V. PLANTjE "WRIGHTIAN.E. 13 



Gen. III. 1. p. 218, t. 96, c^- PI. Lindh. 2. p. 187. Valley of the Rio Grande, sixty 

 or seventy miles below El Paso ; Sept. 



CAEYOPHYLLACEtE. 



25. LcEFLiNGiA SQUARRosA, Nutt. ill Toir. Sj- Gray, Fl. 1. p. 174; Hook. Ic. PI. 

 t. 285 ; Gray, Gen. III. 2. t. 106. Sandy road-sides, Austin, Texas ; May. 



26. Paronychia Lindheimeri, Engelm. in PI. Lindh. 2. p. 152. Mountains be- 

 tween the Limpia or Wild Rose Creek and the Rio Grande ; Aug. — The specimens 

 well accord with Lindheimer's and with Wright's Texan specimens. 



27. P. Jamesii, Torr. 8r Gray, Fl. 1. jj. 170; Gray, PI. Fendl. p. 14. Hills of 

 the San Pedro River ; July. — Resembles the larger form among Fendler's speci- 

 mens, No. 69 ; but with the calyx rather more hairy : in both, the sepals are tipped 

 with a cusp or awn as long as that of P. dichotoma. 



28. P. Jamesii, var. canescenti-puberula, cymis confertis multifloris. — Crevices 

 of rocks on a creek beyond the Pecos, growing in strong tufts ; Aug. 



PORTULACACE^. 



29. Sesuvium Portulaccastrum, Linn. Sp. ed. 2. p. 684; DC. Prodr. 3. j?. 453: 

 var. floribus subsessilibus. (S. sessile, Pers. ; DC. PI. Grass, t. d.) Low bottoms 

 of the Rio Grande below El Paso ; Sept. — The specimens, as well as those gath- 

 ered by Gregg and Wislizenus in Northern Mexico, all belong to the form with 

 subsessile flowers.* 



30. "PoRTULACA retusa, Engelm. PI. Lindh. 2. p. 154. Valley of the Rio 

 Grande below El Paso, in sandy soil. The long style and the broadly winged se- 

 pals are decisive as to the identity of this species. The seeds are of the same size 

 and roughness as those of Lindheimer's specimens, but opaque and black, not gray- 

 ish. The only specimen before me is a small erect plant, without any flowers. [In 

 Mr. Wright's notes the flowers are said to be " yellow and minute."] — To the char- 

 acter of the Spathulatce in PI. Lindh. I. c. add : Operculo capsulce acuta sub apice 

 constricto semina unum plurave includente. I had overlooked this remarkable fact ; 

 but it constantly occurs in all the species of this section, both European and Ameri- 

 can." Engelmann. 



31. 32. "P. pilosa, Linn. W. Texas to New Mexico. I have before me speci- 

 mens from six diff'erent localities, from the Brazos westward, collected by Lindheimer 

 and Wright, difi'ering from one another in the size and appearance of the seeds, and 

 in the shape of the capsule ; but these differences vary so much, that even varieties 

 can hardly be characterized. In some the capsule is small with a long stipe, the 

 operculum conic, the seeds very minute, and more or less shining with metallic lus- 

 tre. In others the capsule is more than twice as large, the operculum semiglobose, 

 the stipe very short, and the much larger seeds black and opaque." Engelmann. 



* Sesuvium pentandrum, Ell. Sk. 1. p. 556 (figured in Gen. Elustr. t. 100), has been republished un- 

 der the same name by Fenzl, in Ann. Wien. Mus. 2. p. 347, from Drummond's New Orleans specimens. 

 VOL. III. AKT. 5. — 3. 



