122. Pixus CLAUSA SAND PINE, SCRUB PINE. 49 



PHYSICAL PROPERTIES. Wood heavy, rather soft, not strong, com- 

 pact, very resinous and of a brownish-orange color, with abundant yel- 

 lowish-white sap-wood. Specific Gravity, 0.7944; Percentage of Ash, 

 0.17; Relative Approximate Fuel Value, 0.7928; Coefficient of Elasticity, 

 116957; Modulus of Rupture, 1164; Resistance to Longitudinal Pressure, 

 505; Resistance to Indentation, 296; Weight of a Cubic Foot in Pounds, 

 49.49. 



USES. The wood of this tree is considered of inferior quality and not 

 much used; occasionally for lumber for general construction purposes. 



MEDICINAL PROPERTIES. Not recognized in medicine though its 

 pitch posesses the properties common to the genus. 



122. PINUS CLAUSA, VASEY. 

 SAND PINE, SCRUB PINE. 



Ger., Sand-Fichte; Fr., Pin sablonneaux; Sp., Pino de arena. 



SPECIFIC CHARACTERS. Leaves 2-3 in. long, slender, arranged in pairs with short 

 sheathes in. or slightly more in length. Fruit a narrow pyramidal cone 2-2^ in. 

 in length and (when closed) broadest near the rounded base where it is to 1 in. thick, 

 nearly sessile, spreading or reflexed, often in pairs or in whorls of three upon the 

 branchlets, scales ronnded and thickened at the apex and armed with a long slender 

 weak prickle which soon breaks off, however leaving only its prominent wide base. 

 The cones when fully expanded are oblong-ovoid and slightly oblique. 



(The specific name, clausa, is the Latin for closed, alluding to the long time the 

 cones remain closed.) 



This tree rarely attains the dimensions of 80 ft. (24 m. ) in hight with 

 a trunk 30 in. (0.75 in.) in diameter, invested in a brown bark, checked 

 longitudinally into loose scaly ridges. Growing as it does near the sea 

 and in localities exposed to the sea- winds it is often much distorted and 

 of small stature. 



HABITAT. Florida along the Gulf coast from Pensacola to Charlotte 

 Harbor, and along the coast a little distance near St. Augustine, growing 

 on the very barren sand-dunes and ridges, soil which will hardly support 

 any other tree. 



PHYSICAL PROPERTIES. Wood light, soft, not strong, easily worked 

 with numerous resin-passages and close grain. It is of a brownish-orange 

 color with abundant creamy white sap-wood. Specific Gravity 0.5576; 

 Percentage of Ash, 0.31; Relative Approximate Fuel Value, 0.5559; Co- 

 efficient of Elasticity, 54295; Modulus of Rupture, 502; Resistance to 

 Longitudinal Pressure, 377; Resistance to Indentation, 131; Weight of a 

 Cubic Foot in Pounds, 34.75. 



USES. Wood generally considered valueless, but it certainly possesses 

 properties which would recommend its use for lumber for general con- 

 struction purposes, etc. 

 7 



