Ventilagineae

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Ventilagineae
Branch with flowers of Ventilago maderaspatana

Branch with flowers of Ventilago maderaspatana

Systematics
Nuclear eudicotyledons
Rosids
Eurosiden I
Order : Rose-like (rosales)
Family : Buckthorn Family (Rhamnaceae)
Tribe : Ventilagineae
Scientific name
Ventilagineae
Hook f.

Ventilagineae are a tribe in the family of Buckthorn family (Rhamnaceae), which are associated with two genera. The representatives of the tribes grow in the tropics of the Old World.

description

The representatives of the tribe usually form climbing bushes , less often small trees . They are not reinforced, tendrils are missing. The branches are not flexible and hairless. The leaves grow alternately and have pinnate veins. The stipules fall off early. As inflorescences are dolde shaped cymes , tufts or axillary or terminal panicles formed. The single flowers have a spread calyx . Petals are present or may be absent. The ovary is twofold, semi-subordinate to subordinate and more or less sunk into the disc . The discus is meaty, warty, and gives off nectar . The stylus has two scar-like lobes, or it has two ends with separate scars . The fruits resemble wing nuts that do not open, or they are opening capsules with an appendage on top. The seeds have no endosperm . The outer pollen wall (exine) is wrinkled or perforated.

The number of chromosomes is 2n = 24.

distribution

The representatives of the tribes grow in the tropics of the Old World .

Systematics and research history

Ventilagineae is one of the eleven tribe of the buckthorn family (Rhamnaceae) with Ventilago Gaertn. as a type - genus . The tribe are assigned to two genera:

Individual evidence

  1. ↑ D. Medan, C. Schiarend: Rhamnaceae in Klaus Kubitzki: The Families and Genera of Vascular Plants , Volume VI, p. 334.
  2. ↑ a b c d Richardson et al .: A Revision of the Tribal Classification of Rhamnaceae , p. 334.
  3. ↑ D. Medan, C. ski Arend: Rhamnaceae in Klaus Kubitzki: The Families and Genera of Vascular Plants , Volume VI, S. 325, 326th
  4. ^ Ventilagineae in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.

literature

  • Klaus Kubitzki (Ed.): The Families and Genera of Vascular Plants . Volume 6: Flowering Plants, Dicotyledons: Celastrales, Oxalidales, Rosales, Cornales, Ericales . Springer, Berlin / Heidelberg / New York 2004, ISBN 3-540-06512-1 , pp. 334 (English).
  • JE Richardson, MF Fay, QCB Cronk, MW Chase: A Revision of the Tribal Classification of Rhamnaceae . In: Kew Bulletin . Vol. 55, No. 2 . Springer, 2000, p. 311-340 , doi : 10.2307 / 4115645 .

Web links

Commons : Ventilagineae  - collection of images, videos and audio files