Grewioideae

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Grewioideae
Cape Linden (Sparrmannia africana)

Cape Linden ( Sparrmannia africana )

Systematics
Nuclear eudicotyledons
Rosids
Eurosiden II
Order : Mallow-like (Malvales)
Family : Mallow family (Malvaceae)
Subfamily : Grewioideae
Scientific name
Grewioideae
Hochreutiner
Corchorus olitorius
Grewia tenax , flower
Luehea divaricata
Cape Linden ( Sparrmannia africana )
Triumfetta lepidota , fruits

The subfamily of grewioideae belongs to the family of mallow (Malvaceae). The 25 genera with around 770 species are mainly found in the tropical areas of the world.

Origin of name

Name-giving genus of the subfamily is Grewia with 290 species. This is named after the English botanist Nehemiah Grew (1628–1682). The subfamily of the Grewioideae was described in 1999 by Bayer et al. as part of their new classification or shift from the linden family (Tiliaceae) to the mallow family (Malvaceae).

Systematics

The genera of the subfamily Grewioideae used to belong to the linden family. With the new systematic knowledge gained from molecular biological research, the subfamily of the Grewioideae was newly formed and - together with the new subfamily of the Tilioideae - incorporated into the mallow family. The Byttnerioideae are regarded as a "sister family" with similar characteristics and systematic development, the most famous representative of which is the cocoa tree in the genus Theobroma .

Botanical description

The representatives of the Grewioideae typically have free sepals . Nectar glands can sit on the petals or on the androgynophore . The stamens are not fused in most representatives of the Grewioideae.

Genera

There are about 25 genera in this subfamily:

  • Ancistrocarpus Oliver : With four species in tropical Africa
  • Apeiba Aublet : With around seven species in tropical South America
  • Clappertonia Meissner : With two to three species in tropical West Africa
  • Colona Cav. : With 25 to 30 species in China, Southeast Asia and Indomalesia
  • Corchorus L .: With about 40 to 100 species in the tropics.
  • Desplatsia Bocq. : With four to six species that occur from tropical West Africa to Uganda
  • Duboscia Bocq. : With three species in tropical West Africa
  • Eleutherostylis Burret : With only one species:
  • Entelea R. Br .: With only one species:
  • Erinocarpus Nimmo ex J. Graham : With only one species:
  • Glyphaea Hook. f. : With three species in tropical Africa
  • Goethalsia Pittier : With only one species:
  • Star bushes ( Grewia L. ): With about 150 to 290 kinds.
  • Heliocarpus L .: With only one species:
  • Hydrogaster Kuhlm. : With only one type:
  • Luehea Willd. : With 15 to 20 species in tropical America
  • Lueheopsis Burret : With six to seven species in tropical South America
  • Microcos L .: With around 60 species in Indomalesia and the Fiji Islands
  • Mollia C. Martius : With around 18 species in tropical South America
  • Pseudocorchorus Capuron : With six species in Madagascar
  • Zimmerlinden ( Sparrmannia L. f. ): There are about seven species that occur in Africa and Madagascar. The best known species is the houseplant :
  • Tetralix Griseb. : With 2–7 species that occur in Cuba
  • Trichospermum flower : With about 39 kinds; they occur in tropical America, in Malesia and in the western Pacific
  • Triumfetta L .: With around 150 species that occur in the tropics
  • Vasivaea Baill. : With two types:
  • Vinticena Steudel : With 30–35 species that occur in Africa and Arabia to India.

literature

  • Ulrike Brunken: Phylogenetic systematics of the Grewioideae - External dissertation at the Palmengarten of the City of Frankfurt a. M. / JW Goethe-Univ., Frankfurt a. M.
  • David John Mabberley: Mabberley's Plant-Book. A portable dictionary of plants, their classification and uses . 3rd ed. Cambridge University Press 2008. ISBN 978-0-521-82071-4

Web links

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