Catalpa × erubescens (or Catalpa erubescens), the hybrid catalpa, is a hybrid plant species of Catalpa in the family Bignoniaceae. It is a medium-sized tree, reaching at most 20 m. Its parents are southern catalpa, Catalpa bignonioides, from the United States, and yellow catalpa, C. ovata, from China. There is one accepted[2] form, Catalpa × erubescens Carrière f. purpurea (Wawra & Abel) Paclt, which has purple, some say chocolate-colored, young leaves which turn green as they mature.[3] This form is marketed under a variety of names, such as hybrid catalpa 'Purpurea', red-leaved Indian bean tree, and purple hybrid catalpa, and has gained the Royal Horticultural Society's Award of Garden Merit.[4]
| Catalpa × erubescens | |
|---|---|
| |
| Flowers at the Cambridge University Botanic Garden | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Lamiales |
| Family: | Bignoniaceae |
| Genus: | Catalpa |
| Species: | C. × erubescens
|
| Binomial name | |
| Catalpa × erubescens | |
References
edit- ^ Rev. Hort. (Paris) 41:460. 1869
- ^ Olsen, Richard T; Kirkbride, Joseph H (2017). "Taxonomic revision of the genus Catalpa (Bignoniaceae)". Brittonia. 69 (3): 387–421. doi:10.1007/s12228-017-9471-7. S2CID 45922216.
- ^ Dirr, Michael A. (2011). Dirr's Encyclopedia of Trees and Shrubs. Timber Press. pp. 158–159. ISBN 9780881929010.
- ^ "Catalpa × erubescens 'Purpurea' purple hybrid catalpa". Retrieved 29 December 2019.