出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/07/05 02:47 UTC 版)
The Pitch Pine, Pinus rigida, is a small-to-medium sized (6-30 m) pine, native to eastern North America. This species occasionally hybridizes with other pine species such as Loblolly Pine (P. taeda), Shortleaf Pine (P. echinata), and Pond Pine (P. serotina); the last is treated as a subspecies of Pitch Pine by some botanists.