Dacrydium

Rimu Harzeibe ( Dacrydium cupressinum )

The resin yew trees ( Dacrydium ) are a genus of flowering plants in the family of Podocarpus plants ( Podocarpaceae ). The botanical genus name derives from the Greek: dakra for tear and supposedly refers to the wood.

Dissemination

The distribution of the genus ranges seen from the south of New Zealand to New Caledonia, the islands of Fiji and the Solomon Islands to New Guinea, Indonesia and the Philippines, Thailand and continue to to southern China as the northernmost area.

Description

Dacrydium species are trees or shrubs. The leaves of young plants are shaped differently than on older plants. The leaves of young plants are wide, the older plants have needle-like or scale-like.

They are dioecious getrenntgeschlechtig ( dioecious ). The sessile male cones are single, terminal or axillary on the branches. For the terminally standing on the branches, female cones usually only a tap scale is fertile, it is therefore formed at completion of fertilization, only one seed. The seeds are surrounded by an aril and mature within one year. The aril is colored fleshy and bright in some species at maturity.

Use

The yellow to reddish wood is sometimes textured beautifully. It is used, among other things, to build houses and furniture.

System

The old genus Dacrydium in 1982 ( see references ) divided into Falcatifolium, Lepidothamnus, Lagarostrobos, Halocarpus and Dacrydium.

There are now 16 to 20 Dacrydium species:

  • Dacrydium araucarioides Brongn. & Griseb.
  • Dacrydium balansae Brongn. & Griseb.
  • Dacrydium beccarii Parl
  • Dacrydium comosum Corner
  • Dacrydium cornwallianum de foliage.
  • Rimu Harzeibe or cypress -like Harzeibe ( Dacrydium cupressinum Sol. Ex Lamb. ), Occurs only in New Zealand
  • Width Harzeibe ( Dacrydium elatum ( Roxb. ) Wall ex Hook. . ), Origin: Malay Peninsula, Sumatra, Kalimantan, Cambodia
  • Dacrydium ericoides de foliage.
  • Dacrydium gibbsiae Stapf
  • Dacrydium gracilis de foliage.
  • Dacrydium guillauminii J.Buchholz
  • Dacrydium leptophyllum ( Wasscher ) de Laub.
  • Dacrydium lycopodioides Brongn. & Griseb.
  • Dacrydium magnum de foliage.
  • Dacrydium medium de foliage.
  • Dacrydium nausoriense de foliage.
  • Dacrydium nidulum de foliage.
  • Dacrydium novo - guineense Gibbs
  • Dacrydium pectinatum de foliage.
  • Dacrydium spathoides de foliage.
  • Dacrydium xanthandrum Pilg.

The following hybrids has become known:

  • Dacrydium x suprinii Nimsch (D. guillauminii x D. araucarioides ); it was found in New Caledonia.

Swell

  • Christopher J. Earle: Dacrydium. In: The Gymnosperm Database. October 14, 2011, accessed on 21 October 2011 ( english, Section Description and systematics).
  • Liguo Fu, Yong Li & Robert R. Mill: Podocarpaceae: Dacrydium - text the same online as printed work. In: Wu Zheng -yi, Peter H. Raven (eds.): Flora of China. Volume 4: Cycadaceae through Fagaceae, Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 1999, ISBN 0-915279-70-3, page 78
  • The International Plant Name Index. Retrieved on January 3, 2013.
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