D (— 
DR. HOOKER— PINUS PEUCE AND P. EXCELSA, 115 
from wrinkling. The sporangia also show the formation of the sporidia 
in different stages, that is, the resolution of their contents into sporidia. 
One has burst, and shows the suspending mucilage of the cell to be 
coloured, as well as that of the contents of the sporidia. They are, for 
the most part, covered with a network of smaller filaments, which 
seem to spring from the same filament on which the sporangium is 
borne. What the office of this may be I cannot say, unless it be con- 
nected with impregnation, after the manner pointed out by Pringsheim 
in Saprolegnia, &c. The drawing also shows sporidia in process of 
germination. The whole on the scale of qigth to =,\55th of an inch, 
7. e. on the same scale as that of Mycetoma. 
Largest sporangium „12, diam.; sporidium sr long, oval, acu- 
minate; filament 5455 Across, in long cells, with the nucleus at the 
upper end. See fig. 2. 
Fig. 2. Filament, more magnified. 
Fig. 3. Sporidia, more magnified. 
Fig. 4. Greatly magnified view of the layer of Chionyphe Carteri, as it grows 
over the surface of the water in the glasses containing portions of the 
foot affected with Mycetoma, after the latter have been placed aside for 
maceration. Vertical section, showing—a, the upper layer of filaments ; 
b, the middle layer, where the sporangia are chiefly formed ; and c, the 
lower layer, composed chiefly of its mycelium. 
I could not get the Chionyphe to grow on paste after the spring and 
beginning of summer, and therefore infer that this is the time at 
which it fructifies, which it did at first vigorously on the rice-paste ; 
in June the formation of spores began to cease, and shortly after- 
wards all the spores were discharged, and, together with the ruptured 
membranes of the sporangia, were found scattered throughout the re- 
maining filamentous mass. 
On the Identity of Pinus Peuce, Griseb., of Macedonia, d 
the P. excelsa of the Himalaya Mountains. By J. D. HooKzn, 
M.D., V.P.B.S. & L.S. 
[Read March 3, 1864. } 
Ix 1839 Dr. Grisebach, now the eminent Professor of Botany in 
Göttingen, but then travelling on a scientific mission in Rumelia 
and the neighbouring countries, discovered a small forest of a 
very peculiar-looking five-leaved Pine, evidently new to Europe. 
The locality (a very confined one) was on Mount Peristeri, above 
Bitolia, in Southern Scardus (an eastern district of Macedonia 
bordering on Dalmatia), lat. 41° N., long. 21? E. There this Pine 
forms an interrupted wood of distant trees, growing in a granite 
soil, between the elevations of 2400 and 5800 feet (German), 
amongst a dense undergrowth of Oxycedrus and Juniper; only 
young cones were found (in July). The height of the tree 
N 2 
