers about 13 ; 

 rays yellow, 1.5 to 2 cm. long, 7 to 10 mm. broad, 3-dentate : disk- 

 flowers numerous : pappus of two aristae with intermediate lacerated and 

 more or less united squamellae : achenes laterally compressed, slightly 

 pubescent, ciliate along the inner margin. — Mexico. State of 

 Zacatecas : in the Sierra Madre, 18 August, 1897, Dr. J. N. Rose., 

 no. 2391 (hb. Gr., and hb. U. S. Nat. Mus.). 



Zexmenia Rosei, n. sp. An herbaceous perennial: roots tuberiform : 

 stem erect, 3 to 4 dm. high from a ligneous base, sparingly branched 

 below, simple above, densely pubescent with spreading villous hairs with 

 which is intermixed a fine puberulence : leaves confined chiefly to the 

 lower part of the stem, opposite, short-petiolate, oblong-lanceolate to 

 somewhat oblanceolate, 6 to 18 cm. long, 2 to 5.5 cm. broad, acute or 

 obtuse, rather sparingly dentate, dark green and tuberculate-hispid above, 

 paler and prominently reticulate-nerved and densely villous-pubescent be- 

 neath especially on the anastomosing veins : inflorescence a few-headed 

 close terminal cyme, subtended by 2 to 4 well developed leaves or folia- 

 ceous bracts: heads about 12 mm. high, radiate: involucre cami^anulate ; 

 bracts of the involucre 2-3 -seriate, the outer foliaceous, oblong or oblan- 

 ceolate, obtuse, villous-pubescent, the inner thinner, stramineous below, 

 purplish and ciliate towards the apex: ray-flowers fertile; rays including 

 the tubular portion 12 to 15 mm. long, 4 to 6 mm. broad, deep jiurple : 

 disk-flowers numerous : pappus of both ray- and disk-flowers much- 

 reduced, consisting of a crown of minute scales : achenes of both ray- and 

 disk-flowers narrowly winged, glabrous. — Mexico. Territory of 

 Tepic : between Pedro Paulo and San Blacisto, 4 August, 1897, Dr. J. 

 N. Rose, no. 1987 (hb. Gr., and hb. U. S. Nat. Mus.). 



Otopappus epaleaceus, Hemsl., var. (?) Pringlei, n. var. Habit 

 and foliar characters of the species : stem above and the ultimate 

 branches pubescent with spreading or reflexed subvillous hairs : heads 

 exclusive of the rays 12 to 16 mm. in diameter; inner involucral bracts 

 lanceolate, acutish ; rays short, pale-yellow ; pappus of 2 unequal awns 

 with intermediate scales which are 0.5 to 0.75 mm. in length: mature 

 achenes 4 mm. long, glabrous, longitudinally 3-ribbed on both surfaces. 

 — Mexico. State of Morelos : near Cuernavaca, altitude 1585 m., 

 12 September, 1896, C. G. Fringle, no. 6521 (hb. Gr.), distributed as 

 Otopappus acumiuatus, W'dtsou. Stateof Guerrero : Ignala, 3 November, 

 1902, J^. W. D. Holumy, no. 5313 (hb. Gr.). 



Verbesina (Platypteris) Tonduzii, n. sp. Stem brownish, striate, 



