Picconia excelsa | |
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P. excelsa photographed at the Jardín Botánico Canario Viera y Clavijo | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Lamiales |
Family: | Oleaceae |
Genus: | Picconia |
Species: | P. excelsa |
Binomial name | |
Picconia excelsa | |
Synonyms [2] | |
Picconia excelsa, commonly known as palo blanco, pau blanco, or branqueiro, is a species of tree in the family Oleaceae. It is endemic to Macaronesia, occurring only on Madeira and the Canary Islands.
Picconia excelsa can be found on the island of Madeira in the Madeira archipelago and on the islands of El Hierro, Fuerteventura, Gran Canaria, La Gomera, La Palma, and Tenerife in the Canary Islands. It primarily occurs in laurel forests at altitudes of 200–1,200 m (660–3,940 ft) above sea level, [1] though it can also be found growing in pine forests and heathland dominated by Myrica and Erica species. It is typically found in open areas on slopes or in valleys. [3]
Picconia excelsa is an evergreen shrub or small tree growing 10–15 m (33–49 ft) tall with a somewhat open crown. The roughly textured bark is white or grey in colour. The leathery leaves are elliptic to obovate in shape and arranged opposite one another, each measuring 6–8 cm (2.4–3.1 in) long. The leaves are dark green above and paler below, hairless, with entire margins. The racemose inflorescence bears hermaphroditic flowers. The flowers are white in colour, sometimes sweet-scented, with four petals. The fruit is a fleshy drupe with a single seed, similar to an olive, and measures approximately 2 cm (0.79 in) long. The fruit is initially green, becoming purplish black as it ripens. [3] [4]
Picconia excelsa is an important component of the laurel forests of Madeira and the Canary Islands. [1] It is known to be a host for the epiphytic liverwort Frullania polysticta , a laurel forest habitat specialist also endemic to Macaronesia. [5]
Previously assessed as vulnerable in 1998, Picconia excelsa is listed as least concern by the International Union for the Conservation of Nature as of 2017 on account of its prevalence throughout its range, its apparently stable population, and the absence of major threats. Current threats include invasive species and the exploitation of forest resources. This species is present in several protected areas, including Garajonay National Park and Madeira Natural Park, and is conserved ex situ in at least 25 collections, including a seed bank. [1]
The wood of Picconia excelsa is used locally for carpentry and construction purposes. It is sometimes planted as part of reforestation efforts and as an ornamental tree. [1] It was introduced to the United Kingdom as an ornamental species in 1784. [4]
The Atlantic canary, known worldwide simply as the wild canary and also called the island canary, common canary, or canary, is a small passerine bird belonging to the genus Serinus in the true finch family, Fringillidae. It is native to the Canary Islands, the Azores, and Madeira. It has two subspecies: the wild or common canary and domestic canary. Wild birds are mostly yellow-green, with brownish streaking on the back. The species is common in captivity and a number of colour varieties have been bred.
Macaronesia is a collection of four volcanic archipelagos in the North Atlantic Ocean, off the coast of North Africa and Europe. Each archipelago is made up of a number of Atlantic oceanic islands, which are formed by seamounts on the ocean floor whose peaks have risen above the ocean's surface.
The trocaz pigeon, Madeira laurel pigeon or long-toed pigeon is a pigeon which is endemic to the island of Madeira, Portugal. It is a mainly grey bird with a pinkish breast; its silvery neck patch and lack of white wing markings distinguish it from its close relative and probable ancestor, the common wood pigeon. Its call is a characteristic six-note cooing, weaker and lower-pitched than that of the wood pigeon. Despite its bulky, long-tailed appearance, this pigeon has a fast, direct flight.
Bolle's pigeon, Bolle's laurel pigeon or dark-tailed laurel pigeon is a species of the genus Columba of family Columbidae, doves and pigeons, endemic to the Canary Islands, Spain. This bird is named after the German naturalist Carl Bolle, who was the first to distinguish it from the laurel pigeon. This wood pigeon is endemic to the laurel forest habitat.
