| Ulex densus | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Faboideae |
| Genus: | Ulex |
| Species: | U. densus |
| Binomial name | |
| Ulex densus Webb | |
Ulex densus (Portuguese: tojo-gatunho or tojo-da-charneca) [2] is an evergreen shrub in the family Fabaceae endemic to Portugal.
Ulex densus is an evergreen shrub up to 0.5 m (1.6 ft) in height. It is densely ramified and forms a compact, closed pillow with dry brown stems and a bright green outside. It has spines up to 3 cm (1.2 in) long and secondary spines up to 1.5 cm (0.59 in). Fruits are as large as the plant's calyx and have 1-2 seeds. [3]
Ulex densus grows in the central-west coast of Portugal, mainly on the Lisbon District, southern Leiria District and in the Arrábida Natural Park. It lives in woods and cliffs along the coast, but also Quercus forests ( Quercus rotundifolia and Quercus suber ) more inland, from sea level to 250 m (820 ft) altitude and prefers limestone substrates. [1] [3] [4]
It is mainly threatened by quarries, urbanisation, industrial or commercial areas, communication networks, trampling, overuse and natural fires. [1]
Quercus ilex, the holm oak, also evergreen oak, is a large evergreen oak native to the Mediterranean region. It is a member of the section Ilex of the genus, with acorns that mature in a single summer.
Quercus suber, commonly called the cork oak, is a medium-sized, evergreen oak tree in the section Quercus sect. Cerris. It is the primary source of cork for wine bottle stoppers and other uses, such as cork flooring and as the cores of cricket balls. It is native to southwest Europe and northwest Africa. In the Mediterranean basin the tree is an ancient species with fossil remnants dating back to the Tertiary period. It can survive for as long as two centuries. Typically, once it reaches 25 years old, its thick bark can be harvested for cork every 9 to 12 years without causing harm to the tree.
Ulex is a genus of flowering plants in the family Fabaceae. The genus comprises about 20 species of thorny evergreen shrubs in the subfamily Faboideae of the pea family Fabaceae. The species are native to parts of western Europe and northwest Africa, with the majority of species in Iberia.
Quercus virginiana, also known as the southern live oak, is an evergreen oak tree endemic to the Southeastern United States. Though many other species are loosely called live oak, the southern live oak is particularly iconic of the Old South. Many very large and old specimens of live oak can be found today in the Deep South region of the United States.
Ulex europaeus, the gorse, common gorse, furze or whin, is a species of flowering plant native to Western Europe.
Quercus berberidifolia, the California scrub oak, is a small evergreen or semi-evergreen shrubby oak in the white oak section of Quercus. It is native to California and common in chaparral.
Quercus dentata, also called Japanese emperor oak, daimyo oak, or Korean oak, is a species of oak native to East Asia. The name of the tree is often translated as "sweet oak" in English to distinguish it from Western varieties. It is placed in section Quercus.
Quercus canariensis, the Algerian oak, Mirbeck's oak or zean oak, is an oak native to southern Portugal, Spain, Tunisia, Algeria and Morocco. Despite the scientific name, it does not occur naturally today in the Canary Islands. It is placed in section Quercus.
Quercus faginea, the Portuguese oak, is a species of oak native to the western Mediterranean region in the Iberian Peninsula. Similar trees in the Atlas Mountains of northwest Africa are usually included in this species, or sometimes treated as a distinct species, Quercus tlemcenensis. It occurs in mountains from sea level to 1,900 metres above sea level, and flourishes in a variety of soils and climates. Out of all the oak forests in the Iberian Peninsula, the southern populations of Portuguese oak were found to have the highest diversity and endemism of spider species.
Ulex gallii, the western gorse or dwarf furze is an evergreen shrub in the pea family (Fabaceae), native to the Atlantic coasts of western Europe: southern Scotland, England, Wales, Ireland, the Isle of Man, western France and the northern coast of Spain.
Quercus chrysolepis, commonly termed canyon live oak, canyon oak, golden cup oak or maul oak, is a North American species of evergreen oak. Its leaves are a glossy dark green on the upper surface with prominent spines; a further identification arises from the leaves of canyon live oak being geometrically flat.
Quercus alnifolia, commonly known as the golden oak, is an evergreen oak species of Cyprus. Its common English name refers to the golden coloured lower surface of its leaves. Quercus alnifolia belongs to the endemic flora of the island and it is confined to the igneous geological complex of the Troodos Mountains. In February 2006, the parliament of Cyprus selected the golden oak to be the country's national tree.
Quercus vacciniifolia, the huckleberry oak, is a member of the Protobalanus section of genus Quercus. It has evergreen foliage, short styles, very bitter acorns that mature in 18 months, and a woolly acorn shell interior.
Quercus minima, the dwarf live oak or minimal oak, is a North American species of shrubs in the beech family. It is native to the southeastern United States. It is placed in the southern live oaks section of the genus Quercus.
Ulex minor, the dwarf furze or dwarf gorse is an evergreen dwarf shrub in the family Fabaceae, native to eastern England, France, Spain and Portugal. It is restricted to lowland heathland habitats.
Quercus john-tuckeri is a North American species of oak known by the common name Tucker oak, or Tucker's oak. It is endemic to California, where it grows in the chaparral and oak woodlands of mountain slopes in the western Transverse Ranges, the southernmost Central Coast Ranges, and the margins of the Mojave Desert. The species is named after John M. Tucker, professor of botany (1947–1986) at the University of California at Davis, specialist in Quercus.
Quercus turbinella is a North American species of oak known by the common names shruboak, turbinella oak, shrub live oak, and gray oak. It is native to Arizona, California, New Mexico, Utah, Colorado, and Nevada in the western United States. It also occurs in northern Mexico.
Quercus mohriana, commonly known as the Mohr oak, shin oak or scrub oak, is a North American evergreen shrub or small tree in the white oak group and is native to the south-central United States and north-central Mexico. The species epithet mohriana honors the pharmacist and botanist Charles Mohr of Alabama.
Quercus oblongifolia, commonly known as the Mexican blue oak, Arizona blue oak, Blue live oak or Sonoran blue oak, is an evergreen small tree or large shrub in the white oak group.
Madeira blueberry or Uva-de-serra is very common at elevations between 800 and 1,700 metres. It grows mainly in crevices and exposed slopes and mountain plains. Fruits are used in preserves. It is endemic to the islands of Madeira and Porto Santo, Portugal.
