Trochodendron

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Credits

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

Recommended citation
'Trochodendron' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/trochodendron/). Accessed 2019-12-10.

Family

  • Trochodendraceae

Species in genus

Glossary

apex
(pl. apices) Tip. apical At the apex.
connate
Fused together with a similar part. (Cf. adnate.)
endemic
(of a plant or an animal) Found in a native state only within a defined region or country.
family
A group of genera more closely related to each other than to genera in other families. Names of families are identified by the suffix ‘-aceae’ (e.g. Myrtaceae) with a few traditional exceptions (e.g. Leguminosae).
follicle
Dry dehiscent fruit containing numerous seeds derived from a single carpel.
included
(botanical) Contained within another part or organ.
inflorescence
Flower-bearing part of a plant; arrangement of flowers on the floral axis.
pedicel
Stalk of a single flower.
perianth
Calyx and corolla. Term used especially when petals and sepals are not easily distinguished from each other.
raceme
Unbranched inflorescence with flowers produced laterally usually with a pedicel. racemose In form of raceme.
sessile
Lacking a stem or stalk.
stigma
(in a flower) The part of the carpel that receives pollen and on which it germinates. May be at the tip of a short or long style or may be reduced to a stigmatic surface at the apex of the ovary.
whorl
Arrangement of three or more organs (leaves flowers) around a central axis. whorled Arranged in a whorl.

References

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Credits

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

Recommended citation
'Trochodendron' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/trochodendron/). Accessed 2019-12-10.

This is the sole member of the family to which it gives its name, and with the family Tetracentraceae constitutes the Order Trochodendrales. As in Tetracentron (q.v.) the structure of the wood is primitive, resembling that of the conifers. Flowers in an erect raceme-like terminal inflorescence, without sepals or petals (though the minute bracteoles at the apex of the pedicels may represent a much reduced perianth). Stamens numerous, their long filaments radiating from the base of a torus (expanded apex of the pedicel). Pistils sessile, in a single whorl, connate laterally, each with a sessile stigma and a single chamber containing numerous ovules, each pistil developing into a follicle dehiscing along the upper surface. The generic name literally means ‘wheel-tree’, from the manner in which the stamens radiate like the spokes of a wheel.

Euptelea, included in the Trochodendraceae by Dr Hutchinson, is by most botanists placed in a separate, also monotypic, family. On the other hand the genus Paracryphia, endemic to New Caledonia, is near to the Trochodendraceae.

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