GREENMAN. — CENTRAL AMERICAN SPERMATOPHYTES. 45 



plant, however, is uuquestiouably a Bidais, and the correction of the 

 label may now be definitely made. 



Perityle Rosei, n. sp. Stems erect, 1 to 2 dm. liigh from a ligneous 

 base, more or less striate, puberulcut : leaves opposite, or the uppermost 

 alternate, petiolate, ovate-triangular, frequently somewhat halberd- 

 shaped, 1 to 3 cm. long, 0.5 to 2 cm. broad, acute or rounded at the 

 apex, entire or subentire, subtruncate at the base and decunent 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 

 arose 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 Bolanos, 15-17 September, 1897, 

 Dr. J. N. Rose, no. 2947 (hb. Gr., and hb. U. S. Nat. Mus.). 



Galeana hastata. 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 1.S20 referred spec- 

 imens secured by Humboldt and Bonplaud at Valladolid, Mexico, to the 

 Linnaean genus Unxia. Lessing in 1832, recognizing the discrepancy 

 between the Mexican annual and typical Unxia, apparently unaware of 

 the already published Galeana, founded a new genus, Chlamysperma, 

 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 



