AMERICAN CHERRY 



Physical Characters, etc. Recorded dry-weight 33^-49 Ibs. 

 per cu. ft. Hardness Grade 7, compare Alder or English Birch. 

 Smell or taste none. Burns well and quietly : embers do not 

 glow in still air : the flame leaves the charred stick unconsumed. 

 Solution with water or alcohol light yellow. 



Grain. Fine, smooth, close and even. Surface of the ground 

 somewhat lustrous : the pores usually dull. 



Bark. Shining, laminated, peeling in thin sheets like Birch : 

 lenticels prominent. 



Uses, etc. Turnery, tobacco-pipes, etc. : not durable : splits 

 easily and cleanly. 



Authorities. Nordlinger (86), vol. iii. p. 71. Schwartz (106), 

 p. 481. Hartig (42). Mathieu (69), p. 139. 



Colour. Heart-wood uniform light or dark brown, well denned 

 from the reddish-white sap-wood. 



Anatomical Characters. Transverse Section : 



Pores. Need lens, size 5, fine, decreasing uniformly from the 

 Spring to the Autumn wood : uniformly crowded throughout 

 the ring : very numerous, 100-150 per sq. mm. : in irregular 

 groups of from 2 to sometimes 13 pores, occasionally branched. 



Rays. Readily visible when moistened, size 3-4, fine, uni- 

 form : equidistant : direct : long but tapering gradually at both 

 ends scarcely denser than the ground-tissue : numerous, 3-6 

 per mm. : more than a pore- width apart. 



Rings. Clear through a dark brown, narrow line of Autumn 

 wood adjoining the porous Spring wood or pore-ring : contour 

 well-rounded. 



Soft-tissue. In patches and lines here and there. 



Flecks. Singly near the pith : few : clear, narrow lines. 



Pith. Rounded or lobed, about o'5-ro mm. diameter. 



Radial Section. Pores clearly visible though minute, fine 

 lines : dark brown or red. Rays inconspicuous lines, 0*5 mm. 

 high with little contrast except in the transparent section. Rings 

 very clear. 



Tangential Section. As the Radial, but the rays are scarcely 

 perceptible with lens : almost colourless fine lines. 



Type specimens from trees known before felling. 



No. 92. AMERICAN CHERRY. Prunus sero- 

 tina. Ehrh. (not of Poir., Roth., 



or Schur). 

 PLATE VII. FIG. 61. 



Natural Order. Rosaceae. 



Synonyms. P. salicifolia. H. B. and K. P. virginica. Duroi. 

 Padus serotina. Borck. Cerasus serotina. Loisel. (not of Hook.). 



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