322 PROCEEDINGS OF THE AMERICAN ACADEMY 



pubescence, and sometimes sparingly villous : flowers bright yellow by 

 day, becoming brownish purple at night : ovary pubescent and more 

 or less villous ; pod round-obovate (2h to 4 lines broad), sometimes 

 shortly stipitate. — At Monterey, Nuevo Leon (3o). The pod of 

 S. Berlandieri is always sessile, and rounded or almost emarginate at 

 base. 



Synthlipsis Greggii, Gray. At Parras (45) ; 18 Parry & 

 Palmer. 149 Schaffner, from the San Miguelito Mountains, has 

 usually shorter pods, sometimes scarcely longer than broad. Dr. 

 Gregg's original specimens include the same form. 



Capsella pubens, Benth. & Hook. At Parras, Coahuila (39). 



Capsella Mexicana, Hemsl. In swampy places near Morales 

 (147 Schaffner) ; 19 Parry & Palmer. 



Capsella (?) ScnAFFNERi. Annual, glabrous or nearly so, erect 

 and somewhat branched mostly from near the base, 4 to 8 inches high, 

 the stem and branches angled and the angles usually slightly pubes- 

 cent : cauline leaves linear-oblanceolate, obtuse or truncate or retuse, 

 sessile, 4 to 6 lines long, entire or with a few short blunt teeth: 

 flowers white, the petals 2 lines long : fruiting pedicels ascending, 

 1-2^ lines long : pod shortly stipitate, oblong-lanceolate, somewhat 

 obcompressed, the valves strongly convex, more or less evidently 

 nerved and carinate, 1\ or 2 lines long and beaked by a slender 

 style \ line long: seeds 4 or 5 in each cell; cotyledons probably 

 accumbent. — San Miguelito Mountains (151 Schaffner). A plant 

 of very uncertain affinities, and perhaps belonging among the Sisym- 

 briece near Smeloivshia. The pod varies much, but is decidedly ob- 

 compressed when well developed, especially toward the base. In 

 the present uncertain limits of Capsella the species may as safely be 

 placed here provisionally as elsewhere. 



Lepidium LASiocARPUir, Nutt. (Z. Wrightii, Gray.) Low (6 

 inches high or less), pubescent throughout with short spreading hairs, 

 the straight pedicels shorter than the pod, stout and much flattened. — 

 Var. tenuipes. Usually taller, more slender, and less jnibescent, the 

 pod glabrous : pedicels narrower and more slender, as long as or usu- 

 ally exceeding the pod. At Parras (41), and San Luis Potosi (145 

 Schaffner). The same as 21 and 22 Parry & Palmer (referred to 

 L. Menziesii), and 686 Coulter and 14 Bourgeau, in part (named L. 

 Virginicum), and of frequent occurrence through the interior north- 

 ward to Nevada and Southern Colorado. It has the habit of L. 

 intermedhan, Gray (23 Parry & Palmer), with which it has been 

 confounded, but is readily distinguished by the flattened pedicel. It 



