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The Botanical System of the Plants
Das Botanisches System der Pflanzen
Friedrich A. Lohmueller

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Familia: Betulaceae Juss.
Subfamilia: Betuloideae Gray
Genus:   Alnus Mill. (alder - Erle)

Alnus glutinosa
Alnus glutinosa
 
Alnus incana
Alnus incana
 
Alnus subcordata
Alnus subcordata
 
Alnus viridis
Alnus viridis
 

Species: ~ 30 ?
Subgenus Alnus:
  • Alnus acuminata (Andean alder). - Andes Mountains, South America.
  • Alnus cordata (Italian alder). - Italy.
  • Alnus cremastogyne
  • Alnus firma Siebold & Zucc. (Kyushu) Japan.
  • Alnus glutinosa (L.) Gaertn. (black alder - Schwarz-Erle). Europe.
  • Alnus incana (grey alder). Eurasia.
  • Alnus hirsuta (A. incana subsp. hirsuta) (Manchurian alder). Northeastern Asia, and central Asia in mountains.
  • Alnus japonica (Thunb.) Steud. (Japanese alder - Japanische Erle). Japan.
  • Alnus jorullensis (Mexican alder). Mexico, Guatemala.
  • Alnus mandshurica Russian Far East, China, Korea.
  • Alnus matsumurae (Honshu) Japan.
  • Alnus nepalensis (Nepalese alder). Eastern Himalaya, southwest China.
  • Alnus orientalis (oriental alder). Southern Turkey, northwest Syria, Cyprus.
  • Alnus oblongifolia (A. incana subsp. oblongifolia) (Arizona alder). Southwestern North America.
  • Alnus pendula Japan, Korea.
  • Alnus rhombifolia (white alder). Interior western North America.
  • Alnus rubra (red alder). West coastal North America.
  • Alnus rugosa (A. incana subsp. rugosa) (speckled alder). Northeastern North America.
  • Alnus serrulata (Hazel alder), Tag Alder or Smooth alder. Eastern North America.
  • Alnus sieboldiana (Honshu) Japan.
  • Alnus subcordata (Caucasian alder). Caucasus, Iran.
  • Alnus tenuifolia (A. incana subsp. tenuifolia) (thinleaf or mountain alder). Northwestern North America.
  • Alnus trabeculosa China, Japan.
Subgenus Clethropsis:
  • Alnus formosana (Formosan alder) Taiwan
  • Alnus maritima (Seaside alder). East coastal North America, plus disjunct population in Oklahoma.
  • Alnus nitida (Himalayan alder). Western Himalaya.
Subgenus Alnobetula:
  • Alnus viridis (green alder - Grün-Erle).
  • Alnus viridis subsp. viridis Eurasia.
  • Alnus viridis subsp. maximowiczii (A. maximowiczii). Japan.
  • Alnus viridis subsp. crispa (A. crispa). Northern North America.
  • Alnus viridis subsp. sinuata (A. sinuata), (Sitka alder or Slide alder). Western North America, far northeastern Siberia.

© Friedrich A. Lohmüller, 2008
homepage: http://www.f-lohmueller.de
 
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