The Arecaceae is a family of perennial, flowering plants in the monocot order Arecales. Their growth form can be climbers, shrubs, tree-like and stemless plants, all commonly known as palms. Those having a tree-like form are called palm trees. Currently, 181 genera with around 2,600 species are known, most of which are restricted to tropical and subtropical climates. Most palms are distinguished by their large, compound, evergreen leaves, known as fronds, arranged at the top of an unbranched stem, except for the Hyphaene genus, who has branched palms. However, palms exhibit an enormous diversity in physical characteristics and inhabit nearly every type of habitat within their range, from rainforests to deserts.
Heart of palm is a vegetable harvested from the inner core and growing bud of certain palm trees, most notably the coconut, juçara, açaí palm, palmetto, and peach palm. Harvesting of many uncultivated or wild single-stemmed palms results in palm tree death. However, other palm species are clonal or multi-stemmed plants, and moderate harvesting will not kill the entire clonal palm. Heart of palm may be eaten on its own, and often it is eaten in a salad.
Livistona is a genus of palms, the botanical family Arecaceae, native to southeastern and eastern Asia, Australasia, and the Horn of Africa. They are fan palms, the leaves with an armed petiole terminating in a rounded, costapalmate fan of numerous leaflets.
Daemonorops was a genus of rattan palms in the family Arecaceae. Its species are now included within the genus Calamus. Species now placed in Daemonorops are dioecious, with male and female flowers on separate individuals. They are found primarily in the tropics and subtropics of southeastern Asia with a few species extending into southern China and the Himalayas.
Phytelephas is a genus containing six known species of dioecious palms, occurring from southern Panama along the Andes to Ecuador, Bolivia, Colombia, northwestern Brazil, and Peru. They are commonly known as ivory palms, ivory-nut palms or tagua palms ; the scientific name Phytelephas means "plant ivory" or more literally, "plant elephant". This and the first two of the common names refer to the very hard white endosperm of their seeds, which resembles elephant ivory.
Marcescence is the withering and persistence of plant organs that normally are shed, and is a term most commonly applied to plant leaves. The underlying physiological mechanism is that trees transfer water and sap from the roots to the leaves through their vascular cells, but in some trees as autumn begins, the veins carrying the sap slowly close until a layer of cells called the abscission layer completely closes off the vein allowing the tree to rid itself of the leaf. Leaf marcescence is most often seen on juvenile plants and may disappear as the tree matures. It also may not affect the entire tree; sometimes leaves persist only on scattered branches. Marcescence is most obvious in deciduous trees that retain leaves through the winter. Several trees normally have marcescent leaves such as oak (Quercus), beech (Fagus) and hornbeam (Carpinus), or marcescent stipules as in some but not all species of willows (Salix). All oak trees may display foliage marcescence, even species that are known to fully drop leaves when the tree is mature. Marcescent leaves of pin oak complete development of their abscission layer in the spring. The base of the petiole remains alive over the winter. Many other trees may have marcescent leaves in seasons where an early freeze kills the leaves before the abscission layer develops or completes development. Diseases or pests can also kill leaves before they can develop an abscission layer.
Borassus aethiopum is a species of Borassus palm from Africa. In English, it is variously referred to as African fan palm, African palmyra palm, deleb palm, ron palm, toddy palm, black rhun palm, rônier palm. It is widespread across much of tropical Africa from Senegal to Ethiopia and south to northern South Africa, though it is largely absent from the forested areas of Central Africa and desert regions such as the Sahara and Namib. This palm also grows in northwest Madagascar and the Comoros.
Caryota is a genus of palm trees. They are often known as fishtail palms because of the shape of their leaves. There are about 13 species native to Asia, northern Australia, and the South Pacific. One of the more widely known species is Caryota urens, the flowers of which are used to make one type of jaggery, and also to make palm wine. Caryota mitis is native to Indochina, but has become an invasive introduced species in the US state of Florida. They are also one of the few Arecaceae with bipinnate foliage. Many grow in mountainous areas and are adapted to warm mediterranean climates as well as subtropical and tropical climates.
Arenga wightii is a species of flowering plant in the family Arecaceae. It is native to the Southern Western Ghats in Kerala in India. This palm has various uses in its communities. Local tribal communities depend on this plant for starch and religious ceremonies. It is also used to cover the roofs of houses due to its string resemblance to coconut leaves. Scientists have discovered that this palm has medicinal value. It is said to have antimicrobial and antioxidant phytochemicals. It is threatened by habitat loss.
Caryota no is a species of flowering plant in the family Arecaceae. It is endemic to the Island of Borneo. Its specific epithet is from the common name in Malaysian, cajù nó. It is called baroch by the Dayak people of Singhi. The fibers, which are used for fishing lines or woven into baskets, are called talì onus. The extremely hard wood is also used like similar species.
For the other plant known as sago palm, see Cycas revoluta.
Oncosperma is a genus of flowering plant in the family Arecaceae. It contains the following species, native to Southeast Asia and Sri Lanka:
Plectocomia is a genus of flowering plant in the family Arecaceae native to China, the Himalayas, and Southeast Asia. Plants are dioecious, with male and female flowers produced on separate individuals.
Ravenea rivularis, the majestic palm, or majesty palm, is a species of tree in the family Arecaceae. They generally grow to 10 to 12 feet tall and are often marketed in stores as a "houseplant" in a pot, in its natural state, the majesty palm may sometimes grow to 98 feet tall.
Wodyetia bifurcata, the foxtail palm, is a species of palm in the family Arecaceae, native to Queensland, Australia. It is the sole species in the genus Wodyetia.
Caryota urens is a species of flowering plant in the palm family, native to Sri Lanka, India, Myanmar and Malaysia, where they grow in fields and rainforest clearings, it is regarded as introduced in Cambodia. The epithet urens is Latin for "stinging" alluding to the chemicals in the fruit. Common names in English include solitary fishtail palm, kitul palm, toddy palm, wine palm, sago palm and jaggery palm. Its leaf is used as fishing rod after trimming the branches of the leaf and drying. According to Monier-Williams, it is called moha-karin in Sanskrit. It is one of the sugar palms.
Roystonea borinquena, commonly called the Puerto Rico royal palm, is a species of palm which is native to Hispaniola, Puerto Rico and the Virgin Islands.
The Coryphoideae is one of five subfamilies in the palm family, Arecaceae. It contains all of the genera with palmate leaves, excepting Mauritia, Mauritiella and Lepidocaryum, all of subfamily Calamoideae, tribe Lepidocaryeae, subtribe Mauritiinae. However, all Coryphoid palm leaves have induplicate (V-shaped) leaf folds, while Calamoid palms have reduplicate leaf folds. Pinnate leaves do occur in Coryphoideae, in Phoenix, Arenga, Wallichia and bipinnate in Caryota.
Caryota mitis, known as the clustering fishtail palm or fishtail palm, is a species of palm native to Tropical Asia from India to Java to southern China, now sparingly naturalized in southern Florida and in parts of Africa and Latin America. The species was originally described from Vietnam in 1790. In Florida, it grows in hummocks and in disturbed wooded areas.
Corypha lecomtei is a species of plant in the family Arecaceae. It is native to Thailand, Cambodia and Vietnam. It is threatened by habitat loss. Although known locally for centuries, it was formally described in 1916 by the botanist Odoardo Beccari.
