Arbutoideae

The Arbutoideae are a subfamily in the flowering plant family Ericaceae. Phylogenetic analysis supported all genera of the subfamily as monophyletic, except Arbutus.[1] Moreover, it was suggested that the non-sister relationship between Mediterranean and North American species may be explained by a once widespread distribution in the Northern hemisphere before the Neogene.[1]

Arbutoideae
Arbutus menziesii
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Ericaceae
Subfamily: Arbutoideae
Nied.
Type genus
Arbutus
Genera

The genera Arbutus, Arctostaphylos, Comarostaphylis form a particular type of mycorrhizal symbiosis with the fungus Arbutoid mycorrhiza, which resembles ectomycorrhizas.[2][3]

Genera List
ImageGenusLiving Species
Arbutus L.
Arctostaphylos Adans.
Arctous (A.Gray) Nied.
  • Arctous alpina (L.) Nied.
  • Arctous microphyllus C.Y.Wu
  • Arctous ruber (Rehder & E.H.Wilson) Nakai
Comarostaphylis Zucc.
Ornithostaphylos Small
  • Ornithostaphylos oppositifolia, the Baja birdbush
Xylococcus Nutt.
  • Xylococcus bicolor, the mission manzanita


References
  1. Hileman LC, Vasey MC, Parker VT (2001). "Phylogeny and biogeography of the Arbutoideae (Ericaceae): implications for the Madrean–Tethyan hypothesis". Systematic Botany. 26 (1): 131–143. doi:10.1043/0363-6445-26.1.131 (inactive 2021-01-06).CS1 maint: DOI inactive as of January 2021 (link)
  2. Osmundsen TW, Halling RE, den Bakker HC (2007). "Morphological and molecular evidence supporting an arbutoid mycorrhizal relationship in the Costa Rican páramo". Fungal Diversity. 17 (3): 217–222. doi:10.1007/s00572-006-0098-x. PMID 17216498. S2CID 19084561.
  3. Smith SE, Read D (2008). Mycorrhizal Symbiosis (3rd ed.). Amsterdam; Boston: Academic Press. ISBN 978-0-12-370526-6.
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