7 ae A ® : 3 . * 
4 Lg 
as / ’ es : ; log WY 
= / In the following: spring Dr. wipifzerils accompanied the Missouri vol- 
/ -wnteers, ‘under Colone}, Doniphan, from Chihuahua to Patras, saps 
ja rey, and Matamoros. 
Mente, as ever, heagain made thi ge collections on this tour, but ce 
duties as a military surgeon” alee his time rather more than the nat- 
-uralist shonld have desir Nevertheless ‘his collegtions are very full. 
- Porta r. Gregg acc nied the same expedition, and also made 
'~ “yich celléttions in that pica unknown region, mae we may consider 
as the southwestern limits of the valley of the Rio Grande. 
oh} "Before going into detail I will only remark eed ae a refexengad™: 
s map and sections will more aly present, that the ages betwee 
wn Chibuabud and Pa®ras has a gen vation of from 4,000 to” 000 fers 
iby between Parras and Saltillo it ise om 5,000 to 6,000 feet, ani thence it ' 
rapidly descends towards the lower Rio Grande ‘ 
South of Chihuahua, a curious leafless Earphenbia was col lected, with | 
inberous roots and leafless stem, ne’ shin apparently a near relative ; 
of Sade seth owe Here, for the first*time Berberis trifoliata, Moric., _ 
a 
4s 
BE: 
=) 
a 
x 
@: 
5 
@ 
“ 
oF 
& 
” 
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o 
= 
ia 
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e. 
Mi 
ae 
3 
B 
ts 
5 
ai 
ches wi. £. pete” Be fh ete, pechinata Salm Fg se ios : 
euliarly interesting, as furnishes a means of males a Tex 
© species, which has fae unded to be entirely distinct. The 
description of the plant, (which died re hout prod flowers,) found. 
Gn several works, as well = yen preces on Caet , before ~ 
"me, of Foerster, Leipzig,1 ; rince Salm. eee eS 
specimens sent from Chihuahua ee Mr. Potts; it cinehp sprees f 
Foers- 
_ ‘with my specimen from the same bags ‘But the cues . 
: ter’s bia the Site of 2 hs. cit a Cassel copie in 1843, (not 
t 6 line a 
v. y n4in s 
;° L aieage 5 teothied, vinelédin >» 
; yu i al ‘nut olive green acumi a 
bes . Singularl dn iflatum, , Torr. and “Frem perhaps a 
too near a specifically separated ; but a arently ¢ distinet by ‘Gs hairy =~ 
lea and bracts, the furcate division oP the al “poe he la rge. _pumber et. 
s in each involucrum, and perhaps” ol , (no ot fe ; 
ineari-oblongo ; "eco 
aeigee lacintis ‘subollatis 1 ab 
I viriachi, fwers in September... 
» bu t the br Bate Rowers, an 
? age 
3 a 
ee EO igh Ne 
ye Ae’ * 
4 
