Kohler's Medizinal-Pflanzen in naturgetreuen Abbildungen mit kurz erlauterndem Texte :.Gera-Untermhaus :Fr. Eugen Kohler,[1883-1914].biodiversitylibrary.org/page/303574
2010.04.09 Lower Austria, district Neunkirchen, Rax northern flank/Wachthttlkamm (~1080 m AMSL).In this habitat black and Scots pine grow next to each other (which one doesn't see too often in natural habitats, usually only one or the other is present).Here you can compare excellently habitus of both species: P. sylvestris forming more or less a cone while P. nigra does not form a shape with a sharp "peak" but rather has a "flat roof", so to speak; also typically P. nigra twigs form "storey-like" layers of branches which often are almost in right angles to the stem - and which you usually don't see with P. sylvestris.
2011-02-06 Vienna XXII. district (Lobau national park 155 m AMSL).Pines aren't native to Lobau (or very marginally at most); they've been planted on some of the dryer places - and they still remain there. Mostly however you see P. nigra; this occurrence of P. sylvestris is a rarer one.German name: Rot-Fhre
2011-02-06 Vienna XXII. district (Lobau national park 155 m AMSL).Pines most likely aren't native to Lobau, but they've been planted on some of the dryer places - and they still remain there. Mostly however you see P. nigra; this occurrence of P. sylvestris is a rare one.German name: Rot-Fhre