1 



•< 



, f 



T. 



J^' 



w 



I 



•V 1 



10 



PLA2s'T^ WRIGHTIAN^. 



'' f * 



1, 



U^ i 



•-- 



/ 



stout and 

 upper 



and Ibaded witli pods 



All the lower lea\ 



ha\ 



fallen 



th 



half 



inch 



more in length. Silicles 



three lines long, a little 



shortcr than the pedicels, oval, inflated, moderately compressed 



ary 



to the 



partition, 

 emarginate, tipjped 



keeled, ol 



cinerous, like the pedicels, &c., with a close stellular pubescen 



short but distinct style; the boat-shaped val\' 



not 



rely 1-nerved; the septum Hnear-oblong. Seeds very 



bent cotyled 



enumeratcd by Nuttall, but 



cell, oblons-oval, marginless, compressed contrary to the mcum- 



of the species of Hymenolobus 



acters accord 



A much stouter plant 



ipt in the distinct style, the ch 



ith those of that genus, and with no other known to me 



13. DiTHYREA WisLizENi, Enqel 



Wisliz. Mem. N. Mex., f.ll. Iberis 



sp. 1 Torr. in Ann. Lyc. Nat. Hist. New York, 2. p. 166. Valley of the Rio Grande 



enty miles below El Paso ; Sept. (in flower and with 



fruit) 



A 



g plant, apparently common 

 iaracterized by Dr. Engelmai 



the valley of the Rio Grande del Norte, and 



P 



14. Vesicaria Engelmannii, Grai/, Gen. III. 1. p. 162, t. 70 



Banks of the Eio Blanco, Western Texas ; May. 



Pl Lindh. 2 



144. 



15. V. ARGYR^A, Gray, Pl. Lindh. 2. p. 146 

 of the Leona, and prairies of Live Oak Creek ; June 



foliis minus arg 



Hills 



15 



a 



V 



Graj/, Pl. Lindh. 2. p. 145. Near Austin, Texas; May 



16. V 



Gray, Pl. Lindh 



the Rio Erio, Western Texas ; June. Calcar 



p. 149, in not. Gravelly bars of 



Rio San Fclipe, and 



hiUs of 



of the San 



July 



Mountain valleys beyond the Limi: 



pass 



Aug 



Also 



gathered, the previous year, on the Texan 



of the Rio Grande, near Presidio 



The coUection embraces various forms of the species 

 leaves are rather broadly spatulate. 



In some of them the radical 



17. Lepidium alyssoi 

 Mountain valleys farther 



Gray, Pl. Fendl.,p. 10. Valley of 



Pecos 



Aug 



the Rio Grande, and in the valley of that river 



sixty 



ty miles below El Paso ; Sept 



flower and fruit. — Cotylcdons 



cumbent. — Dr. Gregg gathered the same species near Buena Vista, and 



the 



valley of Conchos, below St. Rosalia. 

 18. L. soRDiDUM (sp. nov.): humile 



caulibus diffusis 



basi ramosis 



I- n 



simis ramulisqiie 

 spathulatis inciso 



granuloso 



foliis (imis ignotis) caulinis par 



•pinnatifidis glabris ; racemis multis, fructiferis elongatis densis 





i 



floribus minimis fere apetalis tetrandris ; siliculis ovatis 



.pteris glabris 



pedicellis erectiusculis confertis sequilongis ; cotyledonibus incumbentibus 

 mountain valleys east of the Eio 



Li 



Grande del Norte 



Aug 



A depressed, insig- 



nificant species ; the specimens loaded with fruiting racemes, on which the pcdiccls 

 are densely crowded. Silicles barely half as large as those of L. Virgiincum. 



CAPPAEIDACE^. 



19. PoLA^isiA uNiGLANDULosA, DC. Prodv. 1. p. 242. 



Cleome uniglandulosa 



Cav. Ic. 4. t. 306. 



Hills near El Paso, and on the San Pedro; Aug. 



Sept. 



The specimcns havc more or less stipitate pods, as has the similar plant in Coulter's 



