Definition that contains atkins
- poplar any of numerous trees of north temperate regions having light soft wood and flowers borne in catkins
- sallow any of several Old World shrubby broad-leaved willows having large catkins; some are important sources for tanbark and charcoal
- paper mulberry shrubby Asiatic tree having bark (tapa) that resembles cloth; grown as a shade tree in Europe and America; male flowers are pendulous catkins and female are urn-shaped followed by small orange-red aggregate berries
- european black alder medium-sized tree with brown-black bark and woody fruiting catkins; leaves are hairy beneath
- rhus aromatica sweet-scented sumac of eastern America having ternate leaves and yellowish-green flowers in spikes resembling catkins followed by red hairy fruits
- salix discolor small willow of eastern North America having greyish leaves and silky catkins that come before the leaves
- hamamelid dicot genus genus of mostly woody relatively primitive dicotyledonous flowering plants with flowers often unisexual and often borne in catkins
- amentiferae used in some classification systems for plants that bear catkins
- poplar tree any of numerous trees of north temperate regions having light soft wood and flowers borne in catkins
- family salicaceae two genera of trees or shrubs having hairy catkins: Salix; Populus