Pinus palustris Mill. - syn.Pinus australis F. Michx.; Pinus longifolia Salisb. - Pinaceae
longleaf pine, southern yellow pine, Sumpfkiefer
Evergreen tree, native to southeastern and southern North America; leaves (2)-3 per fascicle, 20-45cm long, persisting 2 years; pollen cones 30-80mm, purplish; seed cones ovoid-cylindric when open, 15-25cm, dull brown, maturing in 2 years. „Pinus palustris is fire successional, with a deep taproot and a definite grass stage. It is a valued species for lumber and pulpwood and was once important for naval stores (e.g., turpentine, pine oil, tar, pitch).“
The essential oil of fresh needles and twigs, collected by steam distillation, consists mainly of β-pinene (32-50%). Other compounds present are germacrene-D (17.6%), (-)-camphene (14%), (-)-α-pinene (2-9%), α-terpineol (8%), δ-cadinene (5.1%), limonene (up to 5%), α-cadinol (4%), caryophyllene (3.8%) and other mono- and sesquiterpenes.
[Pini aetheoleum (Kiefernnadelöl aus Pinus palustris), Hagers Handbuch der Pharmazeutischen Praxis, Springer 2010]
Lambert, A.B., Description of the genus Pinus and some other remarkable plants, 2nd ed., vol. 1: t. 20 (1890) [Franz Bauer]