OP ARTS AND SCIENCES. 385 



que serratis trinervatis, venulis subprominulis subtiliter reticulatis; 

 cyma polycephala corymbosa ; pedicellis gracilibus breviusculis ; ca- 

 pitulis 8-10-floris (lin. 4 lougis) ; involucri bracteis 8-10 oblongo- 

 linearibus teuuibus extus glauduloso-pubentibus corollis albis nunc 

 purpureo tinctis omuino glabris dimidio brevioribus. — Shady ravines 

 under pine trees on the higher mountains (8,000 feet) above Batopilas, 

 October, Palmer, 329. 1 do not identify this with any described spe- 

 cies. The reticulation of the veiulets is more conspicuous and finer 

 than in any of its allies.* 



Brickellia glutinosa. Frutex humilis, ramosissimus ; foliis 

 parvis (lin. 2-3 longis) cuneatis vel flabelliformibus inciso-dentatis 

 coriaceis fere eveniis glutinosis in petiolum lamina parum breviorem 

 attenuatis oppositis et alternis ; capitulis brevi-pedunculatis ramulos 

 terminantibus semipollicaribus circiter 15-floris; involueri bracteis 

 obtusis, extimis lato-ovalibus, intirais linearibus ; acheniis parce minu- 

 teque hispidulis. — S. W. Coahuila, on arid limestone cliffs of the 

 mountains near Jimulco, Coahuila, Pringle, 143. 



Brickellia brachiata. Inter B. grandijioram var. minorem et 

 B. Coulteri collocanda, minute pubescens ; caule erecto a basi ut 

 videtur herbaceo bipedali ad apicem usque subsequaliter folioso ; foliis 

 (poll. 1-2 longis cum petiolo semipollicari) deltoideis vel hastato-sub- 

 cordatis parce grosseque dentatis ; capitulis sat numerosis longiuscule 

 pedunculatis sparsisque in ramis divaricatis paniculce cymaeformis 

 foliata? ; involucro glabro cum fioribus 10-12 semipollicari, bracteis 

 fere omnibus obtusis, extimis ovalibus. — At the base of the mountains 

 near Batopilas, iu shade, Palmer, 169.t 



Aplopappus tenuilobus. a. aureo affinis, subpedalis e radice 

 annua, caule a basi ramoso cum involucro viscoso-puberulo ; foliis 

 glabris in lobos angusto-lineares rhachi haud latiores setuloso-mucro- 

 natos pinnatipartitis ; involucro hemisjihscrico (lin. 5 alto), bracteis 

 numerosis lineari-Janceolatis fere omnino herbaceis parum imbricatis 

 discum a^quantibus, exterioribus vix brevioribus; ligulis 15-20 ob- 



* Dr. Palmer also collected Eupatorium collinum, DC. (271), E. Schaffneri 

 Schultz Bip. (332), E. Guadalupense, Spreng. (276), and E. occideniale, Hook., 

 var. Arizonicum, Gray, running into forms which will provoke the separation of 

 this from the plant of the Pacific coast. Mr. Pringle collected the same plant 

 (his 618), also E. Gregijii, Gray (247), E. Parryi, Gray (135), E. Wrujhtii, Gray, 

 (ttOO), and E. petiolare, Mo^ino (2GG). 



t Brickellia simplex, Gray, was collected both by Pahncr (430) and by Pringle 

 (G41) ; the former obtained also some forms of B. betoniorfolia, Gray (434, 435), 

 and the latter, forms of B. Wislizeni, Gray (323, GOO), and several otlier species, 

 also Barroeta suhuligera, Gray (34G). 



VOL. XXI. (N. 8. XIII.) 25 