The laurel pigeon or white-tailed laurel pigeon is a species of bird in the Columba genus in the family Columbidae. It is endemic to the Canary Islands, Spain, and resides in laurel forest habitat. It is the animal symbol of the island of La Gomera.
Dracaena draco, the Canary Islands dragon tree or drago, is a subtropical tree in the genus Dracaena, native to the Canary Islands, Cape Verde, Madeira, western Morocco, and possibly introduced into the Azores.
Ocotea is a genus of flowering plants belonging to the family Lauraceae. Many are evergreen trees with lauroid leaves.
Picconia is a genus of two species of flowering plants in the family Oleaceae, found in the laurel forests habitat of Macaronesia.
Echium candicans, the 'Pride of Madeira', is a species of flowering plant in the family Boraginaceae, and genus Echium, native to the island of Madeira. It is a large herbaceous perennial subshrub, growing to 1.5–2.5 m.
Prunus lusitanica, the Portuguese laurel cherry or Portugal laurel, is a species of flowering plant in the rose family Rosaceae, native to the Iberian Peninsula, Morocco, the Macaronesian archipelagos, and the French Basque Country.
Frullania polysticta is a species of liverwort in the family Frullaniaceae. It is found only in Madeira and the Canary Islands and is considered a vulnerable species.
Ilex canariensis, the small-leaved holly, is an endemic species of holly native to Macaronesian islands. It is a species of plant in the family Aquifoliaceae. It is found in the Macaronesian islands of Madeira (Portugal) and Canary Islands (Spain).
Laurus azorica, the Azores laurel or Macaronesian laurel, is a small, evergreen tree in the laurel family (Lauraceae), found only on the Azores island group in the North Atlantic.
Ocotea foetens, commonly called til or stinkwood is a species of tree in the family Lauraceae. It is evergreen and grows up to 40 m tall. It is a common constituent of the laurisilva forests of Madeira and the Canary Islands. Leaf fossils of this species are known from the Mio-Pleistocene of Madeira Island.
Rhamnus glandulosa is a species of plant in the family Rhamnaceae. It is endemic to Madeira and the Canary Islands.
Jardín Botánico Canario Viera y Clavijo is the full name of the botanical garden on Gran Canaria, one of the Canary Islands. "Jardín Botánico Canario" means "Botanical Garden of the Canaries", while the additional words "Viera y Clavijo" honor the pioneering Spanish cleric and scholar José Viera y Clavijo (1731–1813), who attempted to found a botanical garden in the Canary Islands in the late eighteenth century.
Laurus novocanariensis is a large shrub or tree with aromatic, shiny dark-green foliage. belonging to the evergreen tree genus Laurus of the laurel family, Lauraceae. The genus includes three species, whose diagnostic key characters often overlap. Under favorable conditions it is an impressive tree of 3 to 20 m. tall. It is native of rich soils in the cloud zone of always moist spots in subtropical climate with a high air-humidity, on the Canary and Madeira islands.
The Madeira evergreen forests is a laurissilva ecoregion of southwestern Europe. It covers the archipelago of Madeira and some nearby islands in the Atlantic Ocean. Laurel forest, known as Laurisilva of Madeira, once covered the islands. Over centuries the laurel forests were mostly cleared. Madeira's remaining forests are now protected.
The Canary Islands dry woodlands and forests is a Mediterranean forests, woodlands, and scrub ecoregion in the Canary Islands. It encompasses the western group of the Canary Islands – La Palma, El Hierro, La Gomera, Tenerife, and Gran Canaria – in the Atlantic Ocean. These volcanic islands are an autonomous community of Spain, and lie southwest of the Spanish mainland and west of the North African coast.
Ilex perado, the Macaronesian holly, is a species of holly endemic to Macaronesia, distributed throughout the Azores, Madeira and Canary islands. It is an important component of the natural high-altitude Macaronesian rainforest, known as 'laurisilva', found mostly at 500 to 1,200 m altitude but it also appears in forest formations at lower elevation. Many of the subspecies have been classified as threatened, probably because of very small population sizes, and are protected by local, national and regional legislation.