AG 
with a smooth, red bark, bearing in November and December 
red edible berries. If it is at all distinct from 4. Menzzestz, 
Pursh, of the northwest coast, which it closely resembles, it ought, 
from the colour of its bark, to bear the name of A. sanguinea. 
These, together with a low scrubby oak tree, with small peren- 
nial leaves, were the only trees collected about Cosihuiriachi. 
A species of Juniperus with red berries, a Thuja, and a small- 
ah Cowania (2), all of them in fruit, were also brought from 
there. 
Between Chihuahua and Cosihuiriachi, but especially about 
the latter place, the porphyritic soil produced a number of Cac- 
tacee, some strange Kehinocacti, several Mummillaria, a tew 
Opuntie, and principally a great variety of Echinoceret. One 
of the latter is completely covered with stout and long spines ; 
another has short radiating spines, closely adpressed to the 
plant ; a third has short radiating spines with single, stout black 
central ones, which project from the plant in all directions; a 
fourth is distinguished by its longer and curved reddish radiating 
spines, with a stouter one projecting from their centre. 1 have 
all of these in cultivation, but have not as yet seen flowers or 
fruit from any one of them; still they cannot but belong to 
my genus Lchinocereus, to judge from analogy. 
Some Mammillari@ of Cosihuiriachi are distinguished by their 
compact shape; the tubercles are very short, globose, or even 
hemispherical, the spines strong, numerous, radiating, and ad- 
pressed, the fruits central from a woolly vertex: Mammillarie 
compacte. Another, M. gummifera, belongs together with two 
species from Texas, and from the mouth of the Rio Grande to 
the section Angulares, with pyramidal 4-angled tubercles, and 
milky juice, which hardening forms a gum. A third species 
belongs to Crinite, and is a most elegant little plant with 
numerous hair-like radiating and one stout, hooked, central spine ; 
[have named it WV. Jarbata. The specimen communicated by 
Dr. Wislizenus, the only one found, was dead when it arrived 
here, but many fruits were adhering to the plant, and I was 
thus fortunate enough to cultivate it from the seeds. 
Other remarkable Cactacee from the State of Chihuahua, 
which have been communicated to Dr. Wislizenus by Mr. Potts, 
of Chihuahua, are not described here, as it is believed that 
Mr. P. has sent them already to England, where, no doubt long 
before this, they have been published. 
Amongst the other distinguished plants of Cosihuiriachi and 
Llanos, I cannot omit to mention a beautiful De/phinium, which 
grew abundantly here; a Silene, which is perhaps new, but 
