Article · Wikipedia archive · Last revised Jun 6, 2026

Peraphyllum

Peraphyllum is a monotypic genus of flowering plants in the rose family, containing the single species Peraphyllum ramosissimum, commonly known as wild crab apple.

Last revised
Jun 6, 2026
Read time
≈ 2 min
Length
356 w
Citations
9
Source
Peraphyllum
Peraphyllum ramosissimum
Apparently Secure
Apparently Secure (NatureServe)1
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Embryophytes
Clade: Tracheophytes
Clade: Spermatophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Rosales
Family: Rosaceae
Subfamily: Amygdaloideae
Tribe: Maleae
Subtribe: Malinae
Genus: Peraphyllum
Nutt.
Species:
P. ramosissimum
Binomial name
Peraphyllum ramosissimum
Nutt.

Peraphyllum is a monotypic genus of flowering plants in the rose family, containing the single species Peraphyllum ramosissimum, commonly known as wild crab apple.

Description

Peraphyllum ramosissimum is a shrub which may reach 3 metres (10 ft) in height.2 Growing up to 3.5 centimetres (1+12 in) long,2 the leaves are simple; they can grow very close together on short shoots but are well separated on longer shoots.3

Like most other flowering plants of the Rosaceae, P. ramosissimum has 5 petals and 5 sepals with radial symmetry. The flowers have about 15–20 free stamens, and the petals are white to rose in color. The fruit is a yellowish to purplish pome about 1 centimetre (12 in) wide.2

Taxonomy

Translated from the Greek, the genus Peraphyllum means "very leafy" and the species name ramosissimum means "many branches". Peraphyllum is most closely related to Amelanchier, Malacomeles, Crataegus, and Mespilus.4

Distribution and habitat

Peraphyllum ramosissimum grows in Washington, California, Oregon,2 Idaho, Utah, Colorado, and New Mexico, usually in pine and juniper woodlands.2 In California it can be found in the High Cascades, High Sierra Nevada, Great Basin, and Mojave Desert sky islands.

Uses

The ripe pome is edible and sweetish but has a bitter aftertaste.2

References

References

  1. NatureServe. "Peraphyllum ramosissimum". NatureServe Explorer. Arlington, Virginia. Retrieved 21 March 2026.
  2. Turner, Mark; Kuhlmann, Ellen (2014). Trees & Shrubs of the Pacific Northwest (1st ed.). Portland, OR: Timber Press. p. 248. ISBN 978-1-60469-263-1.
  3. Janene Auger and Justin G. Smith, Peraphyllum ramosissimum Nutt., squaw-apple in Woody Plant Seed Manual Interim Web Site Archived 2009-02-19 at the Wayback Machine
  4. Campbell, C.S.; Evans, R.C.; Morgan, D.R.; Dickinson, T.A.; Arsenault, M.P. (2007). Phylogeny of subtribe Pyrinae (formerly the Maloideae, Rosaceae): Limited resolution of a complex evolutionary history. Plant Systematics and Evolution. 266(1–2): 119–145.
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