MONOECIA. MONADELPIIIA. 223 



Order VIII.— MONADELPHIA. 



765. PINUS. Z. (Pine Tree.) 



Masc. Calix 4-leaved. Corolla none. Sta^ 

 mina many, Anthers naked. Fem. Calix a 

 strobilus or cone; scales 2-llowered. Corolla 

 none. Pistill l. JWt alated. 



Mostly tall resiniferous trees with verticillated branches; 

 leaves acerose and filifirmly slender, growing from 2 to 

 5 in the same short cylindric sheath; fasciculated and de- 

 eiduous in Larix, solitary and distinct at the base in 

 Abies; aments conglomerated, terminal; cones solitary or 

 sabverticillate, also terminal, 



t PiNus. Scales of the cone thickened at the sum- 

 mits, angular and umbilicate. :j: 



Species. 1. P. inops. (Jersey Pine.) 2. resinosa. 

 (Pitch Pine.) o, Banksiana, (Scrub Pine, Grey Pine.) 

 A northern species. 4. variabilis. (Yellow Pine.) 5. ri- 

 gida. (Black or Pitch Pine.) 6. serotina. (Pond Pine.) 

 T.pnn^ens. (Table Mountain Pine.) Hitherto only met 

 with on the summits of the Catawba ridge, near the 

 sources of Catawba river; North Carolina. 8. T<eda. (Old- 

 field Pine.) 9. palustris. (Long-leaved or Yellow Pitch 

 Pine.) 10. Strobus. (White or Weymouth Pine )— From 

 Canada to Caiolina. 



t t Larix. Leaves fasciculated, deciduous. 

 11. pendula. 12. microcarpa. (American Larch.) 



t tt Abies. Leaves solitary and distinct at the 

 fcase; scales of the cone even and attenuated. 



13. Balsamea. (Balsam Fir.) ^. Fraseri. Ph. v. v, Oa 

 the summit of the Catawba ridge, North Carolina. 14. 

 taocifolia. 15. canadensis, (Hemlock Spruce.) 16. fiigra. 

 (Black Spruce.) 17. rubra. (Red Spruce.) 18. alba.^ 

 (White Spruce.) 



A genus consisting of near 40 species, principally indi- 

 genous to Europe and North America; there are also spe- 

 cies in Barbary, the Levant, India and China. 



4 Primary leaves solitary and sessile, destitute »f sheathes, at 

 length 6ucQ«eded by the ordinary foliage. 



