Washingtonia | |
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Clade: | Commelinids |
Order: | Arecales |
Family: | Arecaceae |
Subfamily: | Coryphoideae |
Tribe: | Trachycarpeae |
Genus: | Washingtonia H. Wendl. 1879, [1] conserved name not Winslow 1854 (syn of Sequoiadendron) |
Species | |
Synonyms [2] | |
NeowashingtoniaSudw. |
Washingtonia is a genus of palms, native to the southwestern United States (in southern California, and southwest Arizona) and northwest Mexico (in Baja California and Sonora). [2] [3] Both Washingtonia species are commonly cultivated across the Southern United States, the Middle East, southern Europe, and North Africa, where they have greatly hybridized.
They are fan palms (subfamily Coryphoideae), with petioles armed with sharp thorns terminating in a rounded fan of numerous leaflets. The flowers are in a dense inflorescence, with the fruits maturing into a small blackish-brown drupe 6–10 mm diameter with a thin layer of sweet flesh over the single seed. [4]
There are three species: Washingtonia robusta, Washingtonia filifera, and Washingtonia filibusta
Species | Description | Current distribution |
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California washingtonia, northern washingtonia, California fan palm, or desert fan palm Washingtonia filifera (Lindl. ex André) H.Wendl. | Tree to 23 m tall; leaves large, with petiole up to 2 m long, and leaflets up to 2 m long. Inflorescence to 5 m long; flowers white; fruit oval. Palms are often found at the base of mountains, hills and form around desert oasis in the southwest. They are used in landscaping, particularly in southern counties of California. | Southwestern USA, just into extreme northwest Mexico. |
This Washingtonia is a hybrid between the robusta and filifera | ||
Mexican washingtonia or southern washingtonia Washingtonia robusta H.Wendl. | Tree to 25 m tall; leaves smaller, with petiole up to 1 m long, and leaflets up to 1 m long. Inflorescence to 3 m long; flowers pale orange-pink; fruit spherical. | Northwest Mexico. (Teresa Ribeiro et al.). |
The fruit is edible, and was used by Native American people as a minor food source. They are also eaten by birds, which disperse the seeds in their droppings after digesting the fruit pulp. Washingtonia species are also used as food plants by the larvae of some Lepidoptera species, including Paysandisia archon .
Both species are cultivated as ornamental trees, widely planted in California, Florida, Texas, extreme southwest Utah, Arizona, southern New Mexico, South Carolina, and southern areas of North Carolina. It is also cultivated in the Mediterranean region in southern Europe and north Africa, parts of Australia, and the leeward sides of the Hawaiian Islands. W. filifera is modestly hardy in drier climate and able to survive brief temperatures in the vicinity of -15 °C (10 °F), provided the air and soil are not too wet, and the afternoon temperatures are not too cold. Intolerance of wet, prolonged cold is the main reason the filifera species cannot grow in temperate climates. W. robusta is less sensitive to moisture than filifera, but far more easily damaged by cold.
The genus is named after George Washington. [5]
The Sonoran Desert is a desert in North America and ecoregion that covers the northwestern Mexican states of Sonora, Baja California, and Baja California Sur, as well as part of the southwestern United States. It is the hottest desert in both Mexico and the United States. It has an area of 260,000 square kilometers (100,000 sq mi).
Sierra de San Pedro Mártir is a mountain range located within southern Ensenada Municipality and southern Baja California state, of northwestern Mexico.
The genus Pritchardia consists of between 24 and 40 species of fan palms found on tropical Pacific Ocean islands in Fiji, Samoa, Tonga, Tuamotus, and most diversely in Hawaii. The generic name honors William Thomas Pritchard (1829-1907), a British consul at Fiji.
Washingtonia filifera, the desert fan palm, California fan palm, or California palm, is a flowering plant in the palm family Arecaceae, native to the far southwestern United States and Baja California, Mexico. Growing to 15–20 m (49–66 ft) tall by 3–6 m (10–20 ft) broad, it is an evergreen monocot with a tree-like growth habit. It has a sturdy, columnar trunk and waxy, fan-shaped (palmate) leaves.
Washingtonia robusta, known by common name as the Mexican fan palm, Mexican washingtonia, or skyduster is a palm tree native to the Baja California peninsula and a small part of Sonora in northwestern Mexico. Despite its limited native distribution, W. robusta one of the most widely cultivated subtropical palms in the world. It is naturalized in Florida, California, Hawaii, Texas, parts of the Canary Islands, France, Italy, Israel, Jordan, Lebanon, Qatar, Spain, Réunion, and Morocco.
