Ng 
NL 
a) ee 
OF THE GENUS PINUS. 631 
Pinus leucosperma, Muximowicz, in Bull. Acad. St. Pétersb. 
t. xxvii. p. 425 (1881).—A native of Kansu, Terra tangutorum, 
collected by Przewalski in 1872. Of this two pairs of leaves 
have been kindly furnished by M. Fischer de Waldbeim. The 
leaves are in twos, surrounded at the base by a short sheath, 
semicylindric, channelled above, faintly denticulate, stomatiferous 
on all sides. The length is 8 cent. in the one case, 11 cent. in 
the other. Beneath the epiderm are two layers of hypoderm 
with additional stereome-cells in the corners. The cells of the 
mesophyll are plicated, and the numerous resin-canals, each 
surrounded by stereome, are subepidermal. The meristele is 
elliptic in section, with an endoderm of 40-50 cells. The two 
branches of the fibro-vascular bundle are widely divergent. In 
structure it appears like P. silvestris. 
P. eldarica, Medwejew, in Act. Hort. Tiflis (1902), vi. 1. p. 2.— 
Allied to P. bruttia and P. halepensis, but said to differ from both. 
A native of Transcaucasia. The figure shows sessile, ascending 
ovoid-conic cones. I am indebted to Mr. Hemsley for ealling 
my attention to the figure and description of the tree. 
P. funebris, Komarow, in Act. Hort. Petrop. xx. (1901), cited 
in Beissner, Mittheil. d. Deutschen botanischen Gesellschaft, as 
probably a form of P. silvestris. 
P. apulcensis, Lind. ex Endl. Synops. p. 153. 
InpeEx To Sreectric NaMES AND SYNONYMS. 
No. No. 
albicaulis 2... ......0.. 005. 18 | cembroides .........0.05008 16 
apulcensis .....0.....0., p- 631 | chihuahuana .........-+-+: 24 
aistata oo. eee QL) clausa ........ eee eee eee ees 65 
arizonica 6... ee AT | contorta ..... 6c eee eee eee 73 
Armandi........0......... 12 Coulteri ..........000 ee ee 34 
attenuata (tuberculata)...... 32 cubensis [see Postscript] .... 48 
Gustralis oo. ccs 50 densiflora .....-e seer reer 62 
Ayacuite.... 0, 5 divaricata. ........00- 00008 63 
bahamensis [see Pestscript}.. 48  Donnell-Smithil.....----+-++ 41 
Balfouriana................ 20 echinata .....-.--.0500 008? v0 
Banksiana ....0..00 00... 63 edulis ..... 5.02: seer 7 
bruttia 54. eldarica ....----2 20ers p. 631 
Bungeana .....0000 02... 22 excelsa.. sc... eee ete 10 
canariensis ....0.0...0..... 29 filifolia..... 6... cece eee eee 44 
\ “4: +3) 
Cembra 2.3... ee, 3 fexilis so... cece eee eee I 
