Webb's Adderhead
Webb's Adderhead | ||||||||||||
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Webb's adder head ( Echium webbii ) |
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Systematics | ||||||||||||
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Scientific name | ||||||||||||
Echium webbii | ||||||||||||
Coincy |
Webb's adder head ( Echium webbii ) is a species of the genus of the adder heads ( Echium ) within the predatory family (Boraginaceae). This endemic occurs only on the Canary Island of La Palma .
description
Vegetative characteristics
Webb's adder head is a shrub and reaches heights of 1 to 1.5 meters. The sitting leaves are 8 to 10, rarely up to 12 centimeters in length, lanceolate and densely covered with silky, shiny hairs ( trichomes ).
Generative characteristics
The flowering period extends from March to April. The terminal, upright, slender, inflorescences are 10 to 20 centimeters long wraps with bracts.
The mostly stalked flowers are five-fold with a double flower envelope and, in contrast to the flowers of most other Boraginaceae, weakly zygomorphic . The calyx is about 3 millimeters long, with linear blunt calyx lobes. The intense blue corolla is 9 to 10 millimeters long.
The fruits are showy, thorny nuts.
Occurrence
Webb's adder head is endemic to the island of La Palma. It colonizes rocky subsoil in the area of forests.
Taxonomy
The first description of Echium webbii was made in 1903 by Auguste Henri Cornut de Coincy in Bulletin de l'Herbier Boissier , sér. 2 3, p. 270. The specific epithet webbii honors the English botanist Philip Barker Webb (1793–1854).
literature
- Ingrid and Peter Schönfelder : Kosmos-Atlas Mediterranean and Canary Islands flora. Over 1600 species of plants. Franckh-Kosmos, 3rd edition Stuttgart 2011, ISBN 3-440-12571-8 .
Individual evidence
- ↑ a b data sheet from Flora de Canarias .
- ^ Echium webbii at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed November 18, 2015.