OF ARTS AND SCIENCES. 319 



BoccoNiA FRUTESCENS, Linn. At Guajuco, Nuevo Leon (23). 



HuNNEMANNiA FUMARi/EFOLiA, Swect. At Monterey, Nuevo 

 Leon (22) ; 1031 Parry & Palmer. 



FuMARiA PARVIFLORA, Lam. At Saltillo (24) ; 9 Parry & 

 Palmer. 



Nasturtium tanacetifolium, Hook. & Arn. At San Lorenzo 

 rie Laguiia, Coahuila (34), and near Corpus Cbristi Bay, Texas (35); 

 San Luis Potosi (148 Schaffner) ; 11 Parry & Palmer. 



Arabis runcixata. Biennial, hirsute with simple spreading 

 hairs, low and branching : leaves runcinately lyrate, petiolate, the 

 lobes acute and acutely toothed ; lower leaves 4 inches long : flowers 

 small (1| lines long), on hispid petioles, the calyx glabrous: pods 

 ascending, an inch long by a line wide, beaked by the long style, few- 

 (about 10-) seeded : seeds elliptical, winged. — In shaded places about 

 San Luis Potosi (155 Schaffner). Allied to A. petiolaris, Gray. 



Arabis Mexicana. Very slender, glabrous, decumbent : leaves 

 lyrately pinnatifid, the few lateral lobes narrow, distant, mostly 

 entire, the terminal one 2- or 3-toothed or - lobed : racemes elongated 

 in fruit, the flowers very small (a line long), white, on slender spread- 

 ing pedicels a line or two long : pods ascending, 5 to 8 lines long by 

 half a line broad, abruptly beaked by a rather conspicuous style, the 

 valves reticulately veined, obscurely 1 -nerved toward the base : seeds 

 in one row, round, narrowly wing-margined. — Near Guanajuato 

 (Duges), where it is popularly known as " Lantejuelilla," and consid- 

 ered injurious to cattle eating it. 



Cardamine auriculata. Annual, erect or ascending, slender, 

 branching, a span high, very sparingly hispid : leaflets three {lairs, 

 petiolulate, ovate or the terminal one oblong-ovate, crenate, about 

 half an inch long or less, often with a small subsidiary auricle or 

 stipule-like leaflet on the lower side at the point of union with the 

 rhachis of the leaf : flowers white, 2 lines long : pods an inch long by 

 half a line broad, ascending on pedicels about 3 lines long, and attenu- 

 ate above into a long slender style. — At Guajuco, Nuevo Leon (49). 

 Most resembling C. impatiens. The Cardamine Schnffneri, Hook. f. 

 in Hemsl. Diag. PI. Nov. 1 . 2, is the same as C. Gambelii, Watson. 



Vesicaria purpurea, Gray. Caracol Mountains, Coahuila (29). 

 Flowers white, becoming pink. A low doubtful form, with yellow 

 flowers, was found in the Sierra Madre, Coahuila (28), and at Mont- 

 erey, Nuevo Leon (32). 



Vesicaria argyrea, Gray. In the Sierra Madre, Coahuila (30) ; 

 a slender form with narrow leaves, and a taller and stouter form with 



