S- 



t. 



120 



PLANT^ WRIGHTIANiE. 



V. 



rulis. 

 Sept. 



Rocky banks of the San Pedro River, and mountains east of El Paso ; July- 

 Stems one or two fcct h\"h. from a woody base, rigid, loosely corymbose at 



tlie summit. T.eaves thickish, 12 to 18 lines long, those of the flowering branches 

 small and sparse. Heads barely half au inch long. Involucre not glaucous, nor 

 colored exccpt with one or two purplish glandular lines or spots. Pappus yellow- 

 ish, exsertcd to twice the length of the involucre. The corollas appear to be yellow. 

 370. P. GiiEUGii (sp. nov.): cauHbus e basi suffruticosa adscendentibus rigidis; 

 foliis coriaceis anguste lincaribus mucronatis parce glandulosis ; involucri cam- 

 panulati squamis 5-7 oblongis obtusis vel acutiusculis planis viridulis glandulis ob- 

 longis notatis; acheniis crostratis pubescentibus. — Hills in the Pass of the Limpia; 

 Aug. (Also Valley of Parras, Cohahuila, Dr. Gregg.) — Stems 8 to 12 inches high, 

 simple or branched. Leaves one or two inches long, a line or less in width, often 

 curved, risrid, more or less glandular. Heads two thirds of an inch long. Scales 



of the involucre five or six lincs long, rather broad and flat, chartaceous, in 

 Wrighfs specimens only five in number, while in Gregg's there are seven. 



flowers in both are yellow. 

 fulvous pappus. 



The 



Achenia three lines long, rather shorter than the 



« 



371. Agassizia suavis, Gray §* Engelm. Proceed. Amer. Acad. 1. p. 50, §* Pl. 

 IJndli. 2. p. 229. Gaillardia simplex, Scheele in Linncea, 22. p. 160. Rocky hills, 

 Austin, Texas ; May. — This is now in cultivation in the Cambridge Botanic Gar- 

 dcn. The flowers exhale a fragrance much like that of the Heliotrope. 



372. Gaillardia pinnatifida, Torr. in Ann. Lyc. N. Y. 2. p. 214; Gray, Pl. 

 FendL p. 95. Valley of the Pecos, Limpia, and Rio Grande, New Mexico ; Aug. 



373. G. PULCHELLA, Foug. ; Torr. ^ Gray, Fl. 2. p. 366. Prairies, near Austin, 

 Texas; May. — This is the same as Lindheimer's No. 103 of the second distribu- 



• ^*^ 



tion, enumerated in PL Lindh. 2. j). 230, and there wrongly referred to G. picta. 



374. G. PULCHELLA, var. capitulis minoribus. Hills of the Rio Frio ; June. Dr. 

 Gregg found this to extend as far into Mexico as Reynosa and Monterey ; and he 

 also gathered what I take to be G. lanceolata at Saltillo. 



375. Palapoxia Hookertana, /9. subradiata, Torr. ^ Gray, FL 2. p. 368. Val- 

 ley of the Rio Grande, 60 or 70 miles below El Paso ; Sept. 



P. Texana, DC. Prodr. 5. p. 125; Torr. ^ Gray, l c. From Austin to the 



- Aug. — The pappus varies much in size, and is either 



Rio Grandc, Texas ; May 

 acute or obtuse.-j- 



The Mexlcan species greatly need revlsion. Thc subjoincd is a well-marked new species, with the 

 heads resembling those of P. Greggii. 



PoROPHYLLCM AMPLExiCAULE {EngeJm. ined.) : glaucum; caulibus basi fruticosis teretibus erectls ; 

 fohis orato-lanceolatis acutis semiamplexicaulibus carnosis eglandulosis siccate nervulosis, caulinis plerisque 

 opposUis ; mvolucn campanulati squamis circiter 8 oblongis acutlusculis subplanis viridulis parce lineato- 



glantlulosis ; floribus flavis ; acheniis minute hirtulis. 



Near Messillas, CohahuIIa, Mexlco, Gregg. 



Stems two feet hlgh. Leaves an inch or more In lenglh, four lines wide at the base, thence tapering to 

 an acute pomt. Heads three quarters of an Inch long ; the pappus tawny. 



t Palafoxia Lindenii (sp. nov.) : tenuiter cinereo-puberuk ; ramis floriferis glandulosis ; folils ob- 

 longo-lanceolatis obtusis s^pe mucronulatis in petiolum attenuatls, inferiorlbus subtrinervatls ; capltulls 



- i 



jj**™ 



