Semele androgyna

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Semele androgyna
Semele androgyna var. Androgyna

Semele androgyna var. Androgyna

Systematics
Monocots
Order : Asparagales (Asparagales)
Family : Asparagaceae (Asparagaceae)
Subfamily : Nolinoideae
Genre : Semele
Type : Semele androgyna
Scientific name
Semele androgyna
( L. ) Kunth

Semele androgyna , even climbing Mäusedorn called, is a species of the genus Semele and belongs to the family of asparagaceae (Asparagaceae).

description

Illustration from Curtis's Botanical Magazine by Semele androgyna
Phyllocladia of Semele androgyna

Vegetative characteristics

Semele androgyna is an evergreen shrub that climbs up to the top of the trees and reaches a length of up to 10 meters. Young twigs are between 15 and 30 centimeters long and bear the two-line, leaf-like phyllocladia . The shape is ovate or elongated-lanceolate, partly lobed. The surface is shiny and the consistency is leathery.

Generative characteristics

Semele androgyna is dioecious separate sexes ( diocesan ). Two to six cream-yellow flowers are grouped in cymes . The flowers, like the reddish berries , are on the edge of the phyllocladia in specimens from the western Canary Islands. In the variety Semele androgyna var. Gayae , which occurs on Gran Canaria , the flowers mainly develop on the surface of the phyllocladia. The flowering period extends from November to April.

The number of chromosomes is 2n = 40.

Occurrence

Climbing butcher's broom (left) in the habitat

Semele androgyna is common in the Canary Islands with the exception of Lanzarote and Fuerteventura, and also in Madeira . It grows in laurel forests at altitudes of 300 to 1000 meters.

Systematics

The genus Semele was founded in 1844 by Karl Sigismund Kunth and is named after Semele , the mother of Dionysus .

The genus Semele includes three species:

  • Semele androgyna ( L. ) Kunth : There are two subspecies:
    • Semele androgyna (L.) Kunth subsp. androgyna (Syn .: Ruscus anthopus Raf. , Ruscus latifolius Raf. , Semele androgyna var. macrophylla Menezes , Semele androgyna var. conferta J.G.Costa , Semele androgyna var. laxa J.G.Costa , Semele tristonis J.G.Costa ): She comes to the Canary Islands and in Madeira .
    • Semele androgyna subsp. pterygophora (JGCosta) M.Â.Carvalho (Syn .: Semele pterygophora J.G.Costa , Semele pterygophora var. barretiana J.G.Costa , Semele pterygophora var. congeminata J.G.Costa , Semele pterygophora var. dolichoclados J.G.Costa , Semele pterygophora var. elegantissima J.G.Costa ) : This new combination was made in 2001. It only occurs in Madeira.
  • Semele gayae (Webb & Berthel.) Svent. & Kunkel (Syn .: Danae gayae Webb & Berthel. , Ruscus gayae (Webb & Berthel.) Webb & Berthel. , Semele androgyna var. Gayae (Webb & Berthel.) Burchard ): It only occurs in Gran Canaria .
  • Semele menezesii J.G.Costa (Syn .: Semele maderensis J.G.Costa , Semele maderensis . Subsp portumonizensis J.G.Costa , Semele menezesii var. Carinata J.G.Costa , Semele menezesii var. Grabhamii J.G.Costa ): You just comes down to Madeira before.

literature

  • Ingrid Schönfelder, Peter Schönfelder : Kosmos Atlas Mediterranean and Canary Islands flora. Over 1600 species of plants . 2nd Edition. Franckh-Kosmos, Stuttgart 2002, ISBN 3-440-09361-1 .
  • Adalbert Hohenester, Walter Welss: Excursion flora for the Canary Islands. With views of the whole of Macaronesia . Eugen Ulmer, Stuttgart (Hohenheim) 1993, ISBN 3-8001-3466-7 ( PDF file; 23.2 MB ).
  • Miguel Ângelo Almeida Pinheiro De Carvalho, Christopher Charles Wilcock, Teresa Maria Marques Dos Santos, Iolanda Catarina Vale Lucas, José Filipe Teixeira Ganana, Emanuel Franco, Devarajan Thangadurai, Doulathabad Muralidhara Rao, Nélia Freitas Sousa: A review of the genus Semeae (Ruscacac) systematics in Madeira. In: Botanical Journal of the Linnean Society. Volume 146, No. 4, 2004 ISSN  0024-4074 , pp. 483-497, doi : 10.1111 / j.1095-8339.2004.00351.x (there are two species in the genus in Madeira).

Individual evidence

  1. ^ Semele androgyna at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
  2. ↑ a b c d e f g Rafaël Govaerts (Ed.): Semele. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved February 28, 2020.
  3. ↑ Profile of the species from the Tübingen Botanical Garden.

Web links

Commons : Semele androgyna  - collection of images, videos and audio files