307 
Philibertia undulata A. Gray, Proc. Am. Acad. 12: 65. 1876, 
Piulibertia crispa Hemsley, Biol. Centr. Am. 2: 318. 1881. — 
Very variable as to the size and undulation of the leaves. 
No. 1326, collected by C. G. Pringle in Chihuahua, is undoubtedly 
this species, but there is scarcely any undulation on the leaf mar- 
gin and no trace, except on a few young leaves, of the whitish 
midvein, so prominent on the Texan specimens. Wright, no. 
1679, from New Mexico, also belongs here, though the gynoste- 
gium is somewhat more sessile than in most specimens. In the 
original description by Dr. Torrey of Sarcostemma undulatum 
there is reference to its similarity to Sarcostemma crispum Benth., 
doubting, however, its identity with that plant, owing to the latter 
being “a humble species only half a foot long, the peduncles 
barely equal the petioles;” but as specimens of S. undulatum 
have since been collected (Austin, Texas, E. Hall, 1872, no. 518, 
in U.S. Nat. Herb.) which measure only 12 cm. in length, and 
others again with very short petioles and peduncles, there is little 
doubt that this is the species described by Bentham, of which 
only one original specimen is known. In other respects the de- 
scription of S. crzspum is that of S. undulatum in every detail ex- 
cept as regards some of the larger leaved Texan specimens. 
Original locality, Aguas Calientes, Mexico. Type in Herb. 
Kew. 4 
Texas: Tom Greene Co. Tweedy, 1879; Blanco, Wright, 
nos. 1678", 547, October, 1849; Mexican Bound. Surv. nos. 1066 
and 1068; T. Havard, October, 1881; Dallas, Reverchon, 1881 ; 
Austin, Hall, no. 518. 
New Mexico: Wright, no. 679. 
Arizona: E. Palmer, 1869. 
Mexico: C.G. Pringle, no. 1326, 1887. 
* PHILIBERTELLA CYNANCHOIDES (Decne.) 
Sarcostemma cynanchoides Decne. in DC. Prodr. 8: 540. 1844. 
Gonolobus viridifora Torr. Ann. Lyc. N. Y. 2: 219. 1828. 
Not Nuttall, 1818. 
Phihibertia cynanchoides A. Gray, Proc. Am. Acad 12: 64. 
1876. 
Philibertia vuidifiora ie & Rewty, Trans. N. Y. Acad. Sci. 
oct Ges | | 
