Genus: ALNUS  Family: BETULACEAE Source: USDA, NRCS. 2009. The PLANTS Database (http://plants.usda.gov, 24 June 2009). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

Genera of BETULACEAE Select a genus and click on Ok 1) Alnus 2) Betula-Alnus 3) Duschekia 4) Betula 5) Carpinus 6) Corylus 7) Nothofagus 8) Ostrya

TAXON	DISTRIB.	IMAGES
Alnus cordata (Loisel.) Duby Views: 601.344 Tree - Perennial Italian alder
Alnus x fallacina Callier Views: 270.413 Tree - Perennial
Alnus glutinosa (L.) Gaertn. Views: 1321.03 Tree - Perennial European alder Synonyms: = Alnus alnus (L.) Britton
Alnus incana (L.) Moench Views: 1897.56 Tree, Shrub - Perennial gray alder
Alnus incana (L.) Moench ssp. incana (L.) Moench [excluded] Views: 234.99 - gray alder
Alnus incana (L.) Moench ssp. rugosa (Du Roi) R.T. Clausen Views: 336.278 Tree, Shrub - Perennial speckled alder Synonyms: = Alnus incana (L.) Moench var. americana Regel = Alnus rugosa (Du Roi) Spreng. = Alnus rugosa (Du Roi) Spreng. var. americana (Regel) Fernald
Alnus incana (L.) Moench ssp. tenuifolia (Nutt.) Breitung Views: 322.586 Tree, Shrub - Perennial thinleaf alder Synonyms: = Alnus incana (L.) Moench var. occidentalis (Dippel) C.L. Hitchc. = Alnus incana (L.) Moench var. virescens S. Watson = Alnus x purpusii Callier = Alnus tenuifolia Nutt.
Alnus japonica (Thunb.) Steud. Views: 293.585 - Japanese alder
Alnus maritima (Marsh.) Muhl. ex Nutt. Views: 590.641 Tree, Shrub - Perennial seaside alder Synonyms: = Alnus maritima (Marsh.) Muhl. ex Nutt. ssp. metoporina (Furlow) E. Murray = Alnus maritima (Marsh.) Muhl. ex Nutt. var. metoporina (Furlow) E. Murray = Alnus metoporina Furlow = Betula-Alnus maritima Marsh.
Alnus nepalensis D. Don Views: 263.957 Tree - Perennial Nepal alder
Alnus oblongifolia Torr. Views: 225.041 Tree - Perennial Arizona alder
Alnus pendula Matsum. Views: 259.335 -
Alnus rhombifolia Nutt. Views: 249.553 Tree - Perennial white alder Synonyms: = Alnus rhombifolia Nutt. var. bernardina Munz & I.M. Johnst.
Alnus rubra Bong. Views: 337.133 Tree - Perennial red alder Synonyms: = Alnus oregona Nutt. = Alnus oregona Nutt. var. pinnatisecta Starker
Alnus serrulata (Aiton) Willd. Views: 465.606 Tree, Shrub - Perennial hazel alder Synonyms: = Alnus incana (L.) Moench var. serrulata (Aiton) B. Boivin = Alnus noveboracensis Britton = Alnus serrulata (Aiton) Willd. var. subelliptica Fernald
Alnus trabeculosa Hand.-Mazz. Views: 182.577 -
Alnus viridis (Chaix) DC. Views: 2190.14 Tree, Shrub - Perennial green alder
Alnus viridis (Chaix) DC. ssp. crispa (Aiton) Turrill Views: 1098.95 Tree, Shrub - Perennial mountain alder Synonyms: = Alnus crispa (Aiton) Pursh = Alnus crispa (Aiton) Pursh var. elongata Raup = Alnus crispa (Aiton) Pursh var. mollis (Fernald) Fernald = Alnus x hultenii Murai p.p. = Alnus viridis (Chaix) DC. var. crispa (Aiton) House = Duschekia viridis (Chaix) Opiz p.p.
Alnus viridis (Chaix) DC. ssp. fruticosa (Rupr.) Nyman Views: 245.911 Shrub, Tree - Perennial Siberian alder
Alnus viridis (Chaix) DC. ssp. sinuata (Regel) A. L÷ve & D. L÷ve Views: 237.68 Tree, Shrub - Perennial Sitka alder Synonyms: = Alnus alnobetula (Ehrh.) K. Koch p.p. = Alnus crispa (Aiton) Pursh ssp. laciniata Hultén = Alnus crispa (Aiton) Pursh ssp. sinuata (Regel) Hultén = Alnus sinuata (Regel) Rydb. = Alnus viridis (Chaix) DC. var. sinuata Regel = Duschekia sinuata (Regel) Pouzar

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