\ 



96 . PLANTS WEIGHTIAN^. Tl. 



Ligiiles 8 or 10, broadly obovate, 3-lobed at tlie apex, bright yellow, as are the nu- 

 merous disk-flowers. Pappus of the ray and exterior disk-flowers entirely muticous 

 and obtuse, about half the length of the achenium ; of the inner disk-flowers, in- 

 cluding their rather short scabrous-denticulate awn, almost as long as the achenium. 

 The pappus of some of the intermediate flowers is intermediate in character. — 

 This plant so much resembles Bahia pedata. No. 387 of Wright's former collection, 

 that I was about to pass it as a variety of that species, with more dissected leaves, 

 when I observed the elongated and awned palese of the pappus of all the inner 

 flowers. This is an anomaly in the genus : none of the species except B. pedata 

 show even a manifest midnerve to the pappus. 



B. PEDATA, Gray, PL Wriylit p. 123. Hills between the Limpio and Ojo de 

 Leon ; June. (The original specimens, No. 387, were gathered on the Limpio.) — 

 The few specimens collected the present season are stouter than those of 1840 ; the 

 leaves with larger, broader, and more incised or lobed segments. It still more re- 

 sembles the following plant ; from which the obtuse and fewer scales of the in- 

 volucre, as well as the pappus, distinguish it. 



ViLLAXOvA CHRYSAXTHEMOIDES : puberula, glabella ; caule erecto superne panicu- 

 lato ; ramis floridis pedunculisque subcorymbosis viscoso-glandulosis ; foliis alternis 

 1 - 2-ternatipartitis, segmentis 2 - 3-lobatis seu pinnatifidis, lobis oblongis vel sub- 

 linearibus obtusis ; involucri squamis subtriseriatis sequalibus acuminatis ; ligulis 

 16-20 ovali-oblongis ; fl. disci multis. — Amaurial dissecta, Gray, PL FendL p. 

 104. — Sides of mountains, at the copper mines. New Mexico; Oct. (1257.) — 

 Stems one to four feet high. Leaves all alternate ; the larger ones 2 to 4 inches in 

 diameter, glabrous or nearly so. Heads half an inch in diameter, exclusive of the 

 ligules, which are 5 lines long. Flowers all yellow. Scales of the involucre 16 to 

 20, herbaceous ; the exterior lanceolate ; the inner oblong-obovate and conspicu- 

 ously acuminate. Corollas, especially the tube, beset with very glandular short 

 hairs. Branches of the style in the disk-flowers tipped with a short and obtuse 

 cone. Eeceptacle rather convex. Achenia quadrangular, subclavate, nearly gla- 

 brous, striate, all fertile. — This plant is to Bahia proper what the original species 

 of Yillanova are to Achyropappus. There is nothing but a larger number of flow- 

 ers in the head to distinguish it from Villanova, with which it accords very well 

 in habit. 



Ambltolepis setigera, DC. Prodr. 5. p. 6GS ; Gray, PL Wright, p. 121. Prai- 

 ries of the Leona, Western Texas ; May. (1258.) 



RiDDELLiA tagetixa, Ntitt. ; Torr. in Emory, Pep. t. 5 ; Gray, PL Fendl. p. 93. 

 Alluvial soil along the San Pedro, Western Texas ; May. (1259.) 



AcTiNELLA EicHARDSONii, Nutt. ; Torr. 8r Gray, FL 2. p. 381 ; Gray, PL Fendl. 

 ^.101. Stony hills at the copper mines. New Mexico ; Aug. (1260.)* 



* On the Mimbres, in the spring of 1851, Dr. J. M. Bigelow gathered specimens of Actinella argentea, 

 Gray, PL Fendl. p. 100. In the same region he likewise discovered another well-marked species, 

 viz. : — 



Actinella Bigelovii (sp. nov.) : caulescens, floccoso-lanata, demum glabrescens ; caulibus e rhi- 

 zomate perenni erectis simplicibus striatis apice longe aphyllis scabris monocephalis ; foliis angustissime 



