= 
% 
OF THE GENUS PINUS. 623 
Parlatore recognizes a var. 6. Hamiltoni with cylindric cones ; 
var. a. minor with smaller cones; var. 6. prolifera, a malforma- 
tion with cones in dense clusters ; and var. y. Lemoniana above- 
mentioned. 
67. Pinus punaENs, Lambert, in Konig § Sims, Annals of 
Botany, ii. (1806) p. 199; Michaux; Sargent, Silva, xi. (1897) 
p. 135 ; Britton & Brown, Illustrated Flora, i. p. 50, fig. 117 ; 
Beissner, Handbuch, p. 214, fig. 
A species native of the Appalachian mountains, extending also 
to Virginia southwards and to Pennsylvania and New Jersey 
northwards. 
The glabrous shoots are clothed to the base with tufts of 
foliage. The leaves are 3-5 cent. long, boat-shaped in section, 
flattish above, with a thick kypoderm projecting into the meso- 
phyll in wedge-shaped masses, and cortex-cells with infolded 
walls. The resin-canals are median and surrounded by 
stereome-cells. The endoderm consists of 70 to 80 oblong, 
thick-walled cells. The meristele is elliptical, depressed on the 
upper surface. The fibro-vascular bundle is branched, the two 
branches widely divergent at the base (see also Coulter & Rose, 
p- 308). The cones are sessile, spreading, 7-S cent. long, oblong- 
conic. Cotyledons 7-8. The apophyses are somewhat four-— 
sided, dilated upwards, but taper gradually into a stout subulate, 
often reflexed, point. 
68. P. virernrana, herb. Linn. ; Miller, Dict. (1768); Sargent, 
Silva, xi. (1897) p. 123, tab. 581; Britton § Brown, IIlust. 
Flora, i. (1896) p. 452, fig. 115. 
P. inops, Aiton, Hort. Kew. iii. p. 867 (1789). 
P. Royleana, Jameson. 
A well-known American species, extending near the coast 
from New York to Georgia. 
The leaves vary from 2-8 cent. in length. In section they 
are boat-shaped, with a double layer of hypoderm ; the meso- 
pbyli-cells have infolded walls; the resin-canals are median 
and surrounded by a sheath of stereome. The endoderm- 
cells are about 60 in number, thickened on the outer wall. 
The meristele is elliptic in section, with a branched fibro- 
vascular bundle, the divergent branches being separated by 
cellular tissue. The buds are ovoid-oblong, acute; the male 
flowers in dense spikes, the cones shortly stalked, at first erect, 
but afterwards deflexed, 5-7 cent. long, oblong-conic; apophysis 
LINN. JOURN,—BOTANY, VOL. XXXV. BA 
