74 UNITED STATES AND MEXICAN BOUNDARY. 



Caephochaete Bigelovii, Gray, PI. WrigU, 1, p. S9, 2, p. 71. New Mexico to Santa 



Cruz, Sonora ; Bigeloiv, Wright, Parry. Sierra San Luis ; E. K. Smith. 



CAEanNATiA TENUiELORA, DC. Prodr. 7, p. 267; Deless. Ic. Sel. 4, t. 99; Gray, I. c. Copper 



Mines to Western Sonora. 



KUIINIA EDPATOP.rOIDES. 



Narrow leaved forms, mo 



New Mexico and Sonora, extends far into Mexico, and nertaDs is K 



Hook. Fl 



mucronata, DG. Mountains of 



the Limpia, and Sal veto Creek, Texas ; Bigeloiu, Parry. 



Gabpdephokus junceuS; Benth. Bot. Sidph.^ p. 21. Dilavial banks of the Colorado of the 

 West^ in dry and sandy beds of ravines.; Scliott. 



PEUCEPHYLLUM, Nov. Gen. Eupatoriacearum. 



Capitulum plnri-(10"16)-flornm» [Involucrum circiter 12-pbyllum, disco brevius, laxum ; 

 pbyllis vis biseriatis lineari-siibulatis, inferne carinato-concavis margine tenniter scariosis, 

 superne foliiformlbus. Receptaculum planum nudum. Corollas longe cylindric^, fauce non 

 ampliatae, 5-dentat?e, dentibus ovatis patentibus. Styli rami lineares, plano-convexi, obtusissimi, 

 prorsus minxitim glandulosi. Acbenia baud matura subturbinata, teretia, birsutissima. Pappus 

 capillaris, setis rigidulis pluriserialibus valde inaequalibus denticulatisj longloribus corollam 

 eubaeq[uantibus. rrufciculus ramosus^ glanduloso-viscidulus ; ramis monocepbalis U8C[ue ad 

 apicem foliosis; foliis acerosis punctatis alternis ; floribus lutescentibus. 



Peucephtllum Schottii. — Diluvial banks of the Colorado^ in Sonora ; February ; ScJioU. 

 Stems a span high, loosely branched. Leaves crowded^ an inch or less in length, filiform, 

 obtuse, glabrous, but glandular when young and more or less glutinous, strongly glandular- 

 punctate. Head cylindraceous, half an inch long. Scales of the involucre obscurely one-nerved, 

 the alternate and exterior ones rather smaller than the others. Corolla glandular at the summit. 



I know of no published genus to which this manifestly Eupatoriaceous plant is particularly 

 allied. The name alludes to the acerose, fir-like foliage. 



WriaJit^ 1, ». 81, & 2, n. 71. Santa Cruz, Sonora: W) 



T/ntrler. 



Beickellia yeronic^folia, Grayy I. c/ Sonora; Schott ; the habitat not recorded. This is an 



abundant species in Northern Mexico, 

 landier's collection. 



ght different numbers 



Brickellia laciniata, Gray^ PI. Wright^ 1, p. 87. Bachimba ; Thurher. Organ mountains ; 

 Bigeloiv. On the Rio Grande; Parry. Dr. SchultZj in Seemann's Botany of the Herald^ p. 

 301, has applied to this species the name of B, dentata, SchultZy mss., supposing it to be De Can- 

 dolle's Clavigera dentata, having overlooked my statement^ in PL Wright^ 1, p. 83, that the 



plant of De CandoUe is B. Riddellii, and that the present species was not described in De Can- 

 dolle's Prodomus. It is 1365 and 1783 of Berlandier's collection. 

 Brickellia simplex, Gray^ PL Wright^ 2 p. 73* Babocomori to Santa Cruz, Sonora. At 



r 



Bufotillo Ranch, Dr. Bigelow gathered specimens of a Brickellia with the foliage of B. simplex, 

 and with a similar involucre^ but the heads are small and more numerous. 

 Brickellia Wislizeni, Gray^ PL FendL p. 64, & PL Wright , L c; Santa Cruz; Sonora; 



BigeloWy Wright^ dec. 



