Belfast Botanic Gardens Tree Archive

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This series of short articles about trees in the Belfast Botanic Gardens is compiled by members of the Friends group and Gardens staff. We aim to build up to a comprehensive archive of trees in Belfast Botanic Gardens. Each article illustrates a tree growing in Belfast Botanic Gardens together with information from a range of sources. Where possible we will give the tree tag number - these are the small aluminium discs, usually fixed on the tree trunk, 2 to 3m above ground level.
Thujopsis dolabrata
(no English name - sometimes called 'hiba')

Tag 615
54 deg 34.938N
5 deg 55.898W

Thujopsis is a genus with a single species, with two varieties. It is endemic to Japan and was introduced to the West in 1855. It can make a large tree up to 40m. As the name suggests it is related to the Thujas, but has quite distinctive leaves with dramatic white markings on the underside (see photos below). In fact the combination of the very glossy green upper side of the leaf and the white marked underside give the foliage a distinctly plastic look. The cones are small but slightly larger than those of Thuja plicata. Thujopsis is seldom seen except in arboreta and large gardens. It not tolerant of draught and is grown more widely in Ireland and western areas of the British Isles. The specimen in Belfast Botanic Gardens is a variegated form - Thujopsis dolabrata 'Variegata'. This was introduced from Japan by Robert Fortune in 1861(the same Fortune that brought 20,000 tea plants from China to the Darjeeling region of India).

Thujopsis dolabrata in Belfast Botanic Gardens Thujopsis dolabrata bark
Thujopsis dolabrata in Belfast Botanic Gardens Thujopsis dolabrata bark
Thujopsis dolabrata variagated form Thujopsis dolabrata leaf detail
Thujopsis dolabrata, variegated form Thujopsis dolabrata, glossy upper surface of leaves
Thujopsis dolabrata stomatal surface of leaf Thujopsis dolabrata old cone
Thujopsis dolabrata underside of leaves Thujopsis dolabrata, old cone (seeds shed) and remains of male cones

Photos taken in Belfast Botanic Gardens in 2009. Copyright: Friends of Belfast Botanic Gardens.

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