| Spruce pine | |
|---|---|
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Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Division: | Pinophyta |
| Class: | Pinopsida |
| Order: | Pinales |
| Family: | Pinaceae |
| Genus: | Pinus |
| Subgenus: | P. subg. Pinus |
| Section: | P. sect. Trifoliae |
| Subsection: | P. subsect. Australes |
| Species: | P. glabra |
| Binomial name | |
| Pinus glabra Walter | |
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| Natural range of Pinus glabra | |
Pinus glabra, the spruce pine, is a tree found on the coastal plains of the southern United States, from southern South Carolina south to northern Florida and west to southern Louisiana. This pine is a straight-growing, medium-sized species, attaining heights of 20–40 m.
The leaves are needle-like, in bundles of two, 5–8 cm long, slender (1 mm thick), and glossy dark green. The small, slender cones are 4–6 cm long, with weak prickles on the scales that are soon shed.[2]
Pinus glabra differs markedly from most other pines in that it does not occur in largely pure pine forests, but is typically found as scattered trees in moist woodland habitats in mixed hardwood forest. To be able to compete successfully in such habitats, it has adapted to greater shade tolerance than most other pines.[3]
Pinus glabra foliage and cone
Bark of mature Pinus glabra
Crown of mature Pinus glabra
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References
- ^ Farjon, A. (2013). "Pinus glabra". IUCN Red List of Threatened Species. 2013: e.T42364A2975443. doi:10.2305/IUCN.UK.2013-1.RLTS.T42364A2975443.en.
- ^ Moore, Gerry; Kershner, Bruce; Craig Tufts; Daniel Mathews; Gil Nelson; Spellenberg, Richard; Thieret, John W.; Terry Purinton; Block, Andrew (2008). National Wildlife Federation Field Guide to Trees of North America. New York: Sterling. p. 70. ISBN 1-4027-3875-7.
- ^ Kral, Robert (1993). "Pinus glabra". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). 2. New York and Oxford – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
External links
- Conifer Specialist Group (1998). "Pinus glabra". IUCN Red List of Threatened Species. 1998. Retrieved 12 May 2006.
- Kossuth, Susan V.; Michael, J. L. (1990). "Pinus glabra". In Burns, Russell M.; Honkala, Barbara H. (eds.). Conifers. Silvics of North America. Washington, D.C.: United States Forest Service (USFS), United States Department of Agriculture (USDA). 1 – via Southern Research Station (www.srs.fs.fed.us).
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