42 PROCEEDINGS OF THE AMERICAN ACADEMY. 
em, 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 campanulate ; 
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 purple: 
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.). 4 
3 _ Oropaprus epaLeaceus, Hemsl., var. (?) Pringlei, n. var. Habit — 
: and foliar characters of the species: stem above and the ultimate 4 
— Branches pubescent with spreading or reflexed subvillous hairs: heads 
= ive of the rays 12 to 16 mm. in diameter; inner involucral bracts 
oxy ee ss g, glabrous, longitudinally 3-ribbed on both surfaces: 
v7 rr of Morelos: near Cuernavaca, altitude 1585 My 
cree ee: so5 Pringle, uo. 6521 (hb. Gr. js distributed 98 — 
oS aeumis us, Watson. Stateof Guerrero: Ignala, 3 November, — 
Nn E. W. D. Holway, no. 5313 (hb. Gr.). ise ‘ 
: = (Platypteris) Tonduzii, n. sp. Stem brownish, striate, 
