Okoubaka (genus)
| Okoubaka | ||||||||||||
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Okoubaka aubrevillei , bark |
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| Scientific name | ||||||||||||
| Okoubaka | ||||||||||||
| Pellegr. & Normand |
Okoubaka is a genus of plants whose position within the order of the sandalwood-like (Santalales) has long been discussed. They were placed in the families of the sandalwood family (Santalaceae), Olacaceae or a small family Octoknemaceae. It was placed in 1957 by Stauffer from the Olacaceae to the Santalaceae. In 2010 this genus was identified in Daniel L. Nickrent, Valéry Malécot, Romina Vidal-Russell & Joshua P. The: A revised classification of Santalales , In: Taxon , Volume 59, 2, 2010, pp. 538–558 with another seven genera in the new family Cervantesiaceae .
description
The two Okoubaka species grow as trees . They are hemiparasites . The alternate arranged on the branches leaves consist of a petiole and a simple, hairy leaf blade.
Okoubaka species are dioeciously separated sexes ( diocesan ). The paniculate inflorescences are made up of partial inflorescences . The stalked, unisexual flowers are radial symmetry and five-fold with a simple flower envelope , the sepals are missing. The male flowers contain only a circle with five stamens . The female flowers have a single-chambered, (half) subordinate ovary . There is only one stylus with a lobed scar. Reduced organs of the opposite sex are contained in the flowers. There is a glandular disc . They form stone fruits .
Systematics and distribution
The genus Okoubaka was 1946 in Bulletin de la Société Botanique de France 93, p. 139 with the type species Okoubaka aubrevillei Pellegr. & Normand set up.
The genus Okoubaka contains only two species, both of which are native to tropical Africa:
- Okoubaka aubrevillei Pellegr. & Normand
- Okoubaka michelsonii J. Leonard & Troupin
swell
- Cervantesiaceae belonging to the genus Okoubaka , accessed May 26, 2011
- Daniel L. Nickrent, Valéry Malécot, Romina Vidal-Russell & Joshua P. Der: A revised classification of Santalales , In: Taxon , Volume 59, 2, 2010, pp. 538–558: JSTOR 25677612 . (Section systematics and description)
Individual evidence
Web links
- On the position of the genus within the Santalales. (PDF), accessed in 2006
- Entry at GRIN. last viewed on May 26, 2011
- EM Veenendaal, IK Abebrese, MF Walsh and MD Swaine: Root Hemiparasitism in a West African Rainforest Tree Okoubaka aubrevillei (Santalaceae) , New Phytologist, Vol. 134, No. 3, 1996. JSTOR 2558566