Pinus mugo (Mugo pine): Leaves
		The stout, 1.5- to 3-inch-long needles occur in fascicles of 2 and are rigid and curved, with the tips ending in short, blunt, horny points. The basal sheath is 0.6 inches long. Needles are dark green and both surfaces have fine, white stomatic lines. Needles persist for 5 years or more, often turning yellow-green in winter, particularly at the tips.