GREENMAN. — SPERMATOPHYTES FROM MEXICO, ETC. 265 
spreading or subreflexed, inner involucral bracts lanceolate to lance- 
oblong, obtuse: ray-flowers 5 to 6, sterile; rays short-oblong, 4 to 5 mm. 
long, nearly as broad, orange-yellow: disk-flowers about 20: mature 
achenes linear, 2 to 6 mm. long, glabrous or sparingly hispidulous, awn- 
less or with reduced awns. — Mexico. Federal District: Serrania de 
Ajusco, Ajusco Station, altitude 2895 m., 9 November, 1903, 0. G. 
Pringle, no. 11,486 (hb. Gr.) This plant was distributed as ‘* Bidens 
Jerulaefolia, DC.,” but the prostrate habit, the small ai and heads, 
and the short rays amply distinguish it from that specie 
Bipens Seemannu, Schz. Bip. in Seem. Bot. Herald, 307 (1852-57) ; 
Hemsl. Biol. Cent.-Am. Bot. ii. 203, as to plant of Seemann, not of 
Parry and Palmer. B. Seemanni, Gray, Proc. Am. Acad. xix. 16. 
Cosmos Seemanni, Gray, 1.c. This species has been referred both to 
Bidens and to Cosmos, The mature achenes are linear, elongated, 13 mm. 
or less in length and nearly of the same diameter throughout, but not 
attenuated above into a beak as in true Cosmos. Certainly if the two 
genera are to be kept separate the above species must be retained in the 
genus Bidens, where it was originally placed by Schultz Bipontinus. 
Besides the original specimen collected by Seemann, fragments of which 
are in the Gray Herbarium, and the Ghiesbreght plant cited by Dr. Gray 
in the paper referred to above, there are now at hand excellent specimens 
collected by Mr. C. G. Pringle in fields, near Uruapan, State of Micho- 
acan, altitude 1525 m., 8 October, 1904, no. 8845 (hb. Gr.). The finely 
ivided pinnatisect leaves, the deep purple rays, and the long linear 
smooth-bodied usually 6-awned achenes render this species one of the 
most striking and easily recognized of the entire genus. 
Osmos ocellatus, n. sp. Annual: stem erect or ascending, sim- 
ple or branched, 3 to 5 dm. high, more or less pubescent with crisp 
jointed hairs: leaves opposite, petiolate, 2 to 8 em. long including the 
petiole, 1.5 to 4 cm. broad, bi-tripinnately parted, dark green above, 
pale beneath, subappressed-pubescent on both surfaces ; segments lance- 
olate or lance-linear, acute; petioles 0.5 to 4 cm. long, pubescent: heads 
1.2 to 2 cm. high, including the rays 3 to 4 cm. in diameter, borne on 
long naked striate somewhat pubescent peduncles 1 to 2 dm. in length : 
involucre double, the outer bracts subfoliaceous, linear or lance-linear, 
callous-tipped, 8 to 10 mm. long, densely pubescent with long jointed 
somewhat interwoven hairs; inner involucral-bracts narrowly elliptic- 
ovate, acutish, yellowish-brown in color, scarious-margined : ray-flowers 
about 8, sterile; rays obovate-oblong, 1.5 cm. long, two-thirds as broad, 
notched with a broad truncated ek, orange-yellow, usually with a 
