226 Plantce Lindheimeriana. 



conspersis. Flores aurei. — Genus eximium, Berlandkrae et 

 Enoelmanniee cognatum, diximus in honorem ejus acerrimi 

 inventoris, qui floram Texanam largiter indagavit. 



424. L. Texana, Gray &f Engelm. in Proceed. Amer. 

 Acad. 1. p. 47. In thickets and rocky Cedar woods, New 

 Braunfels; also Comanche Spring, he. (633). Also gathered 

 in Western Texas by Mr. Wright. This has been cultivated 

 now for two seasons in the Cambridge Botanic Garden as 

 an annual : it copiously produces its neat flowers through the 

 summer, and until killed by autumnal frosts. 



f Silphium laciniatum, Linn. Prairies and open woods, 

 New Braunfels. July. 



425. Engelmannia pinnatifida, Torr. fy Gray, Fl. 2. p. 

 283. E. Texana, Scheele in Linnaa, 22. p. 155. Upper 

 Guadaloupe, on rocky hillsides, and in dry and hard prairie 

 soil. April. 



(639.) E. pinnatifida ; var. foliis majoribus submembran- 

 aceis. Comanche Spring, and New Braunfels. 



426. Parthenium Hysterophorus, Linn. ; Torr. &f Gray, 

 Fl. 2. p. 248. Muskit Flats, near San Antonio, and in the 

 streets of that town. April to October. 



427. Iva axgustifolia, JSutt. in DC. Prodr. 5. p. 529; 

 Torr. fy Gray, Fl. 2. p. 279. Comanche Spring, &c, in 

 rocky, moist soil, and in the dry bed of streams, in large 

 masses. " Used in brewing beer, in place of hops." 



428. Ambrosia aptera, DC. Prodr. 5. p. 527. A. trifida 

 /?. Texana, Scheele in Linncea, 22. p. 156. Low grounds, 

 New Braunfels. August. Closely allied to A. trifida, 

 but readily distinguished by the marginless petioles, terete 

 stems, and the quite different fruit. The fruit is much 

 smaller, generally 8-rrbbed, and merely 4 - 6-tuberculate. 



429. A. coronopifolia, Torr. &/■ Gray, Fl. 2. p. 291 ; 

 var. asperula, capitulis minoribus, fructibus interdum 6-tu- 

 berculatis. A. Lindheimeriana, Scheele in LinncEa, 22. p. 

 156. Moist prairies, near New Braunfels. August. 



