BOTANY. 



73 



COMPOSITAE, (by A. Gray.) 



Vernoota JamesiIj Torr. & Gray, Fl. 2, p. 58 ; Gray, pi. Wright^ 1, p. 82, dc 2, p. 69 ; di in 

 Bot, Whipp. Rep. R. R. Surv. p. 95. Common in western Texas. 



Yernonia Lindhbimeri, Gray <& Engelm., Fl. Lindh. 2, p. 217. Southern Texas. 



, » 



Pectis angustifolia, Torr. in Ann, Lyc.\ Gray^ PL Wright ^ I. c, etc. Pectidopsis angustifolia, 

 DC. Dry hills, western Texas to the Copper Mines, Xew Mexico, etc., and south to the Rio 

 Grande. According to Mr. Thurberj the fresh plant exhales the odor of lemon balm. 



Pectis filipes^ Harv, d Gray^ in PI. Fendh p. 62 ; Gray^ PL Wright^ 2, p. 69. Gathered 

 by all the collectors ; apparently common from the Rio Grande to Chihuahua and western 

 Sonora. 



Pectis papposa, Ilarv. & Gray^ L c. This has now been traced nearly across the continent, 



from Presidio del Norte (Bigelow^ Parry ^ etc.) to the Gila and Cocospera, (Schoity Tliurher^ etc.) 

 Peciis longipes, Gray^ PL Wright^ 2,^. 70, Santa Craz, Sonora, and vicinity ; found by all 



the collectors. Berlandier collected it in Nuevo Leon ; it is No. 3159 of my dislribution of his 

 reliquicB, 



Pectis imbeebis, Gray^ L c. Besides Wright's specimens, gathered on the Sonoita, Sonora, 

 from which this remarkable species was characterized, it was also found at Janos, Chihuahua, 

 and elsewhere by Schott. 



Pectis prostrata, Cav.; Gray, PL Wrightj 1, p. 83. New Mexico and Sonora; Wright, 

 Thurher. 



Pectis ienella, DC. Prodr. 5, p. 99, Rio Coleto, Texas, Thurher. It was gathered by 

 Berlandier at Laredo, and between the Rio Grande and the Nueces, and is No. 599, 985, 2009, 

 and 2415 of the American distribution.'*' 



Isocarpha oppositifolta, R. Br.; DO. Prodr. 5,^. 107. On the lower Rio Grande; Schoity 

 etc. A congener of Dunantia, DO.^ as Mr. Bentham has shown, (in Bot. Voy. Sulphur.) He 

 has indicated the practical difficulties in the nomenclature of the two genera. 



Trichocoroxis rivularis, Grayy PL FendL p. 56. Piedra Pinta Creek, Texas. Wright^ Parry. 



Steyia canescexs, Benth. PL Harfw. p. 19 (an H. B. Kf) Gray^ PL Wright ^ 2^jp. 71. A 

 smoothish form, gathered both in New Mexico and Santa Cruz^ Sonora, by Wright (& Thurher. 



Stevia salicifolia, Cav. Ic. t. 354.; Lower Rio Grande ; Parry. Pappus either 1-2-aristate, or 

 else short and awnlesSj where it apparently passes into S. angustifolia, H. B. K. 



Stevia micraxtha, Lag. Nov. Gen. d:Sp. j)- 27. S. macella, Gi^ay^ PL Wright^ 2, p. 70. Cobre 

 (Copper Mines,) New 3Iexico; Wright. This being the same as a plant collected by Schaffner 

 on Chepultepec, and kindly communicated to me by Dr. Schultz, the distinguished investigator 



mic 



11 



the specimens do not altogether accord with Lagasca's brief character. f 



*Pectis Berlandieri, PC. /. c. (between Tantoyuca and Tampico, 732, 2152; San Fernando, Cohahuila, 1537, 3037, 

 Berlandier,) has not yet been re-discovered. The setae of the pappus, both of the disk and ray, vary from three to six. 



f In the portion of the collections of Berlandier, until now undistributed, occurs the following : 



Stevia Berlan'dieri (sp. nov.): fruticosa, fere glabra; foliis oppositis ovatis obovatisve obtusis in petiolam longum contractis 



basi triplinerviis crenato-subserratis crassiuscuiis, sumrnis parvis spathulatis inteo;errimis ; corymbo polycephalo pedunculato; 



capitulis brevissime pedicellatis capitato-congestis ; involucri squamia atorniferis subacutia ; acheniis gUberriinis ; pappo 



cxaristato e squamis truncatis laceris coroniforrai-subconcretis. 



In the mountains near San Carlos, Tamaulipas; Berlandier, No. 3160- Mountains near Saltillo; Gregg, No, 224. SuflFruticose, 



a foot or Iwo high, leaves half an inch to an inch long, with a petiole of 1| — 6 lines in length, smooth and glabrous, nearly 



veinless except the triple ribs at the base. Heads 3| or 4 lines long, including the flesh-colored or whitish corolla. 



10 k 



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