Hybridization in pines
Both naturally and artificially occurring pine species [Pine|] can hybridize, combining their genetic material and sometimes creating hybrids that can be more or less vigorous than their parent species. An example of a naturally occurring hybrid pine is Pinus × sondereggeri, a naturally occurring cross between loblolly pine and longleaf pine. An example of the many artificial hybrids is Pinus lambertiana × ''P. armandii.''
Subgenus ''Pinus''
Includes both natural and artificial pine hybrids.Subsection ''Pinus''
- Pinus nigra × P. resinosa – Austrian pine × red pine
- Pinus densiflora × P. nigra ''– Japanese Red pine × Austrian pine
- Pinus × densithunbergii, Pinus densiflora × P. thunbergii –'' Japanese Red pine × Japanese black pine
- Pinus × neilreichiana, Pinus nigra × P. sylvestris – Neilreich pine
- Pinus × rhaetica, Pinus mugo × P. sylvestris – Rhætic pine
Subsection ''Ponderosae''
- Pinus ponderosa var. ponderosa × P. arizonica – Ponderosa pine × Arizona pine
- Pinus ponderosa var. ponderosa × P. montezumae – Ponderosa pine × Montezuma pine
- Pinus ponderosa var. scopulorum × P. montezumae – Rocky Mountain ponderosa pine × Montezuma pine
- Pinus engelmannii × P. montezumae – Apache pine × Montezuma pine
- Pinus jeffreyi × P. montezumae – Jeffrey pine × Montezuma pine
- Pinus ponderosa var. ponderosa × P. engelmannii – Ponderosa pine × Apache pine
- Pinus engelmannii × P. arizonica – Apache pine × Arizona pine
- Pinus engelmannii × P. ponderosa var. scopulorum – Apache pine × Rocky Mountain ponderosa pine
- Pinus jeffreyi × P. ponderosa var. ponderosa – Jeffrey pine × ponderosa pine
- Pinus jeffreyi × P. ponderosa var. scopulorum – Jeffrey pine × Rocky Mountain ponderosa pine
- Pinus jeffreyi × P. ponderosa var. washoensis – Jeffrey pine × Washoe pine
- Pinus. ponderosa var. washoensis × P. ponderosa var. ponderosa – Washoe pine × ponderosa pine
- Pinus. ponderosa var. washoensis × P. ponderosa var. scopulorum – Washoe pine × Rocky Mountain ponderosa pine
- Pinus jeffreyi × P. coulteri – Jeffrey pine × Coulter pine
Subsection ''Contortae''
- Pinus × murraybanksiana, Pinus contorta var. murrayana × P. banksiana – Murraybanks pine
- Pinus contorta var latifolia × P. banksiana – Rocky Mountain Lodgepole Pine × Jack Pine
- Pinus virginiana × P. clausa – Virginia pine × Sand pine
Subsection ''Australes''
- Pinus × sondereggeri, Pinus palustris × P. taeda – Sonderegger's pine
- Pinus elliottii × P. palustris – Slash pine × longleaf pine
- Pinus elliottii × P. taeda – Slash pine × loblolly pine
- Pinus echinata × P. elliottii – Shortleaf pine × slash pine
- Pinus echinata × P. taeda – Shortleaf pine × loblolly pine
- Pinus pungens × P. echinata – Table Mountain pine × shortleaf pine
- Pinus rigida × P. echinata – Pitch pine × shortleaf pine
- Pinus x rigitaeda, Pinus rigida × P. taeda – Pitlolly pine
- Pinus rigida × P. serotina – Pitch pine × pond pine
- Pinus patula × P. greggii – Mexican weeping pine × Gregg pine
- Pinus patula × P. radiata – Mexican weeping pine × Monterey pine
- Pinus attenuata × P. radiata – KMX pine
- Pinus attenuata × P. muricata – Knobcone pine × bishop pine
Subgenus ''Strobus''
Subsection ''Cembroides''
- Pinus quadrifolia × P. monophylla subsp. californiarum ''– Parry pinyon × California single-leaf pinyon
- Pinus quadrifolia × P. monophylla – Parry pinyon × single-leaf pinyon
- Pinus monophylla × P. edulis'' – Single-leaf pinyon × Colorado pinyon
Subsection ''Strobus''
- Pinus pumila × P. sibirica – Japanese stone pine × Siberian pine
- Pinus × hakkodensis, Pinus parviflora var. pentaphylla × P. pumila – Hakkoda pine
- Pinus × holfordiana, Pinus ayacahuite × P. wallichiana – Holford pine
- Pinus × hunnewellii, Pinus parviflora × P. strobus – Hunnewell's white pine
- Pinus monticola × P. parviflora – Western white pine × Japanese white pine
- Pinus lambertiana × P. armandii – Sugar pine × Armand pine
- Pinus lambertiana × P. koraiensis – Sugar pine × Korean pine
- Pinus monticola × P. strobiformis – Western white pine × southwestern white pine
- Pinus monticola × P. flexilis – Western white pine × limber pine
- Pinus monticola × P. strobus – Western white pine × eastern white pineFile:Pinus_pumila_x_pinus_sibirica_cross_section.png|thumb|Japanese stone pine cone and Japanese stone pine × Siberian pine cone . Anatomy of the cones and visible morphological differences in the hybridized cone
- Pinus monticola × P. peuce – Western white pine × Balkan pine
- Pinus peuce × P. strobus – Balkan pine × eastern white pine
- Pinus peuce × P. parviflora – Balkan pine × Japanese white pine
- Pinus flexilis × P. wallichiana – Limber pine × Himalayan pine
- Pinus flexilis × P. strobus – Limber pine × eastern white pine
- Pinus flexilis × P. ayacahuite – Limber pine × Mexican white pine
- Pinus ayacahuite × P. strobus – Mexican white pine × eastern white pine
- Pinus × schwerinii, Pinus strobus × P. wallichiana – Schwerin's white pine
- Pinus monticola × P. wallichiana – Western white pine × Himalayan pine
- Pinus cembra × P. sibirica – Swiss stone pine × Siberian pine
- Pinus cembra × P. albicaulis – Swiss stone pine × whitebark pine
- Pinus albicaulis × P. flexilis – Whitebark pine × limber pine
- Pinus sibirica × P. cembra – Siberian pine × Swiss stone pine
- Pinus sibirica × P. koraiensis – Siberian pine × Korean pine
- Pinus armandii × P. koraiensis – Armand pine × Korean pine
- Pinus strobus × P. ayacahuite – Eastern white pine × Mexican white pine