BOTANY. 83 
PERICOME CAUDATA, Gray, Pl. Wright, 2, p. 81. Cobre, New Mexico; Wright, Bigelow. 
Hot Springs, east of the Mimbres ; Bigelow. 
BACCHARIS C@RULESCENS, DC. Prodr. 5, р. 402. From the lower Rio Grande to the Mimbres, 
and the Colorado of the West. 
BACCHARIS CGRULESCENS, DC. Prodr. 5, p. 402. var. foliis angustioribus. В. Pingrea, 
Nutt. in Trans. Amer. Phil. Soc. Т, р. 331, non DC. San Luis Rey, California; Parry. The 
specimen accords with No. 305 of Wright’s N. Mexican collection, and is, I doubt not, merely 
a narrow form of B. ceerulescens, DC. But it is Nuttall’s В. Pingræa, which is wrongly ad- 
duced as a synonym of D. Douglasii in Torr & Gray, Fl. N. Am. 2, p. 259, the real B. 
Douglasii (— No. 1776 Pl. Hartw.) not being then known to the authors. 
BACCHARIS CONSANGUINEA, DC. Prodr. 5, p. 408. San Diego ? California; Schott. 
BACCHARIS PILULARIS, DC. l. с. San Luis Rey, California; Parry. 
BACCHARIS SALICINA, Torr. & Gray, Fl. On the Rio Grande and Mimbres; Wright, 
Bigelow, etc. 
BACCHARIS ANGUSTIFOLIA, JMichz?; Gray, Pl. Lindh. 2, p. 224. Fort Inge, Texas, to the 
San Pedro valley, Sonora, etc. ; Schott, Bigelow. 
了 BACCHARIS Ewonyr (sp. nov.): suffruticosa, glabra, paniculato-ramosissima ; ramulis angu- 
lato-striatis ; foliis subspathulato-linearibus obtusis uninerviis integerrimis (subpollicaribus) 
deciduis vel raris, ramulinis minimis ; capitulis solitaris geminisve in ramulos breves vel pedun- 
culos paniculatos ; involucro feemineo obovato majusculo multiseriali pappo dimidio breviore; 
squamis glabris appressis coriaceis obtusis, exterioribus ovatis, intimis linearibus ; acheniis gla- 
berrimis.— Very common on the Gila; Emory, coll. in 1846, etc. Fort Yuma, E. California ; 
Major Thomas. Sterile plant not seen. Involucre of fertile flowers 3 or 4 lines long ; the thick 
scales closely appressed, and all the outer ones very obtuse, their very slight scarious margin 
not ciliate. Pappus half an inch long, whitish. 
BACCHARIS SERGILOIDES (sp. nov.): suffruticosa, glabra, confertim ramosissima ; ramis ramu- 
lisque angulatis rigidis articulatis sepissime aphyllis; foliis dum adsunt raris parvis spathu- 
latis uninerviis, ramulorum ad bracteas minimas reductis; capitulis parvis in ramulos confertis 
subsessilibus, masculis magis glomeratis; involucro obovato, squamis multiseriatis appressis 
glabris oblongis, vel interioribus lanceolatis; foem. acutis; masc. omnino obtusis; receptaculo 
conico subpaleaceo ; acheniis glabris ; pappo brevi.—Along the Gila or Colorado ; Emory, 1846. 
Dry arroyos, 50 miles west of the Colorado; Bigelow. Southern part of California; Dr. J. Le 
Conte. Apparently two or three feet high, and very bushy and broomlike ; the numerous heads 
only two, or, at most, three lines in diameter. 
BACCHARIS BRACHYPHYLLA, Gray, Pl. Wright, 2, p. 83. Southern borders of New Mexico; 
Wright. 
BAccHARIS Wrientu, Gray, Pl. Wright, 1, p. 101. Western Texas to Chihuahua ; common. 
BACCHARIS PTARMICEFOLIA, DC. Prodr. 5, p. 419; Schultz, in Bot. Herald, p. 303. Hill sides 
between Babocomori and Santa Cruz, Sonora ; Wright (1201). This is the same as Seemann's 
plant from the Sierra Madre, and, except in the smaller leaves and heads, accords very well 
with a specimen from the valley of Mexico, collected by Schaffner, and named B. ptarmicefolia 
by Dr. Schultz. It accords still better, perhaps, with the character of B. thesioides, to which 
De Candolle's species and all these specimens are probably to be referred, 
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