2 literature references for Pinus yunnanensis Franch.:

Author: Grimshaw, J. & Bayton, R.
Year: 2009
Title: New trees (recent introductions to cultivation)
Source: Kew Publishing, Royal Botanic Gardens, Kew
Author: Franch.
Year: 1899
Title:
Source: In: J. Bot. (Morot) 13 (8): 253.