Talk:Pinus sect. Trifoliae

Circumscriptions

Sect. Trifoliae Duhamel, 1755 [type: P. palustris Mill.]
According to Businsky (2008)

• Subsect. Australes Loudon, (1838) [type: P. australis F. Michx. = P. palustris Mill.]
• Subsect. Contortae Little et Critchf., (1966)
• Subsect. Leiophyllae Loudon, (1838)
• Subsect. Oocarpae Little et Critchf., (1966)
  

Note: Businsky excludes the Ponderosa and California Big Cone Pines placing them in Sect. Pseudostrobus

According to Hernandez-Leon et al., (2013)

• Subsect. Australes Loudon, (1838)
• Subsect. Contortae Little et Critchf., (1966)
• Subsect. Ponderosae Loudon, (1838)

According to Gernandt (2018)

• Subsect. Attenuatae Burgh, (1973)
• Subsect. Australes Loudon, (1838)
• Subsect. Contortae Little et Critchf., (1966)
• Subsect. Oocarpae Little et Critchf., (1966) Subsumed in Australes by author's 2005 paper, but distinct geographically and by cone morphology.
• Subsect. Ponderosae Loudon, (1838)

According to Jin et al. (2021)

• Subsect. Attenuatae Burgh, (1973)
• Subsect. Australes Loudon, (1838) s.l. inc. Oocarpae
• Subsect. Contortae Little et Critchf., (1966)
• Subsect. Ponderosae Loudon, (1838)
• Subsect. Sabinianae Loudon, (1838)

Andyboorman (talk) 17:34, 4 March 2023 (UTC)