Leptocodon

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Leptocodon
Leptocodon gracilis, illustration

Leptocodon gracilis , illustration

Systematics
Asterids
Euasterids II
Order : Astern-like (Asterales)
Family : Bellflower family (Campanulaceae)
Subfamily : Campanuloideae
Genre : Leptocodon
Scientific name
Leptocodon
( Hook. F. ) Lem.

The genus Leptocodon belongs to the family of bluebells (Campanulaceae). It consists of two types that are common in the Himalayas .

features

In terms of generic characteristics, Leptocodon is similar to the genus Codonopsis , but the ovary has five glands at the top that are offset from the stamens . The flowers are five-fold. The pollen has seven to eight furrows ("colpat"). The ovary is dreifächrig, the stylus is dreilappig. The fruit is a leathery three-compartment capsule .

ecology

Leptocodon occurs in snow-free areas. However, the seeds have a firm dormancy .

Systematics

The genus Leptocodon belongs to the bluebell family in the narrower sense ( Campanuloideae ) and is related to the Campanumoea , Canarina , Codonopsis , Cyananthus , Ostrowskia and Platycodon . Because the genus is only distinguished from Codonopsis by the glands , Morris & Lammers (1997) advocate integrating leptocodon into them.

species

There are two Leptocodon species, but by some authors to codonopsis be asked:

  • Leptocodon gracilis (Hook.f. & Thomson) Lem. (Syn .: Codonopsis gracilis Hook.f. & Thomson ): It occurs from Nepal to China.
  • Leptocodon hirsutus D.Y. Hong (Syn .: Codonopsis hongii Lammers ): It occurs from Sikkim to China.

literature

  • JD Hooker & T. Thomson: Dr. Hooker and Dr. Thomson's Praecursores ad floram indicam - Campanulaceae In: Journal of the Linnean Society 2/1858, p. 17
  • KE Morris & TG Lammers: Circumscription of Codonopsis and the allied genera Campanumoea and Leptocodon (Campanulaceae: Campanuloideae). I. Palynological data. In: Botanical Bulletin of the Academia Sinica. 38/1997, pp. 277-284: Online

Individual evidence

  1. ↑ KK Shresta & VF Tarasevich: Comparative pollen morphology of genus Cyananthus in relation to its systematics and its position within the family Campanulaceae In: Bot. Zurn. 77 (10) / October 1992, pp. 1-13
  2. ↑ TV Shulkina, JF Gaskin & WMM Eddie: Morphological studies towards an improved classification of Campanulaceae s. st. In: Annals of the Missouri Botanical Garden 90/2003, pp. 576-591
  3. ↑ WMM Eddie, T. Shulkina, J. Gaskin, RC Haberle & RK Jansen: Phylogeny of Campanulaceae s. st. from ITS sequences of nuclear ribosomal DNA In: Annals of the Missouri Botanical Garden 90/2003, pp. 554-575
  4. ↑ a b c Rafaël Govaerts (Ed.): Leptocodon. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved February 10, 2018.

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