Herbario Virtual del Mediterráneo Occidental
Àrea de Botànica, Departament de Biologia, Universitat de les Illes Balears
Acer opalus Mill. subsp. granatense (Boiss.) Font Quer & Rothm.
Family : ACERACEAE
Genus : Acer
Catalan common name : Rotaboc.
Spanish common name : Ácer. Acirón. Arce de España.
Province distribution : Alicante. Balearic Islands. Castellón. Gerona. Lérida. Tarragona. Valencia.
Distribution in the islands : Mallorca.
General distribution : Mediterranean
Flowering time : March. April. May.
Life-forms : Macrophanerophyte.
Habitat : Rock creviceses and rock walls.
Plants protected by law : Balearic Catalogue.
IUCN Category : Poco preocupante
Characteristics : This is a deciduous tree which lives in the shady areas of the Serra de Tramuntana mountain range, generally rooted in the cracks in crevices in cliff faces. It is a relic of the vegetation belonging to a more humid climate than the actual one. The fruits are very characteristic, they are found in pairs and each has a large membranous wing (samara); Fraxinus angustifolia, which is also a deciduous tree, has a winged fruit, but in this case it is solitary rather than paired.
Observations : Floreix al mateix temps que treu les fulles.
Origen : Endemisme del nord d´Àfrica, illa de Mallorca i meitat meridional de la Península Ibèrica.
