BOT>" 



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Streptanthus longifolius, Beiith. PL Hariw. p. 10 ; Gray^ PL Wright ^ ^, ^ l.ocky liills, 



western Texas, Near the Rio Grande, July ; Bigelow. 



Stkeptanthus glaxdulosus, HooJc. Ic. L 40; Tcnx. d Gray, FL l^p. 17. Napa couDty, Cali- 

 fornia ; Thurher. 



SIREPTA^'THU3 AKCUATUs, Nutt. in Tort. dc Gray, FL L c. Bocks on the seacoast, near Sao 

 Francisco, California; April; Thurber. 



Nasturtium palustrb, DC; Gray, PL Wright, 2, p, 10. Moist places, western New Mexico, 

 Texas, and Chihuahua ; April ; Bigelow, Ihurher. Variable in the length of the pods. 



Nasturtium obtusum, NulL L c. Wet sandy places on the Rio Grande, from New Mexico to 

 Eagle Pass ; Bigelow, Thiirher. Specimens from the lower Rio Grande have the pods nearly 

 three-fourths of an inch long. 



Nasturtium sessiliflokum, Nutt, L c. Brady's creek, Texas ; Thurher. 



Nasturtium curvisiliqua, Nutt. L c. Napa county, California; Thurher. 



Barbarea vulgari>:, Pr, Br. var. pedicellis angulo recto putulis, BenfJi, PL ITartio. p. 297* 

 On the Rio Mimbres, New Mexico ; Bigelow. This resembles the California plant in the style. 



TiiELYPODiUM WRiGHTir, Gi^ay, PL Wright, 1, p. 3. Plains and low grassy places, Leon 

 Springs, and along the Rio Grande, from forty miles below San Elceario to Eagle Pass; April 



Sept, ; Bigelow, Scliott. 



Nutt. in Torr. &Grav, FL 1, p, 85. On the Rio Grande, from 



downward ; also, in New Mexico ; Febr. — May. Leaves often coarsely dissected. 



Sisymbrium diffusum, Gray, PL WrigJd, l,p. 8. Rocks near the Limpia, Texas; hills near 

 the Copper Mines ; and rocky places, Puerte de Paysano ; July — Sept, ; Bigelow. 



Ery>imum asperum, DG. ; Torr. d: Gray, FL 1. p. 95 ; Torr. Bot. Wltipple, Ilep. p. G6. Western 



■ 



Texas, Chihuahua, Sonora, and California. An extremely variable plant, which maybe referred 

 to several nominal species. 



Greggia camporum. Gray, PL Wright, 1, p. 9, 1. 1. Hills and prairies, on the Pecos and upper 

 'Rio Grande ; also, in Chihuahua and Coahuila. The cauline leaves vary from entire to repandly 

 toothed, 



Draba mcraxihAj Nutt. in Torr. & Gray, FL 1, p. 109. El Paso, and near the Copper Mines, 

 March — April ; Bigdcio, Thurher. Guadaloupe Pass and Santa Cruz, Sonora ; Parry. 



Vesicauia DEXsirLORA_, 6Vay, PI. Lindh. 2, p. 145. Eagle Pass, and other places on the lower 



Rio Grande ; March ; Schott. 



Vesicaria argyrea, Gray, I. c. Near Corallitus, Chihuahua ; Thurher. 



Vesicaria stenophylla, Gray, I. c. dc PI. Wright, 2, p. 13. Hueco mountains, Texas ; Thurher. 



El Paso and Mule Springs ; March — April ; Bigeloiv. All the forms described by Gray occur in 

 the collections. 



Vesicaria recurvata, Engelm. in Gray, I. c. & PI. Wright, I. c. Banks of the Leon, Texas, 

 April ; Thurher. Tucson, and on the Gila, Sonora ; March ; Parry. 



Yesicaria purpurea, Gray, PI. Wright, 2, p. \i. Hueco mountains, in rocky places, El Paso 

 and Cook's Springs ; March— April ; Bigelmo, Thurher. Guadaloupe Pass, &c., Sonora; March ; 



Parry. The petals are only slightly purple, often almost white, and yellowish toward the 

 claw. 



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