alder

alnus

black

bloom

blooming

blossom

bokeh

branches

buds

carr

catkin

catkins

close

detail

early

fertilization

flora

flower

flowers

forest

garden

grains

grassland

green

hanging

long

macro

male

nature

outdoors

outside

plant

pollen

pollination

purple

reproduction

season

seeds

sexual

spring

strobile

time

tree

twigs

vertical

wind

windpollinated

woods

yellow