Chinese catalpa
Catalpa ovata G. Don [Bignoniaceae]
Kisasage (キササゲ, 木大角豆)
Life form: deciduous tree
Distribution: native to southern China
Habitat: mesic sites, such as dry riverbed
Catalpa Scopoli in Japan
Five species in the world (2 in north America and 3 in eastern Asia)
All species in Catalpa are exotic to Japan (bascially by transplantation)
C. bignonioides Walt. (アメリカキササゲ)
C. bungei C. A. Mey. (トウキササゲ)
C. ovata G. Don (キササゲ)
C. speciosa Warder ex Engelm. (オオアメリカキササゲ)
Catalpa ovata in Hokkaido
[Left] a tree. [Center] fruits (legumes). [Right] leaves. At the arboretum of Teshio Experimental Forest, HU, on September 12 2010.
[Left] viewed from above. [Center] from below. [Right] flowers. In the norterhn part of Hokkaido University Campus, Sapporo, on August 15 2011.