7 : ‘ 
«.@ ['caticsee; to: difference between this figure anda plant which I 
have received from El Passo, by Dr. Wislizenus, and which I have 
: mecribed | in his report under the name of O. vagina ata. 
os. 13—15 are no Cacti.. In 13, I recognize the Keberlinia — 
“| guccarini, a a shrub common in the chaparals “of northern Mexico 
which has been collected in flower about Parras and Saltillo, by 
‘Drs. Wislizenus and Gregg. The fruit is-unknown so far; the speci- 
men figured i is, however, in fruit; the berry (2) is globose, 3—1 line 
, in diameter, crowned with the rudiment Orleye, style. It was eol-> 
lected October 23d, eh: and is described as a shrub 3 feet high, 
with low, epoutin bou ghs. 
14. Collected “‘November 15, 1846, 4 feet high, rare,” is, per- 
haps, another species of the same genus; but the entire sheet ad of 
flower or. fruit makes it impossible to. decide. 
Branches similar, straight, leafless, ending i in ares: dark pints 
. but much elongated and sub-erect, not horizontal, as in No. 13. 
15. ‘October 22d, very ntwinidond: 3. feet high, fruit 5 seas 
long. ? . «Atyis entirely unknown to me, perhaps an agave? at least 
some amaryllidaceous lant if the fruit is correctly represented, 
“with, Jarge radical leaves, and a een Or ang wag. inferior fruit, 
supnamnes with the remains of the flow 
: n your letter you figure and denaribe a, cactus, plant: of which 
' iaeAha ro . sent me the seeds; if I am correct aboat this from 
your notes, I -would describe it in ‘the following manner 
Stem. tall, erect, simple, or with a few erect branches, below 
without sprees ps about 20,0 ane spiral; fruit lange, e yes 
seeds small (0.7 cs long) obovate, abliquely truncate at 
black, smooth, mbryo hooked, no albume picotyledons 
"foliactous incva 21 
_. Stems 2- feet ii n circumference, 25 to 60 feet high. ; 
The only true Cercus approaching this in size is Gerews Reo. 
vianus; but this is vastly different. The question then arises 
whether our species is not one of the few arranged now under the™ 
cy ies Pilocereus ; but if iti is a constant fact that the cotyledons of 
ocereus are ‘thick and globose, our mpeaien cannot Od "7 
the cotyledons are absolutely’ those o lied 
in California-pitahaya, but it appears th 
name all large columnar: cacti, the: it: 
siplant 3 which is commonly called Cereus gecietgl is widely _ 
ent from this California giant. Fy Hohe ae thar ee 7 
oY propose for it the. pee’ Cereus gigantenh Tei a 
he dex geww bite: seed is of an O of 
o circu 
a 
* 
