^T. 28.] JOURNAL. 223 



Endliclier is to give a figure in " Iconographia Gen- 

 erum Plantarum," and the description has gone to 

 the printer in one of Endlicher's articles in the " An- 

 nals of the Vienna Museum," — Ccelostylis Logani- 

 oides, Torr. & Gr. Can't we get more of it ? Has 

 Leavenworth found it ? 



I have been looking over the " Reliquiae Hsenkeanse," 

 and examining what specimens of the collection from 

 North America they have in the Vienna Herbarium. 

 Endlicher goes this week to Carlsbad to recruit his 

 health, stopping a day at Prague. He has kindly 

 taken a list of my desiderata of the species published 

 in that work, and I hope to get some bits of them. I 

 have copied so much from the work that we can get 

 along even if I do not see it again, but as I was about 

 to purchase it, Endlicher suggested that he should see 

 if Presl himself has not a copy left for us. Follow- 

 ing this hint I have sent by Endlicher a copy of the 

 " Flora " to Presl,^ in nomine auctorum. 



There is a new genus of Presl in Loasese (Acrolasia) 

 from Mexico, which may be Nuttall's. The most curi- 

 ous thing is a new genus of Datisceae from Monterey 

 (why have none of the other collectors found it?), 

 called Tricerastes ; very interesting. 



I find from all inquiries that it is very difficult to 

 find Nees von Esenbeck ^ at Breslau, especially in the 

 summer. He is a queer stick altogether, is not well 

 satisfied with his situation at Breslau, and spends the 

 greater part of his time at a little place high up in the 

 Riesengebirge, studying Hepaticse. 



1 Karel B. Presl, 1794-1852 ; professor at Prague and curator of 

 the herbarium. 



2 Christian Gottfried Nees von Esenbeck, 1776-1858; professor 

 of natural history at Bonn and Breslau. 



