Pinus heldreichii

Pinus heldreichii (synonym P. leucodermis; family Pinaceae), or Bosnian pine, is a species of pine native to mountainous areas of the Balkans and southern Italy. It can be found in the mountains of Bosnia, southwestern Bulgaria, Albania, the Republic of Macedonia, Serbia, northern Greece (Valia Kalda, Smolikas and Vasilitsa, Mount Olympus and in other high mountains), and locally in southern Italy (it is the symbol of the Pollino National Park), growing at 1,500–2,500 m (4,900–8,200 ft) altitude. It reaches the alpine tree line in these areas. It is an evergreen tree up to 25–35 m (82–115 ft) height, and 2 m (6 ft 7 in) trunk diameter.

It is a member of the hard pine group, Pinus subgenus Pinus, with leaves ('needles') in fascicles (bundles) of two, with a persistent sheath. They are 4.5–10 cm (1.8–3.9 in) long and 1.5–2 mm (0.059–0.079 in) thick. Cones are 5–9 cm (2.0–3.5 in) long, with thin, fragile scales; they are dark blue-purple before maturation, turning brown when ripe about 16–18 months after pollination. The 6–7 mm (0.24–0.28 in) long seeds have a 2–2.5 cm (0.79–0.98 in) wing and are wind-dispersed.