Malus sieboldii explained

Malus sieboldii, commonly called Siebold's crab, Siebold's crabapple or Toringo crabapple, is a species of crabapple in the family Rosaceae.

Taxonomy

Some botanists have reclassified it as Malus toringo.^[1]

Varieties

It is sometimes considered to have three varieties:^[2]

• Malus sieboldii var. sieboldii (the true Siebold's crabapple)
• Malus sieboldii var. sargentii, which is sometimes considered to be a separate species Malus sargentii
• Malus sieboldii var. zumi

The cultivar Malus toringo 'Scarlett' has received the Royal Horticultural Society's Award of Garden Merit.^[3]

Distribution

Malus sieboldii—Malus toringo is native to eastern temperate Asia, in China, Japan, and Korea.

Pests

Fungal plant pathogen Pseudocercospora mali is found on the leaves of the tree in Japan.^[4]

Notes and References

1. http://plants.usda.gov/core/profile?symbol=mato6 USDA Plants Profile for Malus toringo (toringo crab)
2. Web site: GardenWebSearch results for: Malus . September 11, 2009 . dead . https://web.archive.org/web/20100404011219/http://hortiplex.gardenweb.com/plants/nph-ind.cgi?name=Malus&f=d&gl=1&p=1 . April 4, 2010 .
3. Web site: Malus toringo 'Scarlett' . RHS . 6 January 2021.
4. Crous . P.W. . Braun . U. . Hunter . G.C. . Wingfield . M.J. . Verkley . G.J.M. . Shin . H.-D. . Nakashima . C. . Groenewald . J.Z. . Phylogenetic lineages in Pseudocercospora . Studies in Mycology . June 2013 . 75 . 37–114 . 10.3114/sim0005 . 17 September 2023. free . 3713886 .