Plantce Lindhcimeriance. 191 



dentatis, inferioribus oblongo-lanceolatis petiolatis ; floribus 

 4-meris 8-andris ; bracteis oblongis ovario longioribus e basi 

 brevi persistente caducis ; rachi ideoque squarroso-dentata ; 

 tubo calycis ovario longioribus segmentis brevioribus ; nuce 

 sessili alato-tetraquetra ovato-pyramidata glabra, faciebus con- 

 cavis unicostatis laevigatis aut basi parce subtuberculatis. — 

 Cedar woods, in sandy and rocky soil, New Braunfels. May, 

 June, in flower and fruit. — Plant, with much the aspect of 

 G. Drummondii ; but the leaves smoother, less toothed, and 

 " longer petioled than any other ; " the stem villous or hirsute 

 below with long spreading hairs, while the rachis, calyx, 

 bracts, &c. are perfectly glabrous. The petals appear to be 

 paler than those of G. Drummondii, and the fruits are closely 

 sessile, without any narrowed base or stipe. It is much 

 more closely related to the Gaura tripetala, Cav. ; judging 

 from Spach's description, and from Texan specimens with 

 triquetrous fruit and trimerous flowers, gathered by Mr. 

 Wright, which agree well with the character. 1 



f Myriophyllum heterophyllum, Michx. With the next. 



f Proserpinaca pectinacea, Lam. On the Pierdenales. 



LOASACE.E. 



396. Mentzelia oligosperma, Nutt. ; Torr. &f Gray, Fl. 

 1. p. 533. Thickets, on high, rocky plains of the Upper 

 Guadaloupe. August. 



f Mentzelia (Bartonia) ntjda, Torr. &f Gray, Fl. 1. p. 

 535 ; Gray, PL Fendl. p. 47. Springs of the Cibolo, Gua- 

 daloupe, and Pierdenales, in rocky soil. July, October. 

 " Stems three to five feet high : petals expanded in the even- 

 ing, not in the morning." 



f EUCNIDE BARTONIOIDES, ZuCC. PI. Hort. Bot. MoflOC. 



fasc. 5, in Abhandl. Baier. Akad. Wissensch. 4. t. 1. Mi- 



1 Gaura hirsuta, Scheele, in Linncea, 21. p. 580, described from specimens gathered 

 by Romer between Bastrop and Austin, does not accord with the present species, 

 but is likely to be either G. Lindheimeri or G. biennis. G. Rosmerianaof the same 

 author, from New Braunfels, described without the fruit, may be safely referred to 

 G. Drummondii. 



