96 UNITED STATES AND MEXICAN BOUNDAEY. 



Bahia pedata, Gray, PI 



Limpia, etc. ; Thurher, Wright 



Bahia (Aciiyropappus) BiGELOvrr (sp. nov.) : annua, striguloso-puberula ; caulibus gracilibus 

 diffuse ramosis ; foliis oppositis tripartitisj segmentis integerrimis vel inferiorum 2-3-fidis 

 lineari-filiformibus ; pedunculis filiformibus monocepbalis ; involucri laxi squamis 8-9 oblongo- 

 ovatis obtuse acuminatis glandaloso-pubescentibus ; Hgulis totidem oblongis ; acheniis basi 

 hirsutulis ; pappi paleis 8 obovatis obtusissimis eherviis tubo corolla disci viscoso-hispido fere 

 dimidio brevloribus, Valley of tbe Limpio, W, Texas, July, 1852 ; Bigelow. Stems 



branched from tbe base a foot or more in height. Leaves short-petioled ; their divisions 6 to 12 

 lines long. Peduncles solitary, 3 or 4 inches long. Involucre scarcely 3 lines in length, a 



little shorter than the disk. Flowers yellow ; those of the disk as many as 30 ; their corolla a 

 line and a half long ; the slender and glandular-hispid tube abruptly dilated into the cyathiform 

 5-lobed limb. Style as in B. ambrosioides. Achenia linear-clavate, obtusely tetragonal, nearly 

 aline and a half long. This is nearly related to* the Schkuhria? Neo-Mexicana, Gray^ PI. 



■ 



Fendl. p. 96 ; which_y however, is rayless and has disk- corollas scarcely longer than the pappus. 

 While on the one hand it is plainly a congener of Achyropappus schkuhrioides, Link & Otto,^ 

 (which in specimens from De Candolle and others, contrary to the generic character, taken from A. 

 anthemoides, has a pappus very much shorter than the corolla,) on the other it is equally insepa- 

 rable from true Bahia (B. ambrosioides, B. absinthifolia, etc.) I am unable to say exactly how 

 the various species are to be divided between Bahia and Schkuhria ; but apparently all the 

 many flowered ones must be excluded from the latter. 



Ambltopappus pusillus, Hooh. dt Am. in Hooh, Jour, Bot. 3, jp. 32 i^ (vide Graify PI. Wright^ 

 1,^. 123, in adn. (k Bot. WhippL Rep. p. 106.) Infantea Chilensis, Remyy in Gay^ Fl. Ghil. 



. - 



Aromia tenuifolia, Nutt. in Trans. Amer, Phil. Soo. lyp. 395, Monterey, California, near the 

 seaside, forming dense clumps ; Parry. 



r 



Yillanova cheysa^^themoides, Gray, PI. Wright, 2, p. 96. Cobre, New Mexico ; Bigelow, 



Wright. 



Schkuhria Hopkirkia, Gray, I. c. Sonora ; Wright, Seeds only were collected, from which 

 plants were raised for two seasons. 



Schkuhria Wrightii, Gi^ay, I. c. Sandy soil, between Babocomori and Santa Cruz, Sonora ; 



Wright, Thurher. 



■ Amulyolepis setigera, DC, ; Gray, I. c. Plains of Texas, from the Leona to the Pecos and 

 Eagle Pass ; Bigelow, Wright, Schott. 



Kiddellia tagetinAj Nuit; Torr. in Emory, Rep. f. 5. Texas to Sonora; common on the 

 frontier. 



PviDDELLiA ARACHNOiDEA, Gray, PI. Fendl. p. 94, c£ PL Wright, 1, p. 121. Common on the 

 Rio Grande, etc., from the Nueces (where it was also gathered by Berlandier, No 1041, 24T1) 



the Mimbres, etc. 



Hyme>^othrix Wislizeni, Gray, PL Fendl 



Mexico, and Sonora 



BigeloiOj Wright. 



Hymenothrix? WRiGnTH, Gray, PL Wright, 2, jp. 97. Sonora; Wright, Schott, Bigeloio 



mostiv in the mou 



itains. New Mexico, at the Cobre, Organ mountains, etc.; Bigeloio. 



AcTiNOLEPis MULTiCAULTS, DC. Prodr. 5, p. 655; Torr. d Gray, FL 2, p. 3T6. (Tab. XXXIII.) 

 Dana's Ranch, below Sau Luis Obispo, California ; Parry. 



BuRRiELTA -LX^osA, Gray, in Bot. Whipp. Pep. p. 107. Sonora, between Tucson and tlie Gila ; 

 Parry. Pappus of 4 lona; and 4 short palete in the disk-flowers, but of five each in the ray. 



'-^. — 1 j£^ 



