MEMORANDA. 59 
our pages (Vol. III. p. 297) by Mr. Carruthers for all the genera of 
that tribe. In his investigations, Dr. Lindberg discovered that Blyttia 
of Endlicher was identical with Gray's older genus Pallavacinia, and 
in accordance with the rule always acted on by botanists, he rejects 
the newer name. We notice that Milde approvingly refers to the cor- 
rection in a recent number of ‘ Hedwigia,’ but he seems to have over- 
looked the fact, that this correction had already been made in that 
very journal in an abstract of Mr. Carruthers’s paper by Gottsche. It 
is true that Gottsche disapproved of accepting Gray’s names, because 
of the numerous changes which their adoption would necessitate. The 
uniform practice must, however, in the end prevail, and future workers 
entering on the study of the Hepatice, without the prejudices in favour 
of the present nomenclature which must exist in the mind of one who 
has so largely formed it as Dr. Gottsche has, will restore the names of 
Gray, and accord to him that credit which is certainly his due, but 
which even the botanists of this generation seem very loath to bestow. 
MEMORANDA. 
Pinus Banksiana AND Pinus rubra.—lt is irre that two of our most 
beautiful native trees, the names of which head this article, should not be in 
cultivation. On referring to botanical eem it is clear no one knows how 
beautiful they are. Of Pinus Banksiana, Dr. Gray says, “a low straggling 
composed of Pinus Banksiana, and are generally from twenty to forty feet 
high,—at Escanauba we handled one which was probably sixty feet high and 
four and a half to five feet in cireumference,—little inferior in height to a very 
e specimen of Pinus rubra alongside of it. Richardson says, towards the 
North Pole the thickness of the trunk is out of usual proportion to the breadth 
of the branches. Not so here. The trunk had a very long tapering slender 
appearance as compared with the branches. Occasionally specim 
be seen standing by themselves ; and nothing could be prettier than the slender 
straight stems, clothed with its slender feathering. We have nothing from 
Gray or Banksian Pine of this region. The Red Pine is very much like the 
Austrian in appearance. Growing in thick woods, no one can appreciate their 
beauty; but occasional specimens, standing by themselves, show 
