speckled alders spread their seed through cone-like structures

alder seed goldfinch catkins food small cones female seeds nature botanical alnus glutinosa cone fruit leaf botany green flora common fall light water loss principal producer wet habitats plant life black spring flowering male reproductive part sunlight growth european background leaves hard wood branch outdoor bright close photosynthesis tree stomata carbohydrates capillarity seasonal nutrients structure speckled alders spread their through conelike structures