7-739: See text Dillenia is a genus of evergreen or semi-evergreen trees and shrubs in the flowering plant family Dilleniaceae , native to tropical and subtropical regions of southern Asia, Australasia , and the Indian Ocean islands. The genus is named after the German botanist Johann Jacob Dillenius . The leaves are simple and spirally arranged. They are generally large, in the case of D. reticulata reaching 1.27 m (4 ft 2 in) in length and about 41 cm (16 in) wide. The flowers are solitary, or in terminal racemes , with five sepals and five petals, numerous stamens (up to 900 in
14-484: A family has been universally recognized by taxonomists. It is known to gardeners for the genus Hibbertia , which contains many commercially valuable garden species. The family is found in the tropics and subtropics plus all of Australia . Most of the members in it are woody plants - lianas or trees such as Dillenia - but herbaceous species such as Hibbertia are also present in Dilleniaceae. The leaves of
21-468: The case of D. ovalifolia , and a cluster of five to 20 carpels ; they are superficially similar in appearance to Magnolia flowers. As of September 2024, Plants of the World Online recognises the following 60 species: Dilleniaceae APG II system recognizes the following genera: Dilleniaceae is a family of flowering plants with 11 genera and about 430 known species. Such
28-516: The core members of its order. Another possible situation places Dilleniaceae as an ancient group, sister to the superrosidae clade (the family shares some common morphology with Vitales ) but this is not absolutely proven. The APG II system , of 2003 (unchanged from the APG system of 1998), also recognizes this family, unplaced as to order, assigned to the clade core eudicots . APG II debates either including it in order Caryophyllales or reinstating
35-403: The order Dilleniales for just this one family, but decides to leave it unplaced. The family is remarkable because of its variability of morphological characteristics that now are much steadier in other Angiosperm groups. Thus, Dilleniaceae may be an ancient clade that expresses some phylogenetic relation between the higher Eudicots and the rather more primitive groups. It is estimated that
42-406: The other eudicots is uncertain. Some studies suggested that Dilleniaceae may be sister to Rhabdodendraceae a clade that was thought to be sister to all the rest Caryophyllales . The caryophyllid Rhabdodendron and the members in the family with the questionable placement in fact share some morphological characteristics, but it has been found that Rhabdodendraceae is actually sister only to
49-412: The plants in the family are wide and well-developed, but in certain species of Hibbertia they are strongly modified. The flowers are mainly showy and colorful with visible reproductive components. Buzz pollination is common in the group. Fruits of some species, such as Dillenia indica (elephant apple), are edible. The position of the family in the phylogenetic tree and its classification among
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