< : ‘ A oo = 
WY eG ee 
/ 1a(2 aa 
very mueh br sndhiod, often with remarkably ood and not ta 
with edible fruits. ‘Amon ng” th many rhamnaceous and celastraceous 
spe and some Euphorbiaceae, were particularly conspicuous, as we' 
Timoseae, one of which.I must not forget to mention, becauseit © 
Pe per haps the smallest shrub in this family; not more than one or two 
inches high, with diminutive leaflets, but large purple flowers ; it was col- 
lected near Chihuahua. 
One of the most offensive of these chaparral- shrubs was the Koeberli- 
< nia, Zuce., called here Junco, (Gregg.;) a small tree rather than a shrub, | 
about 10 feet — stem 4 to 6 inches in diameter; wood hard, dark 
brown with white alburnum; terminal branches green, with a dark 
_ brown spinous termination, | to 2 inches long, and 14 to 2 lines in diam- 
"eter; very small subulate leaves soon deciduous; small white flowers in 
rt lateral racemes ; fruit notsseen; in flower in n May. It was frequently 
ikon south of Chihuahua to sae (and Matamoros, Gregg.) 
We ang here Roce in the interestin Sri “pag mentioned above, (see 
a a 
; 3s to t 
“ Colorado, in Texas. Tecoma stans reappeared here with smaller 
FS t leaves and more alate sees Hopep probably not. distinet — 
“from the larger nd smootker plant foun 
: to beautiful Pougquiera sbbenicabs pal note 16,) with its panicles of - 
ast tubular crimson flowers, rose here abovevall other shruvs;.in some — 
i inaliiest it reached a height of from 20 to 30 feet, and perhaps more, al- 
Ways in single stems. 
A few species of Yueca, together with Opuntia pi pte Care 
formed almost the only trees on the arid plains. But in the 
- Nazas 00 disti at | 
Guajacum angustifolium, n. sp., foliis 5b 5 (4-8) jugis jb ahicdeis 
iolis oblong a nearibus, Feticulatis ; pedicellis et basi calycis pubescen- 
_ tibus ‘ 
eee Pa Pan 
 ¢ommon fi 
lobo, pubescente ; capsula bivalvi, seminibus 2 ovatis. 
; collected also by Dr. Gregg, who has found the plant 
Monclova to Parras, Monterey, and Camargo; found by © © 
the Pierdenales river in Deas: flowers in April and. 
oung yigorous shoots 6 to 8 pairs, mostly only4 — 
Ni lines ite $tol it ine wide, reticulated on at siden Purple flowers 6 
: (; seeds s yellow, of ae size of small beans. The h: 
7000 called “ Guajacan” shame ely 
venereal Oy a Gregg.) 
n. 8) piex ov: -conica, tes 
