35 
over it whereon were laid offerings of food and water. No 
persuasion could induce the proprietor to part with it. 
The order Amaryllidee, to which the Pancratium belongs, is 
almost entirely absent in Borneo. If future observations con- 
firm the belief, that the venerated Si-tudip was brought to 
Borneo when that island was peopled, and that its native country 
is to the eastward, it will follow that thence came the Dyaks also. 
Sketch of the Botany of Dr. A. Wisuizenus’s Expeprtion 
Jrom Missouri to Santa Fe, Chihuahua, Parras, Saltillo, 
Monterey, and Matamoras ; 
BY 
Dr. G. ENGELMANN. 
(At p. 391 of the London Journal of Botany for the present year, we noticed 
the Travels of Dr. Wislizenus in the countries above mentioned. We have here 
the pleasure to give Dr. Engelmann’s sketch of the Botany of that Journey, 
omitting, however, the descriptions of the new plants, which will soon find a 
place in our European systematic works. ] 
Dr. Wislizenus has intrusted to me his very interesting 
botanical collections, with the desire that I should describé the 
numerous novelties included in them. Gladly would I have 
done so, had not leisure been wanting, and were I not here (in 
St. Louis) cut off from large collections and libraries. As it is, 
I can only give a general view of the Flora of the regions tra- 
versed, and describe a few of the most interesting new plants 
collected ; with the apprehension, however, that some of them 
may have been published already from other sources, without 
my being aware of it. BR 
In examining the collections of Dr. Wislizenus, I have been 
materially aided by having it in my power to compare the plants 
which Dr. Josiah Gregg, the author of that interesting work 
“The Commerce of the Prairies,” has gathered between Chi- 
huahua and the mouth of the Rio Grande, but particularly 
about Monterey and Saltillo, and a share of which, with great 
liberality, he has communicated to me. His and Dr. W.’s 
collections together, form a very fine herbarium for those regions, 
The tour of Dr. Wislizenus encompassed, as it were, the 
valley of the Rio Grande and the whole of Texas, as a glance at 
