Pinus durangensis
| Pinus durangensis | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Gymnospermae |
| Division: | Pinophyta |
| Class: | Pinopsida |
| Order: | Pinales |
| Family: | Pinaceae |
| Genus: | Pinus |
| Subgenus: | P. subg. Pinus |
| Section: | P. sect. Trifoliae |
| Subsection: | P. subsect. Ponderosae |
| Species: | P. durangensis
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| Binomial name | |
| Pinus durangensis | |
| |
| Natural range of Pinus durangensis | |
Pinus durangensis, the Durango pine, is a pine tree species endemic to the Sierra Madre Occidental mountain range of north-western Mexico.
This species is related to Pinus ponderosa (Ponderosa pine), and included in the same subsection Ponderosae.
Distribution
[edit]The tree is found from Chihuahua and Sonora, southwards through Durango and Jalisco, to Michoacán. It is a moderately high altitude species, growing at 1,500–2,800 metres (4,900–9,200 ft).
Description
[edit]Pinus durangensis is an evergreen tree reaching 25–40 metres (82–131 ft) in height, with a trunk up to 1 metre (3.3 ft) in diameter and a broad, rounded crown. The bark is thick, dark gray-brown, and scaly or fissured.[2]
The leaves are needle-like, dark green, five to seven per fascicle (mostly six, this high number unique in the genus), 14–24 cm long and 0.7-1.1 mm wide, the persistent fascicle sheath 1.5–3 cm long.[2]
The cones are ovoid, 5–9 cm long, green ripening brown, opening when mature in spring to 5–6 cm broad. The seeds are winged, 5–6 mm long with a 1.5-2.5 cm wing. Pollination is in late spring, with the cones maturing 20–22 months after.
References
[edit]
- ^ Farjon, A. (2013). "Pinus durangensis". IUCN Red List of Threatened Species. 2013: e.T42358A2974963. doi:10.2305/IUCN.UK.2013-1.RLTS.T42358A2974963.en. Retrieved 12 November 2021.
- ^ a b "Pinus durangensis / Durango pine". American Conifer Society. Archived from the original on 8 December 2022.
- Farjon, A. (2013). "Pinus durangensis". IUCN Red List of Threatened Species. 2013: e.T42358A2974963. doi:10.2305/IUCN.UK.2013-1.RLTS.T42358A2974963.en. Retrieved 12 November 2021.
- Earle, Christopher J., ed. (2018). "Pinus durangensis". The Gymnosperm Database.
- Farjon, A. & Styles, B. T. (1997). Pinus (Pinaceae). Flora Neotropica Monograph 75: 171-175.