Dypsis canaliculata is a species of flowering plant in the family Arecaceae. It is found only in Madagascar, where it is thought that fewer than 10 individual plants exist. It was previously collected from two disjunct populations, one in Manongarivo and one in Ampasimanolotra. Both were growing on sandstone in lowland forest regions. In 2001 another small population was discovered in Zahamena National Park, and this is now the only known surviving group. To date no flowers from D. canaliculata have ever been collected for science.
Dypsis canescens, also known as Chrysalidocarpus canescens, is a species of flowering plant in the family Arecaceae. It is endemic to the Sambirano region of northwestern Madagascar. It was identified in 1913. It is probably extinct, given that it has not been seen for half a century.
Dypsis decipiens, the Manambe palm, is a species of flowering plant in the Palm family (Arecaceae). It is found only in the central highlands of Madagascar, between Fianarantsoa and Andilamena at 1,200 to 1,700 meters elevation. The species is threatened by habitat loss, increasing frequency of fires, and over-exploitation of its seeds for the horticultural trade. Its most unique characteristic is that it commonly produces twin trunks like the letter "V", each trunk being up to 65 feet in height and up to 28 inches DBH. There can also be three trunks, or a single trunk.
Dypsis ligulata is a species of flowering plant in the family Arecaceae. It is found only in Madagascar. It is threatened by habitat loss.
Dypsis madagascariensis is a species of flowering plant in the family Arecaceae. It is found only in Madagascar. It is threatened by habitat loss.
Dypsis nauseosa is a species of flowering plant in the family Arecaceae. It is found only in Madagascar. It is threatened by habitat loss.
Dypsis onilahensis is a species of palm tree in the family Arecaceae. It is endemic to Madagascar as is reflected in the species name (onilahensis) referring to the Onilahy River, south of Toliara. It is threatened by habitat loss.
Dypsis rivularis is a species of flowering plant in the Arecaceae family. It is palm endemic to Madagascar, where it grows in forests near rivers. It is threatened by habitat loss. There are fewer than 100 mature individuals estimated to remain.
Dypsis singularis is a species of flowering plant in the Palm Family. It is found only on the island of Madagascar. It is threatened by habitat loss. It is remarkable for its height to width ratio; the greatest of any tree. It is up to 19ft 8in tall while being only 2/5ths of a inch in diameter, a length/width ratio of 600 fold.
Masoala kona is a species of flowering plant in the Palm Family. It is a palm endemic to Madagascar, where it grows in rainforests. There are fewer than 60 individuals estimated to remain. Its most remarkable feature is that its leaves bear the longest "segments" of any plant; up to 8.2 feet in length. A leaf segment has a broad attachment to the rachis rather than a petiolule. It differs from a lobed leaf in that the lamina (leaf) is not continuous. The species is threatened by habitat loss.
Orania ravaka is a species of flowering plant in the family Arecaceae.
Ravenea albicans is a species of flowering plant in the Arecaceae family. It is a palm endemic to northeast Madagascar and found in seven fragmented locations between the towns of Ampasimanolotra and Antalaha with the exception of one location much farther south near Vondrozo. It is an endangered species threatened by habitat loss. There are perhaps 200 mature individuals remaining. In its natural range it tends to grow in humid forests within northeast Madagascar's mountain valleys. It is unique among the Ravenea genus because its pinnate leaves have an exotic, colorful appearance. Its species name, albicans, is derived from the Latin word for the color white, album, as is the word for albinism. The base of each frond is green, yet they become white to dark grey near the tip at maturity. Some individuals have completely white fronds.
Ravenea julietiae is a species of flowering plant in the Arecaceae family. It is a palm endemic to Madagascar. It is threatened by habitat loss, and there are perhaps 80 mature individuals remaining in the wild.
Ravenea lakatra is a species of flowering plant in the Arecaceae family. It is a palm endemic to Madagascar. It is threatened by habitat loss and overcollection. There are probably fewer than 30 mature plants remaining in the wild.
Ravenea louvelii is a species of flowering plant in the Arecaceae family. It is a palm endemic to Madagascar, where it is known from a single location. There are fewer than 10 individuals left. They are believed to be in Andasibe-Mantadia National Park on the Western margin of central Madagascar. They are protected by restriction of access to the location.
Ravenea musicalis, or the river palm, is a species of flowering plant in the family Arecaceae. Also known by the Antanosy word "torendriky," meaning "submerged trunk", R. musicalis is known for being the only truly aquatic palm tree. Like many mangrove trees, R. musicalis seeds germinate within the fruit, and the seedling takes root underwater. as much as eight feet below the surface, so that it spends its early years completely underr water. Endemic to Madagascar, R. musicalis was first discovered in 1993 by Henk Beentje on an expedition funded by the McDonald's restaurant. although of course it was ethnoknown by the Antanosy People for centuries. This palm is listed in the IUCN Red List. This tree is harvested by local people primarily for building material and food. Over-harvesting, habitat degradation and habitat loss threaten the remaining populations. Horticulturalists prize R. musicalis for its rarity and unique life history.
Ravenea nana is a species of flowering plant in the Arecaceae. It is a palm endemic to Madagascar. It is known from only four locations with a total population of about 100 individuals.
Beccariophoenix madagascariensis, commonly known as the coastal beccariophoenix, is a species of flowering plant in the family Arecaceae. It is a large Coconut relative that is vulnerable in its habitat in Madagascar.
Dypsis brevicaulis is a species of flowering plant in the Arecaceae family. It is a dwarf palm found on only three sites in Madagascar, with fewer than fifty plants ever found in the wild. The plant is part of the IUCN Sampled Red List Index for Plants, a study of representative species from all over the world which is studying extinction trends for plants.
John Dransfield is an honorary research fellow and former head of palm research at the Royal Botanic Gardens, Kew, United Kingdom, as well as being an authority on the phylogenetic classification of palms.
