GREENMAN, — CENTRAL AMERICAN SPERMATOPHYTES. 45 
plant, however, is unquestionably a Bidens, and the correction of the 
label may now be definitely made. 
Perityle Rosei, n. sp. Stems erect, 1 to 2 dm. high from a ligneous 
base, more or less striate, puberulent: leaves opposite, or the uppermost 
alternate, petiolate, ovate-triangular, frequently somewhat halberd- 
shaped, 1 to 3 em. long, 0.5 to 2 cm. broad, acute or rounded at the 
apex, entire or subentire, subtruncate at the base and decurrent on the 
petiole, puberulent on both surfaces: heads about 6 mm. high, on pedun- 
cles 3 cm. or less in length, many-flowered, radiate: involucre of about 
24 lanceolate acute bracts, and as well as the peduncles pubescent: ray- 
flowers about 13; rays white: disk-flowers 50 to 60: pappus of both 
both ray- and disk-flowers of two slender subequal setae, which are nearly 
or quite as long as the achene, and of intermediate more or less united 
erose scales: mature achenes about 2.5 mm. long, subcartilaginous- 
margined and ciliated, glabrous on both surfaces. — Mexico. State of 
Jalisco: in the Sierre Madre, west of Bolafios, 15-17 September, 1897, 
Dr. J. N. Rose, no. 2947 (hb. Gr., and hb. U. S. Nat. Mus.). 
GALEANA HastTaTA, La Llave. Although this species was well de- 
scribed by La Llave in 1824, nevertheless by subsequent authors it seems 
to have been little understood, and somewhat traditionally treated as an 
herbaceous monotype of doubtful affinity. Kunth in 1820 referred spec- 
imens secured by Humboldt and Bonplaud at Valladolid, Mexico, to the 
Linnaean genus Unzia. Lessing in 1832, recognizing the discrepancy 
between the Mexican annual and typical Unxia, apparently unaware of 
the already published Galeana, founded a new genus, Chiamysperma, 
on the Humboldt and Bonpland plant, and established the binomial 
Chlamysperma pratense. Later, in 1873, Bentham and Hooker referred 
the Chlamysperma pratense, Less. to Villanova, a genus with pinnatisect 
leaves and different technical characters of the head; and at the same 
time retained Galeana of La Llave as a distinct genus. Hemsley in the 
Biologia Centrali-Americana, and Hoffmann in Engler and Prantl’s 
Natiirlichen Pflanzenfamilien follow the course of Bentham and 
Hooker. There are in the Gray Herbarium several specimens, which 
were identified by Dr. Gray with Galeana hastata, and which too 
correspond in every detail with the careful characterization of La Llave. 
These specimens, together with a part of the original plant on which 
Lessing based his new genus Chlamysperma, as well as a considerable 
suite of recently collected material, have been examined by the writer, 
and there can be no doubt but that they all represent one and the same 
Species, as in every essential morphological character there is exact 
