Lepidobotryaceae

Lepidobotrys staudtii

The Lepidobotryaceae are a family in the order of the spindle tree -like ( Celastrales ) within the angiosperms ( Magnoliopsida ). It has only two types of a disjoint area in the Neotropics and in West Africa.

Description

The two kinds of Lepidobotryaceae are shrubs or trees. The alternate and distichous arranged leaves are divided into petiole and leaf blade. The basic structure of the leaf blades are assembled ( consisting only of a leaflet ), but act as simple and have smooth leaf margins. The stomata are paracytisch. In contrast to the majority of taxa in the order stipules are present here, they are quite long and adherent to the petiole.

The flowers are borne in terminal racemose inflorescences, but apparently the leaves opposite, short ( such as cones acting ). There are bracts present. The plants are dioecious getrenntgeschlechtig ( dioecious ). The small, unisexual, flowers are radial symmetry fünfzählig. The five sepals are fused at the base. There are five free petals present. Sepals and petals are similar in size. In the male flowers two circles, each with five more or less fused at the base, fertile ( fertile ) stamens are present, the stamens of the inner circle are significantly shorter than the outer. Nectaries are located on the inner surface of the stamen tube. It is a meaty discus available. In the female flowers three carpels are fused into a superior ovaries and they contain three pens, each with a capitate stigma.

To form two or dreiklappige capsule fruits that contain only one seed. The seeds have an aril.

Systematics and distribution

The Lepidobotryaceae family in 1950 was set up by Jean Joseph Gustave Léonard in Bulletin du Jardin Botanique de l' Etat 20, p 38. Type genus is Lepidobotrys Engl.

To the family of Lepidobotryaceae include only two monotypic genera, ie only two ways. (Some authors also wrote of a third kind. ) You own a disjoint area.

The position of this species have been discussed for a long time controversial. They were in the Linaceae ( Engler 1903), Oxalidaceae ( Hutchinson 1973, Cronquist 1981), Oxalidales (only Lepidobotrys Takhtajan 1997), Meliaceae (only Ruptiliocarpon Takhtajan 1997), Euphorbiaceae or Sapindales ( Hammel & Zamora 1993, Tobe & Hammel 1993) classified. The phylogenetic analyzes of the 21st century have shown that the Lepidobotryaceae are a sister family of Celastraceae and together now form the order of the Celastrales.

The two monotypic genera of the family of Lepidobotryaceae with their two species and the circulation areas are:

  • Lepidobotrys Engl: Lepidobotrys staudtii MANUAL: This species is native to tropical West Africa.
  • Ruptiliocarpon Caracolito Hammel & N.Zamora: This type is housed in a turn disjunct area in central and northern South America.

Swell

  • Description of the family of Lepidobotryaceae in APWebsite. (Section Description and systematics)
  • Li- Bing Zhang & Mark P. Simmons: Phylogeny and Delimitation of the Celastrales Inferred from Nuclear and Plastid Genes, In: Systematic Botany, 31 (1 ), 2006, pp. 122-137. doi: 10.1600/036364406775971778
  • Description of the family of Lepidobotryaceae s.str. with only Lepidobotrys staudtii at DELTA by L. Watson & MJ Dallwitz. (English )
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