SYNOPSIS OF THE FLORA OF COLORADO. 129 
mentose; nectary somewhat cup- i ia surroundiig:the base of the 
Besale and often exceeding it; style very short or none; stigmas 2-cleft, 
brown, divaricate; leave s 69! fone ng, oblong or silbyr bic cular, mostly 
rounded at the apex, mantons beneath, reticulately veined, entire, ob- 
tuse at base or subattenuate into a long and slender petiole: sterile 
aments 2-4” long cad very ri flowere ed; fertile aments also short, 
3-6" long, de nsely flowered, on lon ae peduncles.—Alpine, Ha Ud 
_ Harbour, 521. Sangre de Oras Pans! Bre ndegee 
POPULUS TREMULOIDES, Mx. Denk as Guiting Asp.” and very —~ 
“ae pe middle elevations. Hall & Harbour, 527. South Park, Coul- 
ter. . Smi 
OPULUS BALSAMIFERA, L., var. CANDICANS, Gr.—Commonly called 
stalin ” Hall & Harbour, 526; Dr. Smith. Chicago Lakes, ie 
Vor . ANGUSTIFOLIA, Watson. King’s Rep., vol. 5,327. (P. an iit: ~ 
folia, James. Branches terete, glabrous; leaves ovate-lanceolate, a 
uate at base, acute, glabrous, crenate-ser rrate.-—Common along the 
Phe Hall & Harbour, 525. Upper Arkansas, Porter. Canby. 
LU. rir eri: ‘Ait: —Very abundant along the Platte near — 
Reaver Dr. Smi 
CONIFER. 
PINUS ConTORTA, Dougl. DC. Prod., 16, 2d pt., p. 381. A low tree, 
109-309 high; bud- scales lanceolate, acute, ’ sublacerate; sheaths short ; 
leaves in pairs, 1/-2 , humerous, rigid, erect-s reading, semi-terete 
rea deeply indicted, mucror nate end subacute, scarcely roughish on 
vertic 0-15" w 
as amidal, 4-sided summit, the transverse ridge acute, mucronate with 
a deciduons, straightish or ineurved s spite. . Newberry im Pacif. ; 
Rep. ¢. vol. 6, p. . 3, pl. 5. ae re 
_ Var. LATIFOLIA, Eng. Mountain form, ins 29° high ; anche short 
and few, recurved. with age; foliage sparse, often profusely cone-bear- 
mg; allied to the eastern serub-pine, He Ati which if closely resem- 
bles; known as “Red Pine.” Parry remarks: “It is quite abundant on _ 
the crest and slopes of dry subalpine ied: forming the principal part 
-0f the forest there and extending to near the snow-line; a symmetrical 
tree of rapid growth, with slim and tapering trunk a foot in diameter, a 
an oe ad Spe -brown. bark, gene in thin scales, and tough but 
a hich is liable to warp, and rarely cut into boards.” 
eu “atone of the : Holy Cross, Coulter. Twin Lakes, Porter 
_Prxus aincuenatie Dou gl. DO. Prod.,l. ¢, p. 399. Tall, with wide- 
i 
t the en . 
; bud- es TAaiSbOIAGS: acuminate , fim briate-ciliate on the mar- 
- gin; sheaths rather long; leaves in threes, r ather long, 4/-10’, and Sige 
~ broad, clustered at the ‘ends of the stout hipid branchlets, seabro 
_ the margin gin, rather sharply mucronate ; male aments several, fascicled 
heads, long-cy lindric al, obtuse, straight or curved ; antl eriferous 
— Draets suborbieular , crenate-dentate; cones 3-4, | ubsessile, deka 
straight orconie-cylindrie, 3-6" lon ng, 14/-2' wide; seales 1/13’ long, 6/’— 
Wide, the subrhombie summit elevated, radiately cracked, the trans- 
rse ridge acute, the mucro stout, sharp and recurved ; bracts persist- 
, thickened; seed oval, 3-5’ long, the wing oblong, obtuse, 1’ long. 
age sganoteinak tree, reaching a height of 70 to 100 feet, with a 
