428 STRUCTURE AND FUNCTIONS OF THE POLLEN. 
exhibits it in a very striking degree, and a similar phospho- 
rescence was noticed by Rumphius in a species of the same 
genus in Amboyna, and it is probable that other species pos- 
sess the same property. Indeed, Fries seems to assert as 
much in his “ Epicrisis.” The luminous appearance exhi- 
bited by certain Rhizomorphe, which are in general anomal- 
ous forms of Fungi, has been frequently described. Mr 
Gardner's plant however is doubtless quite new, and is pro- 
bably referrible to Fries new genus Panus, which associates 
those Agarics of the tribe Pleurotus which are of a more per- 
sistent and coriaceous substance, as A. conchatus, &c. "The. 
specific appellation proposed by Mr Gardner is certainly not 
preoccupied ; but as the property of phosphorescence is not 
peculiar to his plant, I should prefer denoting it by the name 
of its zealous discoverer. At present I have seen no speci- 
mens, but there appears no reason to doubt, though it has 
the habit of a Cantharellus, that he has referred it to its 
right place in the Mycologic system. It is to be regretted 
that he did not ascertain the colour of the sporidia, a point 
of such great importance in the vast genus Agaricus, and its 
allies. I am, My Dear Sir, with much respect, : 
: Faithfully yours; — 
Den. M. J. BERKELEY. 
— To Sir W, J. Hooker. 
S E ; Kine’s Curr, August 4, 1840. 
When the specimens arrive, we shall take the opportunity, 
with the assistance of the drawing made on the spot by Mr 
Gardner, of giving a figure of this interesting Agaric. | 
: : XXVIL—On the Structure and Functions of the PoLLEN. e 
DUM ; | By Joun ALDRIDGE, Esq. s 
x feel gratified in affording an early place in our Journal to the follow- - 
* 
. who, we 
Pena vill continue his researches, which cannot fail to throw a 2 
of vegetable physiology. We have received - 
observations on that very obscure but interesting subject, vegetable i n 
which have been communicated in a letter by a gentleman, — 