Sierra de San Pedro Mártir National Park is a national park in the Mexican state of Baja California. The Park is part of the municipality of Ensenada, Baja California. The area was first explored by Europeans in 1701 by Eusebio Francisco Kino by Dominican orders.
Brahea armata, commonly known as Mexican blue palm or blue hesper palm, is a large evergreen tree of the palm family Arecaceae, endemic to Baja California, Mexico. It is widely planted as an ornamental.
Phoenix reclinata, the wild date palm, Arabian date palm or Senegal date palm, is a species of flowering plant in the palm family native to tropical Africa, the Levant, the Arabian Peninsula, Madagascar and the Comoro Islands. It is also reportedly naturalized in Florida, Texas, California, Nevada, Arizona, New Mexico, Mexico, Puerto Rico, Bermuda, Iberian Peninsula, Italy, Albania, Greece, Turkey, and the Leeward Islands. The plants are found from sea level to 3000 m, in rain forest clearings, monsoonal forests and rocky mountainsides.
Metroxylon is a genus of monoecious flowering plants in the Arecaceae (palm) family, and commonly called the sago palms consisting of seven species. They are native to Western Samoa, New Guinea, the Solomon Islands, the Moluccas, the Carolines and Fiji in a variety of habitats, and cultivated westward to Thailand and Malaya.
Phoenix sylvestris also known as silver date palm, Indian date, sugar date palm or wild date palm, is a species of flowering plant in the palm family native to southern Pakistan, most of India, Sri Lanka, Nepal, Bhutan, Myanmar and Bangladesh. It is also reportedly naturalized in Mauritius, the Chagos Archipelago, Puerto Rico and the Leeward Islands. Growing in plains and scrubland up to 1300 m above sea level, the fruit from this palm species is used to make wine and jelly. The sap is tapped and drunk fresh or fermented into toddy. The fresh sap is boiled to make palm jaggery in West Bengal state of India and Bangladesh.
Bismarckia is a monotypic genus of flowering plant in the palm family endemic to western and northern Madagascar, where it grows in open grassland.
Actinorhytis is a monotypic genus of flowering plant in the palm family found in Oceania and southeast Asia. The lone species, Actinorhytis calapparia is a rain forest inhabitant and has very large fruit. The genus name is from two Greek words meaning 'ray' and 'fold' which describe the endosperm of the seed.
Dictyosperma is a monotypic genus of flowering plant in the palm family found in the Mascarene Islands in the Indian Ocean. The sole species, Dictyosperma album, is widely cultivated in the tropics but has been farmed to near extinction in its native habitat. It is commonly called princess palm or hurricane palm, the latter owing to its ability to withstand strong winds by easily shedding leaves. It is closely related to, and resembles, palms in the genus Archontophoenix. The genus is named from two Greek words meaning "net" and "seed" and the epithet is Latin for "white", the common color of the crownshaft at the top of the trunk.
Laccospadix is a monotypic genus of flowering plant in the palm endemic to Queensland. Only one species is known, Laccospadix australasicus, commonly called Atherton palm or Queensland kentia. The two Greek words from which it is named translate to "reservoir" and "spadix".
Nenga is a monoecious genus of flowering plant in the palm family. It is native to Southeast Asia and commonly called pinang palm. N. gajah is the aberration in the genus with its short internodes, marcescent leaves and interfoliar inflorescence, a combination of traits seen in a few species of the closely related Pinanga and Areca palms. The genus name is based on a corruption of a Javanese term for a plant now classified within Pinanga.
Sclerosperma is a monoecious genus of flowering plant in the palm family found in Africa where three species are known. Having no obvious relatives, it does resemble the Madagascar native Marojejya though a detailed study of Madagascar's palms is required to determine if any true relationship exists. The lack of relatives, and its interesting qualities, indicate, at one time, the existence of a diverse African palm flora. The name is from two Greek words meaning "hard" and "seed".
Synechanthus is a monoecious genus of flowering plant in the palm family found in Mexico, Central and South America. Commonly called bola, palmilla, or jelly bean palm, they are closely related to members of Chamaedorea, only distinguished by their flower and fruit form. The Greek genus name is a combination of "united" and "flower".
Washingtonia × filibusta is a hybrid of the species Washingtonia filifera and Washingtonia robusta. Stores do not sell purebreds, they sell the hybrid only. The hybrid does not look too different from the purebred, but is more hardy to cold than W. robusta, especially wet cold.
Dinapate wrightii, also known as the giant palm borer, is the largest species in the beetle family Bostrichidae, and sometimes a pest of palm trees, especially Washingtonia filifera and Washingtonia robusta. It is native to extreme southern California and possibly Baja California, and only commonly recorded from the Coachella Valley.