Acanthopanax sieboldianus Makino

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Credits

Article from Bean's Trees and Shrubs Hardy in the British Isles

Recommended citation
'Acanthopanax sieboldianus' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/acanthopanax/acanthopanax-sieboldianus/). Accessed 2024-09-14.

Genus

Acanthopanax

Synonyms

A. pentaphyllus (Sieb. & Zucc.) Marchal
A. spinosus Hort., not (L.f.) Miq.

Infraspecifics

'Variegatus'

Other taxa in genus

Glossary

inflorescence: Flower-bearing part of a plant; arrangement of flowers on the floral axis.
umbel: Inflorescence in which pedicels all arise from same point on peduncle. May be flat-topped (as in e.g. Umbelliferae) to spherical (as in e.g. Araliaceae). umbellate In form of umbel.
variety: (var.) Taxonomic rank (varietas) grouping variants of a species with relatively minor differentiation in a few characters but occurring as recognisable populations. Often loosely used for rare minor variants more usefully ranked as forms.

References

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Credits

Article from Bean's Trees and Shrubs Hardy in the British Isles

Recommended citation
'Acanthopanax sieboldianus' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/acanthopanax/acanthopanax-sieboldianus/). Accessed 2024-09-14.

Eleutherococcus sieboldianus is quite hardy if given shelter from cold winds, and a most elegant, handsome-foliaged shrub. Gent Botanical Garden (19000122), Belgium. 09 May 2010. Image Guillaume Mamdy.

A deciduous shrub of loose habit, 8 to 10 ft high, with erect stems and arching, slender branches, often armed with a spine at the base of each leafstalk or leaf-cluster; the whole plant without down. Leaves composed of three to (normally) five leaflets, borne on a slender common stalk 11⁄2 to 31⁄2 in. long; leaflets stalkless, obovate, 1 to 21⁄2 in. long, 1⁄3 to 1 in. wide, toothed except towards the tapering base. Flowers very small, greenish white, produced during June and later, on a spherical umbel 3⁄4 to 1 in. diameter, terminating a slender stalk 2 to 4 in. long. On the year-old wood the leaves are produced in clusters from the previous year’s buds; it is from the centre of this cluster that the inflorescence is borne.

Native of China and Japan; introduced in 1874, but for long confined to cool greenhouses. It is quite hardy if given shelter from north and east, and a most elegant, handsome-foliaged shrub, although destitute of flower beauty. Still more pleasing is the garden variety cv. ‘Variegatus’.

Eleutherococcus sieboldianus is a deciduous shrub of loose habit, with branches often armed with a spine at the base of each leafstalk or leaf-cluster. Meise Botanic Garden (20190101–36), Belgium. 20 August 2022. Image Guillaume Mamdy.

Flowers of Eleutherococcus sieboldianus are very small, greenish white and produced in a spherical umbel. Meise Botanic Garden (20190101–36), Belgium. 20 August 2022. Image Guillaume Mamdy.

Close-up on the greenish flowers of Eleutherococcus sieboldianus. Meise Botanic Garden (20190101–36), Belgium. 20 August 2022. Image Guillaume Mamdy.

Spherical umbel of immature fruits of Eleutherococcus sieboldianus. Meise Botanic Garden (20190101–36), Belgium. 20 August 2022. Image Guillaume Mamdy.

Foliage on Eleutherococcus sieboldianus, taken from a plant at Arboreum Het Leen Eeklo, Belgium (22 September 2017). Image © Jan De Langhe - Arboretum Wespelaar.

The leaves on Eleutherococcus sieboldianus have 3 to 5 leaflets (Arboreum Het Leen Eeklo, Belgium – 22 September 2017). Image © Jan De Langhe - Arboretum Wespelaar.

Eleutherococcus sieboldianus is armed in part of the foliage with broad-based spines near the leaf clusters (Arboreum Het Leen Eeklo, Belgium – 22 September 2017). Image © Jan De Langhe - Arboretum Wespelaar.

Slender spine near a petiole base on Eleutherococcus sieboldianus (Arboreum Het Leen Eeklo, Belgium – 22 September 2017). Image © Jan De Langhe - Arboretum Wespelaar.

Sessile leaflets, with the glabrous lower surfaces exposed on Eleutherococcus sieboldianus (Arboreum Het Leen Eeklo, Belgium – 22 September 2017). Image © Jan De Langhe - Arboretum Wespelaar.

The leaflet upper surfaces are also glabrous on Eleutherococcus sieboldianus (Arboreum Het Leen Eeklo, Belgium – 22 September 2017). Image © Jan De Langhe - Arboretum Wespelaar.

Fertile branchlet on Eleutherococcus sieboldianus (Arboreum Het Leen Eeklo, Belgium – 22 September 2017). Image © Jan De Langhe - Arboretum Wespelaar.

Infructescence on Eleutherococcus sieboldianus (Arboreum Het Leen Eeklo, Belgium – 22 September 2017). Image © Jan De Langhe - Arboretum Wespelaar.

'Variegatus'

Leaflets are edged with a broad border of creamy white. This is one of the daintiest of variegated shrubs, hardy, but needing a sheltered position. Propagated by cuttings made of short, moderately firm shoots in heat; or of harder wood under a handlight. It was once known in gardens as Panax quinquefolium variegatum. Illustrated in Flore des Serres, tt. 2079–80 (1874).