Magnolia sieboldii, Siebold's magnolia, also known as Korean mountain
magnolia and Oyama magnolia, is a species of
Magnolia native to east
Asia in China, Japan, and Korea. It is named
after the German doctor
Philipp Franz von Siebold
Philipp Franz von Siebold (1796–1866).
Magnolia sieboldii is a large shrub or small tree 5–10 m
(16–33 ft) tall. The stalks, young leaves, young twigs and
young buds are downy. The leaves are elliptical to ovate-oblong,
9–16 cm (rarely 25 cm) long and 4–10 cm (rarely
12 cm) broad, with a 1.5-4.5 cm petiole.
The flowers, unlike the better-known spring flowering Magnolias, open
primarily in the early summer, but continue intermittently until late
summer. They are pendulous, cup-shaped, 7–10 cm diameter, and
have 6-12 tepals, the outer three smaller, the rest larger, and pure
white; the carpels are greenish and the stamens reddish-purple or
There are three subspecies:
Magnolia sieboldii subsp. japonica. Japan. Low shrub; flowers with 6
tepals and greenish-white stamens.
Magnolia sieboldii subsp. sieboldii. Japan, Korea, eastern China. Tree
or large shrub; flowers with 9-12 tepals and reddish-purple stamens;
leaves smaller, rarely over 16 cm.
Magnolia sieboldii subsp. sinensis. Southwestern
flowers as subsp. sieboldii; leaves larger, commonly to 22 cm.
Magnolia sieboldii is grown as an ornamental tree in gardens. It is
one of the hardiest magnolias, successful in cultivation as far north
Arboretum Mustila in Finland. The cultivar 'Colossus' has gained
the Royal Horticultural Society's Award of Garden Merit.
Called mongnan or mokran (목란/木蘭), Siebold's magnolia is the
national flower of North Korea.
^ The Plant List: A Working List of All Plant Species, retrieved 28
^ English Names for Korean Native Plants (PDF). Pocheon: Korea
National Arboretum. 2015. p. 532. ISBN 978-89-97450-98-5.
Archived from the original (PDF) on 25 May 2017. Retrieved 24 December
2016 – via
Korea Forest Service.
Magnolia sieboldii 'Colossus' AGM". Royal Horticultural Society.
2017. Retrieved 2017-01-27.
^ Lim, Reuben C. J. (29 June 2013). "Floral Emblems of the world".
anbg.gov.au. Australian National Herbarium. Retrieved 9 September
Hunt, D. (ed). (1998). Magnolias and their allies. International
Dendrology Society and
Magnolia Society. ISBN 0-9517234-8-0
Flora of China:
Magnoliaceae (draft account)
National symbols of North Korea
Magnolia sieboldii (flower)
Northern goshawk (bird)
Pungsan dog (dog)
Juche Tower and
Foundation Day (day)
Plant List: kew-117825