356 PROCEEDINGS OF THE AMERICAN ACADEMY 



is found in California (V. Rattan and G. R. Vasey), but there are no 

 Mexican specimens in the Gray herbarium. 



Nes^a longipes, Gray. At Parras, Coahuila (333), where it 

 was also collected by Gregg. 



Nes^a salicifolia, HBK. Near San Luis Potosi (654 Schaff- 

 ner) ; 246 Parry & Palmer. 



Jussi^A REPENS, Linn., var. Californica, Watson. With mostly 

 spatulate leaves, smaller flowers and short pedicels. At Parras (334), 

 and near Morales (173 Schaffner, together with the typical form). 

 247 Parry & Palmer and 183 Coulter are the same. 



Jussi^EA SUFFRUTICOSA, Linn. Near Morales (174 Schaffner). 



LuDWiGiA PALUSTRis, Linu. Near Morales (127 Schaffner). 



Q^^NOTHERA Drummondii, Hook. In and near salt water at Cor- 

 pus Christi Bay, Texas (343), with the leaves sublyrate-pinnatifid. 



CEnothera macrosceles, Gray. At Parras, Coahuila (338). 

 Fruiting specimens, at length collected, determine the position of this 

 species in the Onagra group, where it was originally placed. The 

 capsules are about an inch long, straight or somewhat curved, obtusely 

 tetragonal, 1^ lines in thickness, the seeds nearly smooth or obsoletely 

 pitted. 



CEnothera sinuata, Michx. Around San Rafael (172 Schaff- 

 ner); 253 Parry & Palmer. Also the var. hirsuta, Torr. & Gray, 

 at Corpus Christi Bay, Texas (345). 



Oenothera speoiosa, Nutt. In the mountains east of Saltillo 

 (339) and in the Caracol Mountains, Coahuila (336), and near Mon- 

 terey, Nuevo Leon (335, mainly) ; 252 Parry «fe Palmer, ffi". hirsuta 

 and CE. Berlmidieri, Walp., {Xylopleurum, Spach), are mere forms of 

 this species. 



QiiNOTHERA tetraptera, Cav, A variety with small flowers, the 

 calyx-tube 3 to 6 lines long, and the fruit 6 to 8 lines long including 

 the short pedicel, from Monterey, Nuevo Leon (347). 250 Parry 

 & Palmer is the same in part, there being with it a somewhat more 

 villous form with larger flowers, the calyx-tube an inch long, and the 

 fruit (5 lines long) sessile or nearly so (169 Schaffner, San Luis 

 Potosi). With 335 Palmer, in the Gray herbarium, is a low form 

 villous throughout with spreading hairs, even to the calyx-lobes, with 

 larger flowers, the pedicel short and calyx-tul)e 6 lines long. A 

 doubtful form was collected in the Sierra Madre south of Saltillo 

 (340), with large flowers, the calyx-tube an inch long, and the pedi- 

 celled fruit about an inch long and attenuate at top. It is difficult to 

 define the limits of this and the preceding species, or to draw a clear 



