Freshly matured samaras of A. morrisonense were collected from
Tsuifeng at an elevation of 2400 m, Nanto County, Central Taiwan
(240602000N, 1211101300E) during early November 2011 and late
December 2014. All studies, except the experiment on effects of
exogenous GA3 and GA4 on germination were conducted using
seeds collected in 2011