i 
OF THE GENUS PINUS. 611 
\ 
is elliptic in section, with a branched fibro-vascular bundle, and 
an epiderm-layer of 20-830 cells. 
The cones are 6-7 cent. long, cylindric-oblong, apophysis 
convex with radiating lines, umbo rhomboidal depressed. 
It was originally described from Sumatra in Junghuhn & De 
Vriese, Plant. Noy. Ind. Batav. ii. p. 5, and has since been found 
in Borneo and the Philippines. It is said also to occur at 
elevations of from 1700-5000 ft. in the Shan States. 
56. Pinus Massonrana, Lambert, Pinetum, ed. i. (1803), t. 12 ; 
Pin. ed. 2, p.16, t.8; Parlatore, in DO. Prod. xvi. p. 389. 
P. sinensis, Lambert. 
This was first made known by a drawing taken froma plant in 
the Banksian Herbarium “ brought by Mr. Francis Masson 
from the Cape.” 
The tree is a native of China, and is very distinct in 1ts charac- 
teristics. The leaves are in pairs, very long and slender. In 
section they are semiterete or somewhat elliptical, concave on the 
ventral side, with one row of hypoderm-cells beneath the epi- 
dermis. The resin-canals are numerous beneath the margin. of 
the leaf, each is surrounded by a sheath of stereome-cells. The 
endoderm consists of about 30-40 cells. The meristele is elliptic 
in section, and has a branched fibro-vascular bundle. ‘The 
mesophyll is unusually thin, consisting of only two layers of 
cells outside the endoderm. 
The P. Massoniana of Siebold and Zuccarini has been referred 
by Purlatore to P. Thunbergii. ; 
Germinating seedlings observed at Kew showed a simple 
radicle, an erect caulicle reddish in colour, 6 cotyledons 13 in. 
long, linear. Primordial leaves linear, about the same lengtn as 
the cotyledons, remotely serrulate, with stomata on the upper 
surface. The primary stem is glaucous, ridged and furrowed °F 
fluted from the “ decurrence ” of the primordial leaves. Untor- 
tunately it is not certain whether these seedlings were those 
of the true Massoniana or whether, as is most probable, they 
belonged to P. Thunbergii. 
57. P.monrawa, Miller,Gard. Dict. ed. viii. (1768); Willkomm, 
Forstliche Flora (1887), p. 209 ; Beissner, Handbuch d. Nadelholz- 
kunde (1891), p. 233; Kent, in Veitch’s Manual, ed. 2 (1900), 
