Catkins on a swamp white oak (Quercus bicolor). Catkins consist of many tiny petal-less flowers clustered around an axial system. These release millions of pollen grains, which are carried on the wind to pollinate female flowers. The swamp white oak is native to Eastern and Mid-Western North America and is an important source of timber.
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Details
Creative#:
TOP10176925
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
N/A
Property Release:
N/A
Right to Privacy:
No
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