| 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 |
| Binomial name | |
| Pinus durangensis | |
 | |
| Natural range ofPinus durangensis | |
Pinus durangensis, theDurango pine, is apine tree speciesendemic to theSierra Madre Occidentalmountain range of north-western Mexico.
This species is related toPinus ponderosa (Ponderosa pine), and included in the same subsection Ponderosae.
The tree is found fromChihuahua andSonora, southwards throughDurango andJalisco, toMichoacán. It is a moderately high altitude species, growing at 1,500–2,800 metres (4,900–9,200 ft).
Pinus durangensis is anevergreentree 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. Thebark is thick, dark gray-brown, and scaly or fissured.[2]
Theleaves areneedle-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]
Thecones are ovoid, 5–9 cm long, green ripening brown, opening when mature in spring to 5–6 cm broad. Theseeds 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.
