According to our preliminary investigation, the hosts on which U. longissima grows belong to 11 families 17 genera 18 species, mainly Abies georgei .

• 其生长基物种类繁多,经调查初步确定长松萝着生基物分属11科17属18种,但主要以急尖长苞冷杉(Abies georgei)为主要着生基物。