30 



7. Castalia flava Gieeuc {Nynqyhwa jlava Lt;itner). Rio Grande City (Starr 



county). To tliiH must bo referred Bourgcau 4, from Santa Anita, Mexico, as 

 noted under the preceding Hpecies. The discovery of this Florida yellow- 

 water-lily aloug the Kio Grande in Texas, as well as in Mexico, is un inter- 

 esting one. In Pringlc's distribution of 1888, no. VM), from lagoons near 

 Brownsville, is labeled Nijmpltwa Mexicaiia Zucc, and it is undoubtedly the 

 same an onr specimens from Mr. Nealley. Tliore seoms to be so unich uncer- • 

 tainty, lu)wevcr, as to what X. Mcxtcana in, and onr plants so closely accord 

 with the well-known Caslalia Jlava, that we have ventured to so name them. 

 It is but fair to say that none of the Nealley specimens are in fiiiit, and it 

 may be discovereil that all of these Texano-Mexican yellow water-lilies 

 arc! Castalia Mexkana. 



8. Nelumbo lutea Pois. {Nelumlium luteum Willd.) Along the lower Kio Grande, 



near Santa Maria (Cameron county). 



9. Argemone platyceras Link & Otto, var. rosea Coulter h. var. Petals bright 



rose-i)urple. Corpus Christi. This includes also the form referred to by 

 Watson t/Voc. Jin. Acad., xvii. :{18) under Palmer 20. 



10. Thelypodium liuearifolium Watson. Limpia canon (Presidio county). 



11. Thelypodmm micraiitlnim Watson. Limpia canon and Chenate Mountains 



(PresiiUo county). Mr. Nealley's plants are quite small and sometimes 

 simple, son»5 of them being not more than 1.) inches or 1 foot high. They are 

 sometimes also (luite glabrous, even as to the lower leaves, and the stignui 

 seems sessile. This species is confused in herbaria with 7'. loiujifoUmn Wat- 

 son, in which the llowersare twice as large. 



12. Thelypodium Vaseyi Coulter, i\. up. Glaucous and glabrous throughout, (5 to 



gdm iijoii braiudiiug, with coarse stems : leaves thin, oblanceolate, becoming 

 narrower above, entire or lower leaves somewhat repaud-denti(;nlate, clasp- 

 ing by rounded auricles (or the lowest merely sessile), 2.5 to 10'"' long, 

 1.25 to li-TS-:'" broad: llowers very small, white, about :$""" high : pods very 

 slender-, becoming distant and ascending or erect, :},75 to 5'"' long, on pedi- 

 cels to «""" long.— Near Rio Grande City, Texas {Nealky); also collected 

 in 1831 by G. R. Vasey (no. 29) in the mountains west of Las Vegas, New 

 Mexico, in immature condition. Vasey's plants were too young to be char- 

 acterized, although Mr. Watson, to whom the specimens were submitted, 

 considered them as probably representi ng a new species. Mr. Nealley's speci- 

 mens supply nearly mature pods, which may become longer than noted in 

 the description. The species seems to be very distinct from any other Thely- 

 podium. 



13. Thelypodium Wrightii Gray. Limpia canon (Presidio county). Specimen.s 



in fine fruiting condition show pods mostly :5 inches long or over. 



14. Lesquerella argyrea Watson ( VeHicaria anjyrea Gray). Roma (Starr county) 



and Chenate Mountains (Presidio county). 



15. Lesquerella Engelmamii Watson ( Vesicaria Eu<jelmaiivi Gray). Camp Char- 



lotte (Ixion county). The collection includes two forms: oiw leafy, with 

 very narrow and c^ntire loaves; the other with nearly all the leaves rather 

 broad and sinuate-dentate. 



16. Lesquerella gracilis Watson ( VcHicaria gracilis Hook.). lirazos Santiago. 



17. Sisymbrium canescens Nutt. Limpia canon (Presidio county). 



is' Sisymbrium diffusmn Gray. Limpia canon (Presidio county) and Chisos 

 Mountains (l'\>ley county). This species was collected by Wright and the 

 Mexican Boundary Survey in the southwest corner of Texas. G. R. Vasey 

 and Rushy have collected it in adjoining New Mexico, and Pritigle in Mexico. 

 Mr. Nealley's Limi)ia canon specimens were collected at Wright's original 



station. 

 19. Erysimum asperum DC. Limpia canon (Presidio county). 



