Details of genus: Petrophytum (Nutt.) Rydb. [2594]
genus_ja:
genus_en: Rock spiraea
# spp.: 3
pub_year: 1900
accepted: Accepted
Family: Rosaceae
family_ja: バラ
Infra familial classification: Subfamily Amygdaloideae: Tribe Spiraeeae
Citation:| data_source | Kind of information | Note | |
|---|---|---|---|
| Kew Gardens (2017) Plants of the world online (POWO). Accessed on 18 Jan 2024 | Scientific name & others | Show this data_source |
distribution_en: W. & Central U.S.A. to NE. Mexico
description_en: Genus of 3 species of evergreen sub-shrubs, related to Spiraea, occurring in screes or rock crevices in the mountains of W. North America. They are grown for their short, dense, spike-like racemes of tiny, fluffy, cup-shaped flowers, each with 5 overlapping petals, produced in summer, and for their neat, compact habit. They form dense mats or mounds of short, prostrate, branching shoots with densely packed, entire, inversely lance-shaped to spoon-shaped, leathery, hairy leaves. Grow in crevices in a rock garden, or in tufa, in a trough, or in an alpine house.
hardiness_en: Fully hardy in very well-drained soil.
cultivation_en:
propagation_en: Sow seed in containers in an open frame in autumn. Take semi-ripe cuttings in early summer. Remove offsets in spring,
pests_en: Aphids and red spider mites may be troublesome under glass.
description_ja:
comment:
comment_ja:
type_species:
Phylogenetic definition:
Update Information: Created: 2010-06-04 18:58; Updated: 2024-01-18 15:58 by hkokubun@mac.com
family:
| System | Accepted? | Scientific name | Japanese name | Infra-familial classification | # species | |
| PB2 | Rosaceae | バラ科 | Subfamily Amygdaloideae | Show | ||
| PB3 | Rosaceae | バラ科 | Subfamily Amygdaloideae | Show | ||
| APG4 | Accepted | Rosaceae | バラ科 | Subfamily Amygdaloideae: Tribe Spiraeeae | 3 | Show |