| alnus | (n) alders, Syn. genus Alnus |
| common alder | (n) medium-sized tree with brown-black bark and woody fruiting catkins; leaves are hairy beneath, Syn. Alnus vulgaris, Alnus glutinosa, European black alder |
| green alder | (n) North American shrub with light green leaves and winged nuts, Syn. Alnus veridis crispa, Alnus crispa |
| green alder | (n) shrub of mountainous areas of Europe, Syn. Alnus veridis |
| grey alder | (n) native to Europe but introduced in America, Syn. gray alder, Alnus incana |
| red alder | (n) large tree of Pacific coast of North America having hard red wood much used for furniture, Syn. Oregon alder, Alnus rubra |
| seaside alder | (n) shrub or small tree of southeastern United States having soft light brown wood, Syn. Alnus maritima |
| smooth alder | (n) common shrub of the eastern United States with smooth bark, Syn. Alnus serrulata, hazel alder |
| speckled alder | (n) common shrub of Canada and northeastern United States having shoots scattered with rust-colored down, Syn. Alnus rugosa |
| white alder | (n) tree of western United States, Syn. mountain alder, Alnus rhombifolia |
| 赤杨 | [chì yáng, ㄔˋ ㄧㄤˊ, 赤 杨 / 赤 楊] alder tree (genus Alnus) #200,112 [Add to Longdo] |
| 普通赤杨 | [pǔ tōng chì yáng, ㄆㄨˇ ㄊㄨㄥ ㄔˋ ㄧㄤˊ, 普 通 赤 杨 / 普 通 赤 楊] alder tree (Alnus glutinosa) [Add to Longdo] |
| 桤树 | [qī shù, ㄑㄧ ㄕㄨˋ, 桤 树 / 榿 樹] long peduncled alder (Alnus cremastogyne); Alnus trebeculata [Add to Longdo] |
| 灰赤杨 | [huī chì yáng, ㄏㄨㄟ ㄔˋ ㄧㄤˊ, 灰 赤 杨 / 灰 赤 楊] grey alder (Alnus incana); speckled alder [Add to Longdo] |
| 红桤树 | [hóng qī shù, ㄏㄨㄥˊ ㄑㄧ ㄕㄨˋ, 红 桤 树 / 紅 榿 樹] red alder (Alnus rubra) [Add to Longdo] |
| 绿赤杨 | [lǜ chì yáng, ㄌㄩˋ ㄔˋ ㄧㄤˊ, 绿 赤 杨 / 綠 赤 楊] green alder (Alnus viridis) [Add to Longdo] |