Dipterocarpaceae


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Dipterocarpaceae

[¦dip·tə·rō‚kär′pās·ē‚ē]
(botany)
A family of dicotyledonous plants in the order Theales having mostly stipulate, alternate leaves, a prominently exserted connective, and a calyx that is mostly winged in fruit.

Dipterocarpaceae

 

a family of dicotyledonous choripetalous plants. There are about 330 species making up 17 genera (16 in tropical Asia and one in tropical Africa). Almost all the representatives of this family are evergreen trees attaining a height of 60-70 m. The leaves are alternate and with stipules; the flowers are regular, bisexual, and gathered into spikes, racemes, or panicles. There are five sepals and five petals, from five to 15 or more stamens, and one pistil with a three-celled ovary. The fruit is a monospermous nut surrounded by a calyx whose sepals become enlarged and help spread the fruit. Economically important are species of the genera Shorea, Dipterocarpus and Drioblanops, which yield valuable timber, dammar, balsam, camphor, and refractory fats.

References in periodicals archive ?
There were so far 17 Shorea species of Dipterocarpaceae which have been researched on, about 11 of them have been mainly researched in Indonesia (Aminah et al.
Oligostilbenoid dari Tumbuh-Tumbuhan Dipterocarpaceae, Bul.
Arbuscular Mycorrhizal Fungi of Dipterocarpaceae on Jianfengling Mountain, Hainan Province.
Taiwania cryptomerioides Dipterocarpaceae Hayata Ulmus pumila L.
This appears to have been a more common practice in the case of resins such as Agathis, from the Araucariaceae family, which is widespread in Insular Southeast Asia, but may also have taken place with Dipterocarpaceae or `dammar' type resins on the mainland (Burkill 1935).
2004, 2007), with descriptions of the families Apocynaceae, Cunoniaceae, Dipterocarpaceae, Herndandiaceae, Meliaceae, Polygalaceae, Symplocaceae and Thymelaeaceae, were published, bringing the total number of volumes to six.
Webb 2000 Experimental Tests of the Spatiotemporal Scale of Seed Predation in Mast-Fruiting Dipterocarpaceae.
The plot is characterized by a 30-40 meter relatively unbroken canopy, and is dominated floristically by the Dipterocarpaceae, Euphorbiaceae, and Ebenaceae families.
Tschirch and his students soon reported schizolysigeny for many other taxa, including the conifers, Myrtaceae, Myoporaceae, Dipterocarpaceae, and Umbelliferae.
The ten best-represented plant families are Dipterocarpaceae, with 40 species, Euphorbiaceae 36 species, Rubiaceae 35 species, Myrtaceae 26 species, Fabaceae 21 species, Lauraceae 20 species, Melastomataceae 20 species, Guttiferae 19 species, Moraceae 14 species, and Arecaceae 14 species.
Within the Dipterocarpaceae, however, there are borderline cases in which it is difficult to decide whether the term "ruminate endosperm" should be applied.