Details of genus: Clethra L. [33]
genus_ja:
genus_en: Summer-sweet, Sweet pepper bush, White alder
# spp.:
pub_year:
accepted: Accepted
Family: Clethraceae
family_ja: リョウブ
Infra familial classification:
distribution_en: Trop.America, Asia, N.America
description_en: Genus of more than 60 species of deciduous and evergreen trees and shrubs, occurring in woodland, swamps, and rocky places in E. Asia and North America, with one species (C. arborea) from Madeira. The leaves are alternate, simple, obovate to oblong, rarely lance-shaped, finely to coarsely toothed, and mid- to dark green. Clethras are grown for their fragrant, bell- to cup-shaped, white or yellowish white flowers, borne in racemes or panicles, and are suitable for a woodland garden. In frost-prone areas, grow C. arborea in a cool greenhouse or conservatory; it may be moved outdoors during summer.
hardiness_en: Fully hardy to half hardy.
cultivation_en:
propagation_en: Sow seed at 6-12°C (43-54°F) in spring or autumn, or sow seed of hardy species in containers outdoors in spring or autumn. Root greenwood cuttings of deciduous species in early summer and semi-ripe cuttings of evergreens in mid- or late summer.
pests_en: Trouble free.
description_ja:
comment:
comment_ja: リョウブ
type_species:
Phylogenetic definition:
Update Information: Created: 2007-12-06 12:51; Updated: 2022-03-09 15:20
family:
| System | Accepted? | Scientific name | Japanese name | Infra-familial classification | # species | |
| APG4 | Clethraceae | リョウブ科 | Show | |||
| PB2 | Cyrillaceae | キリラ科 | Show | |||
| PB3 | Clethraceae | リョウブ科 | Show |