rus 
i: ERRATA. 
Page 149, last oe mm, "aa ” read ‘ arpogew 
150, line 14, read ‘‘ rimis.’ . 
151, line 20, erase pete et ’”? and line 39, for ‘‘ contractes’’ read ‘‘ contractis.’’ 
153, line 8, for ‘‘infimo’’ read ‘‘infima;’’ and line 9, for ‘‘acuminato’’ read ‘‘ acuminata.” 
155, line 6, ae: * rane subzequales mee a -valibila oO pilosis ;’’ line 43, for ‘ fasciculatea ”’ 
a cularis ;’’ and line 45, for ‘“ ae read ‘‘ 228 
156, fs 12, hae ‘* appressed ’’ insert ‘‘ branches. 
157, line 10, for ‘‘ clpodioides’’ read ‘éolpodioies” line 24, for ‘‘debile’’ read ‘‘ debili;’’ and line 46, for 
ot” Yea 6.7; 
158, line 7, for ‘‘ Spwcule 2-6 flor.” read ‘‘ Spicule 2-6-flore ;’’ line 10, for ‘‘ baribatis’’ read ‘‘ barbatis,’’ and 
for ‘*‘ plerumpue’”’ read ‘‘ plerumque;’’ line 12, after ‘‘sapius’’ add ‘‘ vaginis,’’ and for “ suffulte’’ read 
‘*suffulta;’’ line 30, for ‘‘ Major Monro’’ read ‘‘ Colonel Monro, of the 39th regiment, British army.’’ 
159, line 33, for ‘‘ occrpenTaLL’’ read ‘‘ occIDENTALE.”’ 
160, line 15, after ‘‘ Preris’’ add eet var.;’’ line 28, for ‘* Noroontana’’ read ‘‘ Nornocuzna ;’’ line 45, 
for ‘* Aspprum’’ read ‘' Asprp 
ADDITIONAL NOTES AND CORRECTIONS. 
BY J. M. BIGELOW, M. D. 
1. The general botanical sketch and that of the forest trees of Captain Whipple's survey were written immediately after 
ome return from California, and before any elaboration, or even a cursory examination, of the botanical collections had been 
Soon after our return, the collections, with the exception of the Cactacex, were placed in the hands of my excellent 
Shind Deets r Torrey, of New York. The Cactacex were not examined until the spring of 1855, illness and the obstructions 
to travel preventing my visiting St. Louis during the winter; a my report was made and printed before the 
memoir on Cactacee was prepared, a fact which will account for many discrepancies between the two. These notes are 
appended for the purpose of making the necessary corrections. the ough my name is associated with that of my highly 
esteemed friend Doctor Englemann, in the elaboration of the collections in Cactacez, justice requires that I should state 
that the diagnoses of all the new species are to be accredited to him 
2. ‘‘ First appearance of atom ie 
A ERIOPODA, BouTELOUA cuya, AND Bouretova nimsvta, under the general term of “‘ grama ~ se abound 
n the plains from about the Peston to shat the 113th degrees of agile. M, Torr 
Bourerova (CHoNDROSIUM) F ey 
aera by Major Emory, on the uplands bordering the valley of the Rio Grande, closely allied, if not my with One 
of our species, is well figured, (Pl. XII,) by Dr. Torrey, in Major ask report. In lower Texas, the common name of 
these plants is ‘‘ mezquite grass.’’ They all indicate a dry climate 
3. ‘* Mirabilis,’ page ~ is probably QuAMOCLIDION OXYBAPHOIDES, a4 
4. ‘* Evening primrose e 2, is Nutt. 
5. ‘Opuntia macrorhiza,’’ page 2, is Opunrra Rarinesquit var. Fusirormis, Engl. Various fibrous and tuberous rooted 
is species occur from Fort inti and still further east, to the mountains of Zuili, 150 miles west of the Rio 
. 
6. ‘*Cereus cespitosus,’’ pages 2 and 32. As an instance of the difficulties Tien the study of this interesting 
family of plants, I will here quote from a letter beet received from my friend A 
was associated with me on the Boundary Commissi Under date of July 31, ae he writes: ‘‘Since I sent you the 
letter press copy, (Cactacew of the Boundary, by De Sivireaets) I have made a new discovery, which separates a cated 
Cereus from Cereus cespitosus. It is on a living specimen which I brought on my last trip, from near Escondida gs 
(El Paso road,) and which, eae produced from ten flower buds six perfect blossoms, so decidedly different te 
those of C. cespitosus that I gave a minute account of it to Dr. Engelmann. Amon ng the collections of your living 
specimens in Wathington, tied re are two or three individuals very similar, if not identical, with my new one, but also 
different in habits from the white-spined true C. cxspitosus, so that I hope we soon will be able to corroborate the fact by 
the study of more individuals. C. ceespitosus has short farinaceous white spines, of a lax nature, whilst the spines of the 
new one are rigid, horny, yellowish translucent, adscendent, and recurved; the lower ones 
the petals, whence I have given it the name Cereus concotor. . cespitosus flowered for me almost at the same ti 
so that I a a aa opportunity to make close observations. In (. cxspitosus, the flower buds are clothed with a dense 
greyish woo d bear a beautiful purple showy blossom, 2 in diameter and 2” in len ngth. In €. concolor, oe flower 
ene nies naked, small campanulate blossoms, with yellowish sanguineous petals, a te: like the spines 
in diameter and 0.8” in length.”’ In the the spines, this plant very nearly approaches C. pec us, Engl., but in sea 
ae some other characters, it differs very widely. In the size of the flower, arrangement pa ce of the spines, it more 
aearly approaches C. viridiflorus, between which and C. chloranthus more observations will be required to pairs that it 
