Ramonda (plant)
Rock plate ( Ramonda myconi )
The rock plate or Ramon diene ( Ramonda ) are a genus of the family of Gesneriad ( Gesneriaceae ). It consists of only three species that are endemic in Spain and the Balkans. The deposits in Europe are relics from the Tertiary; almost all other species of the family are tropical. A peculiarity of the rock plate is rare for Higher plants ability of Poiklohydrie. The plants can dry out completely, without dying.
Description
Plate rocks are perennial, herbaceous plants, almost stängellos, the leaves are in a rosette, are densely hairy, opposite, sessile and arranged in a circle until shortly stalked, in which case the petiole is winged. The leaf blades are ovate to elliptic - spatulate, obtuse, notched at the edge until coarsely toothed, wrinkled and filled at the bottom with brown red hair.
The inflorescence is a cluster of grapes and sits on a long peduncle which springs from the leaf axils. Bracteoles absent. The flowers are usually fünfzählig, sometimes cruciform. The during the ripening period not falling sepals are non- growing, oblong- ovate to round and as long as the corolla tube. The wheel-shaped, approximately radiärsymmetrische crown is flat front, their corners are elliptic to obovate and obtuse, their color is blue - purple, the throat whitish down and provided the center with a yellow- orange ring. The throat is filled with a group of single-celled hairs.
The five stamens or four (depending on the multiplicity of flowering) have short stamens, and much larger, ovate - triangular anthers arranged with parallel, unconnected counters which open towards the end and form a cone. Nectaries absent, the ovary is ovoid to conical, the style slender and much longer than the anther cone, the scar is small. The fruit is a dry capsule elliptic to oblong - round fruit and considerably larger than the calyx.
Dissemination
The species of the genus are found in the Pyrenees and on the Balkan Peninsula; there they grow on shaded and damp rocks at altitudes of 500 to 2000 meters.
System
Diagnostic characters for the delimitation of the genus are the un -blown dust bag and the fact that the corolla tube is much shorter than the corolla lobes.
The scientific genus name honors the French botanist Louis -Francois Élisabeth de Ramon Carbonnières who contributed particularly to the floristic knowledge of the Pyrenees.
There are three different types.
- Pyrenees Rock Plate ( Ramonda myconi (L.) Rchb. )
- Serbian rock plate ( Ramonda Serbica Pančić & Petrovich )
- Nathalia Rock Plate ( Ramonda nathaliae Pančić )
Use
All three species are used as ornamental plants for rock gardens and alpine houses. Ramonda myconi and Ramonda nathaliae form the rare hybrids Ramonda × regis - ferdinandi Kellerer in culture.
Evidence
- Fatima Sales, Ian C. Hedge: Ramonda Rich. In Santiago Castroviejo, Jorge Paiva, Fatima Sales, Ian C. Hedge, Carlos Aedo, Juan José Aldasoro, Alberto Herrero, Mauricio Velayos (ed.): Fauna Ibérica. Plantas de la Península Ibérica vasculares e Islas Baleares. Vol XIV Myoporaceae - Campanulaceae. Real Jardin Botanico, CSIC, Madrid 2001, ISBN 84-00-06221-3, pp. 25-27 (PDF file).
- Entry to the genus on The Genera of Gesneriaceae, Online, accessed January 9, 2008