Catalpa speciosa, commonly known as the northern catalpa, hardy catalpa, western catalpa, cigar tree, catawba-tree,
or bois chavanon, is a species of Catalpa native to the midwestern United States.
The Latin specific epithet speciosa means “showy”.
It is a medium-sized, deciduous tree growing to 15–30 meters tall and 12 meters wide. It has a trunk up to 1 m diameter, with brown to gray bark maturing into hard plates or ridges.
The leaves are deciduous, opposite (or whorled), large, heart shaped, ...
Шинж тэмдэг эсвэл өвчний талаар бичиж, тус болох ургамлын талаар уншиж, өвслөг ургамлыг бичиж, өвчний эсрэг шинж тэмдгийг үзээрэй.
* Бүх мэдээлэл нь хэвлэгдсэн эрдэм шинжилгээний судалгаанд үндэслэсэн болно