Antegibbaeum fissoides

from Wikipedia, the free encyclopedia
Antegibbaeum fissoides
Antegibbaeum = Gibbaeum fissoides? (Aizoaceae) (4086822395) .jpg

Antegibbaeum fissoides

Systematics
Nuclear eudicotyledons
Order : Clove-like (Caryophyllales)
Family : Midday flowers (Aizoaceae)
Subfamily : Ruschioideae
Genre : Antegibbaeum
Type : Antegibbaeum fissoides
Scientific name of the  genus
Antegibbaeum
Schwantes ex C. Weber
Scientific name of the  species
Antegibbaeum fissoides
( Haw. ) C. Weber

Antegibbaeum fissoides is the only plant of monotypic genus Antegibbaeum from the family of aizoaceae (Aizoaceae). The botanical name of the genus is derived from the Latin word “ante” for “before” and the genus name Gibbaeum , as it was assumed that the plants are an evolutionary predecessor of the genus Gibbaeum . The epithet of the species refers to the similarity with the species Argyroderma fissum . The Greek ending "-oides" means "to resemble".

description

Antegibbaeum fissoides grows compactly with uneven, upright to slightly spreading leaves . The leaves are flat on the top, rounded on the underside and sometimes keeled at the tip. The xeromorphic outer wall of the epidermis contains crystal sand . It is covered with a continuous layer of wax that later breaks up into flakes and therefore looks wrinkled.

The individual flowers reach a diameter of up to 50 millimeters. There are six sepals . The 20 to 50  petals are dark purple, the 50 to 170  stamens are white. The nectarium is designed as a ring.

The plants bloom in their homeland from August to September. The flowers open at noon and close again in the evening.

The six-compartment capsule fruit has a diameter of about 12 millimeters and a height of 14 millimeters. The spiked seeds are 0.7 to 1.7 millimeters long and 0.55 to 1.2 millimeters thick.

Systematics, number of chromosomes and distribution

Antegibbaeum fissoides distributed in the South African province of Western Cape in the Little Karoo between the cities of Ladismith , Laingsburg , Montagu and Swellendam . The plants grow on quartz stone fields. The annual rainfall is around 200 millimeters, with most of the precipitation falling in the months of March and November.

The chromosome number is .

It was first described as Mesembryanthemum fissoides in 1795 by Adrian Hardy Haworth . Gert Cornelius Nel classified the species in 1953 as Gibbaeum fissoides in the genus Gibbaeum . Claude Weber finally established the monotypical genus Antegibbaeum in 1968 .

proof

literature

  • Heidrun EK Hartmann (Ed.): Illustrated Handbook of Succulent Plants: Aizoaceae AE . Springer Verlag, Berlin / Heidelberg / New York 2001, ISBN 3-540-41691-9 , pp. 40-41 .
  • Gideon Smith et al. a. (Ed.): Mesembs of the World: Illustrated Guide to a Remarkable Succulent Group . Briza Publications, 1998, ISBN 1-875093-13-3 , pp. 134-135 .

Individual evidence

  1. ↑ Observations on the genus Mesembryanthemum ... pp. 135, 1795
  2. ^ The Gibbaeum handbook . P. 81, Blandford Press, London 1953
  3. ^ Baileya - A Quarterly Journal of Horticultural Taxonomy . Volume 16, p. 11, Ithaca (NY) 1968

Web links