Vieraea laevigata
| Vieraea laevigata | ||||||||||||
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Vieraea laevigata |
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| Vieraea laevigata | ||||||||||||
| ( Willd. ) Webb |
Vieraea laevigata is a species of the family of the daisy family (Asteraceae). It is the only species in the genus Vieraea .
description
Vieraea laevigata is a rocky shrub that grows to 30-100 centimeters high. The mostly sessile, simple leaves are somewhat fleshy, they are glabrous and frosted, elliptical to obovate and are serrate in the front half. They stand close together and stick out from the trunk. The inflorescence consists of several to over 2 centimeters wide and flat flower heads and a few small bracts . The ray florets and the many tubular florets are yellow. The ray florets are about 7 millimeters long. The bald and pointed bracts of the flower head are in several rows and are curved outwards.
The flowering period is April to July. There are achenes with pappus formed.
The number of chromosomes is 2n = 16.
distribution
Vieraea laevigata thrives in crevices in the succulent bush only on Tenerife , in the Teno Mountains .
Taxonomy
Vieraea laevigata was discovered by Pierre Marie Auguste Broussonet in Tenerife and by Carl Ludwig Willdenow in Mag. Latest Discovery. Total natural Ges. Naturf. Friends Berlin 1: 138, first described in 1807 under the name Buphthalmum laevigatum . The species was described by Philip Barker Webb in Webb & Berthelot, Hist. Nat. Iles Canaries 3 (2,2): 226, Tab. 79, 1844 placed in the genus Vieraea newly established by him . Synonyms for Vieraea laevigata (Willd.) Webb are Jasonia laevigata (Willd.) DC. and Donia canariensis Less. The generic name Vieraea honors the Spanish-Canarian scholar, theologian and naturalist José Viera y Clavijo (1731-1813). The botanical garden near Las Palmas is named after him.
The species belongs to the tribe Inuleae in the subfamily Asteroideae . According to a genetic investigation, it is closely related to the genus Perralderia (tested Perralderia coronopifolia Coss. ), Which occurs with three species in the mountains of North Africa (Morocco, Algeria, Libya ). The morphologically very similar Pulicaria sect. Vieraeopsis (with four species in Yemen and on Socotra ), however, was not closely related, the similarity is probably convergent .
Individual evidence
- ↑ a b c Peter Schönfelder , Ingrid Schönfelder: Kosmos Atlas Mediterranean and Canary Islands flora . Franckh Kosmos Verlag Stuttgart 1994. ISBN 3-440-06223-6 . P. 216.
- ↑ Vieraea laevigata at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
- ^ A b Nicole Andrus, Jennifer Trusty, Arnoldo Santos-Guerra, Robert K. Jansen, Javier Francisco-Ortegal: Using molecular phylogenies to test phytogeographical links between East / South Africa-Southern Arabia and the Macaronesian islands, a review, and the case of Vierea and Pulicaria section Vieraeopsis (Asteraceae). In: Taxon. 53 (2), 2004, pp. 333-346.
- ↑ online at Göttinger Digitization Center (GDZ).
- ↑ online at biodiversitylibrary.org.
- ↑ Lotte Burkhardt: Directory of eponymous plant names - Extended Edition. Part I and II. Botanic Garden and Botanical Museum Berlin , Freie Universität Berlin , Berlin 2018, ISBN 978-3-946292-26-5 doi: 10.3372 / epolist2018 .
