PiNus. CONIFER.^. 227 



1. PINUS. Linn. ; Endl. gen. 1795. PINB. 



[Said to be derived from the Celtic word pin, or pen, signifying a (ra^ or rocky mountain, where many of the species 



delight to grow.] 



Sterile fl. in racemose aments. Stamens numerous, with short filaments : anthers 2-celled ; 



the connective scale-like. Fertile fl. in a more or less conical or cylindrical ament ; the 



scales usually adnate to the bracts. Cone formed of scales which are excavated at the 



base for the reception of the seeds, often mucronate below the tip. — Mostly trees. 



• PiNUS proper, Link- Sterile aments aggregated in a terminal cluster. Anlher-ceUs opening longitudinally. Scales of 

 the cone thickened at the tip, persistent, without bracts. Leaves evergreen, linear, 2,3 or 5 in a fascicle which is sur- 

 rounded at the base with a short scarious sheath. 



1. PiNus RESiNosA, Solaiicl. • Red Fine. 



Leaves in pairs, shorter than the cones ; cones ovate-conical, rounded at the base ; scales 

 dilated in the middle, unarmed. — Soland. in Ait. Keio. (ed. 1.) 3. p. 367 ; Lamb. Pin. p. 20. 

 t. 14 ; Pursh,fl. 2. p. 642 ; Torr. comjjend.p. 359 ; Beck, hot. p. 339 ; Hooh. fl. Bor.-Am. 

 2. p. 161 ; Loud. enc. tr. <^- shr. p. 972. P. rubra, Miclix. f. st/Iv. 2. t. 134. 



A tree 70 - 80 feet high, with a trunk 2 feet in diameter, and of nearly uniform diameter 

 for two-thirds of its length ; the bark of a brighter red than in any other Pine of the United 

 States. Leaves dark green, 5-6 inches long. Cones about 2 niches long, abruptly pointed 

 {MicJix.f.). 



Dry soils. Helderberg mountain {Dr. L. C. Beck). Yates county, (Dr. Sartwell). I have 

 not found this pine within the limits of our State. According to Michaux the wood is 

 compact, with a fine grain, and is heavy in consequence of the resinous matter with which it is 

 impregnated. It is highly esteemed for strength and durability, and is often employed for the 

 decks and masts of vessels. 



2. PiNus RiGiDA, Mill. Pitch Pine. 



Leaves in threes ; cones ovoid, mostly clustered in threes and fours, much shorter than 

 the leaves ; the scales terminated by a short acute reflexed point. — Mill. diet. no. 10 ; Michx. 

 f. sylv. 2. t. 144 ; Lamb. Pin. t. 16. 17 ; Pursh,fl. 2. p. 643 ; Ell. sk. 2. p. 634 ; Bigel.fl. 

 Bosl.p. 359 ; Beck, bot. p. 339 ; Darlingt. fl. Cest. p. 519 ; Loud. enc. tr. ^ shr. p. 977. 



A tree 30 - 50 feet high and a foot or more in diameter, with numerous branches ; the 

 bark thick, fissured and blackish. Leaves 2-4 inches long ; the sheath short and pale 

 brown. Sterile aments ovoid-oblong, clustered. Crest of the anther dilated, roundish. 

 Cones 2-4 inches long : scales cuneate-oblong, with a somewhat pyramidal summit, and a 

 rigid spreading or reflexed point. 



29 • 



