l 



f 



l 



I 



I 



l 



r-l 



I 





V. 



PLANT^ WRIGHTIAN^. 



121 



3 



Florestina TRiPTERis, DC, var. pappi paleis brevioribus obtusissim 



Aug 



basi callosa in nervum vix vel haud producta 



Flowers purpl 



Prairies beyond thc Pccos 



Berlandier's plant ; by no means 



The pappus is composed of shorter and round 



and with a thickish mid 



I find 



described by De Candolle. In comparing it with B 



while some flowers of the latter have oblong and acutish palefe, vvith a s'tr'ong mid 



nerve, others have them obovate and obtuse, with the nerve vanishin- abovc the 



middle ; and there is no diiFerence in other respects 

 as it does in Palafoxia Texana and P. callosa. 



The pappus doubtless 



377. Palafoxia (Florestinaria) callosa, Torr, 8f Graj/, FL 2. 369. Florestina 



DC. 



t P 



Cliffs of Turkey Cree"k, and on the Eio Grande 



mmimo 



pi 



Austin, Texas 



achenia are pubescent in the plant with a vefy short pappus, as in the ordinar\ 



The 



of 



species. Theyare glab 



m a 



ety which is destitute of papp 



3 



m specimens raised in the Cambridge Botanic Garden 



"8. Hymenopappus flavescens, Gra^, Pl Fendl p. 97. Valley of the Rio 

 Grande, fifty miles below El Paso ; Sept. Also in the collection of 1851. — The 

 lobes of the leaves are finer than in Fendler's No. 464, but much as in his No. 463; 

 aud even the rameal leaves are pinnately parted. 



230 



H. CORYMBOSUS, Nutt 



Austin, Texas. 



Torr. 8r Gray, Fl 2. p. 3 



Gray, Fl. Lindh. 2. p 



379 



Bahia absinthifolia, BentJi. Pl Harfw. p. 18; var. dealbata : pappi paleis 

 paullo brevioribus et latioribus ; foliis nunc integerrimis oblongis seu lanceolatis, 



ilobatis lob 



bus 



6 



prsesertim superior 



tripartitis 



mm 



saepe 2-3-lobato 



dealbata, Gray, Pl. Fendl. p 



adnot 



Calcareous hills of the San Fehpe and the Pecos, and valley of the Eio Grande be 



low El Paso 



The plaiit varies greatly in its foUage, and 



It 



and with a rather shorter pappus, evidently passes into B. absinthifoHa, Benih. 

 is a true congener of B. ambrosioides. 



380. E-iddellia arachnoidea, Gray, Pl. Fendl. p. 94, adnot. Psilostrophe 

 gnaphalodes, X) 0. .' Prodr. 7. p. 261. Hills on the Rio Frio and Rio Grande, 



s ; June, July. — De Candolle's genus Psilostrophe, placed among the " Com- 

 incertse sedis," is founded on an imperfect specimen of this plant, gathered 



Texa 



positse 



Berlandier at San Luis Potosi. The name has priority over Nuttairs Rid- 

 dcllia, and would in strictness supersede it, if, as I suppose, this plant is generically 

 inseparable from Riddellia tagetina, notwithstanding the difFcrence in the pappus. 



381. Ambly 



DC. Prodr. 5. p. 668 



Prairies from Seeruin 



o 



Hio Grande, Texas. (Muskit prairies, twelve miles southwest of New Braunfels, May, 

 Lindheimer, 1850.) — I lirst received this striking plant from Mr. Wright in the 



• discoideis homogamis multi- (plus 20-) floris semipollicaribus subturbinatis ; involucri squamis vix biseria- 

 libus linearibus apice obtuso sphacelatis pubescenti-viscosis ; pappo (conformi ?) e paleis 10 Kquilongis 

 oblongo-lanceolatis muticis corolla subdimidio brevioribus ; achenio fere glabro. — " Vera Cruz, Antigua, 

 June, 1838," Linden, in herb. Hook. " Vera Cruz, Mexico, on sand-hills near the sea, 1840," GaleoUi, 

 no. 2627. — Eoot annual. Lovk^er leaves two inches long, including the petiole. 



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