MONOECIA. MONADEiPHlA. 223 



Order VIIL— MONADELPHIA. 



765. PINUS. L. (Pine Tree.) 



Masc. Calix 4.leave(i. Corolla none. Sta- 

 mina many. Anthers naked. Fem. Calix a 

 strobilus or cone,* scales 2-flowered. Corolla 

 none. Pistill l. tN^iit alated. 



Mostly tall resiniferous trees with verticillated branches', 

 leaves acerose and niif\;riT!ly slender, growing from 2 to 

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

 ciduous in Larix, solitary and distinct at the base in 

 Abies; aments conglomerated, terminal; cones solitary or 

 subverticillate, also terminal, 



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

 mits, angular and umbilicate. ^ 



Species. 1. P, inops, (Jersey Pine.) 2. resinoaa, 

 (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.) 

 7. pungem. (Table Mountain Pine.) Hitherto only met 

 with on the summits of the Catawba ridge, near the 

 sources of Catawba river; North Carolina. 8. Tada. (Old- 

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

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

 Canada to Carolina. 



1 1 Larix. Leaves fasciculated, deciduous. 

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



t tt Abies. Leaves solitary and distinct at the 

 base; scales of the cone even and attenuated. 



13. Balsamea. (Balsam Fir.) /3. Frasen. Ph. ^•. v. On 

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

 taxlfulia. 15. canadensis. (Hemlock Spruce.) 16. nigra. 

 (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. 



\ Primary leaves solitary and sessile, destitute of sheatheSj at 

 length succeeded by the oMinai-y foliage. 



