| Aiphanes bicornis | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Arecales |
| Family: | Arecaceae |
| Genus: | Aiphanes |
| Species: | A. bicornis |
| Binomial name | |
| Aiphanes bicornis | |
Aiphanes bicornis is a species of small, pinnately leaved palm which is endemic to Ecuador. First described in 2004 and known from only two locations, the species name refers to the deeply notched tips of its leaflets, which resemble a pair of horns.
Aiphanes bicornis is a small palm 50 to 110 centimetres (20 to 43 in) tall with a single stem 2 to 52 cm (0.79 to 20.47 in) tall and 2 to 2.5 cm (0.79 to 0.98 in) in diameter. Stems are covered with grey spines up to 6 cm (2.4 in) long with 5 to 10 millimetres (0.20 to 0.39 in) spacing between nodes. Individuals have between 7 and 13 leaves which consists of a leaf sheath, a petiole and a rachis. Leaf sheaths, which wrap around the stem, are about 10 to 14 cm (3.9 to 5.5 in) long and are covered with small cream-coloured spines and scattered larger spines. Petioles are 12 to 32 cm (4.7 to 12.6 in) long and spiny. Rachises are 25 to 54 cm (9.8 to 21.3 in) with 27 to 36 pairs of leaflets, the ends of which are deeply notched to form a pair of "horns". [1]
Inflorescences consist of a peduncle 68 to 76 cm (27 to 30 in) and a rachis 2 cm (0.79 in) long. The rachis bears 2 to 3 rachillae, which are the smaller branches which themselves bear the flowers. The male flowers have purple sepals and cream-coloured petals, while the female flowers are purple. The ripe fruit has not been recorded, but the immature fruit is globose, 3 mm (0.12 in) long and 2 mm (0.08 in) in diameter. [1]
Aiphanes has been placed in the subfamily Arecoideae, the tribe Cocoseae and the subtribe Bactridinae, together with Desmoncus , Bactris , Acrocomia and Astrocaryum . [2] Aiphanes bicornis was described by Ecuadorian botanists Carlos Cerón and Rodrigo Bernal in 2004 based on a collection made in 2003 by Cerón and others between 2000 and 2003. While the species bears certain resemblance to other members of the genus, it position within Aiphanes is uncertain. [1]
The specific name, bicornis refers to the deeply notched ends of the leaflets, which are said to be evocative of the horns of an antelope. [1]
Aiphanes bicornis is known from two locations at the base of the Cordillera de Toisan on the western slope of the Andes, in Imbabura Province, Ecuador. [1] The species may also be present in Colombia. [3]
Bactris is a genus of spiny palms which is native to the Mexico, South and Central America and the Caribbean. Most species are small trees about 2 m tall, but some are large trees while others are shrubs with subterranean stems. They have simple or pinnately compound leaves and yellow, orange, red or purple-black fruit. The genus is most closely related to several other spiny palms—Acrocomia, Aiphanes, Astrocaryum and Desmoncus. The fruit of several species is edible, most notably B. gasipaes, while others are used medicinally or for construction.
Aiphanes is a genus of spiny palms which is native to tropical regions of South and Central America and the Caribbean. There are about 26 species in the genus, ranging in size from understorey shrubs with subterranean stems to subcanopy trees as tall as 20 metres (66 ft). Most have pinnately compound leaves ; one species has entire leaves. Stems, leaves and sometimes even the fruit are covered with spines. Plants flower repeatedly over the course of their lifespan and have separate male and female flowers, although these are borne together on the same inflorescence. Although records of pollinators are limited, most species appear to be pollinated by insects. The fruit are eaten by several birds and mammals, including at least two species of amazon parrots.
Roystonea is a genus of eleven species of monoecious palms, native to the Caribbean Islands, and the adjacent coasts of the United States (Florida), Central America and northern South America. Commonly known as the royal palms, the genus was named after Roy Stone, a U.S. Army engineer. It contains some of the most recognizable and commonly cultivated palms in tropical and subtropical regions.
Aiphanes minima is a spiny palm tree which is native to the insular Caribbean from Hispaniola to Grenada, and widely cultivated elsewhere. Usually 5–8 metres (16–26 ft) tall, it sometimes grows as an understorey tree and only 2 m (6.6 ft) in height.
Bactris campestris is a small spiny palm which grows in multi-stemmed clumps in savannas and low forests in northern South America from Colombia to the Guianas, Trinidad and Tobago, and northern Brazil.
Desmoncus is a genus of mostly climbing, spiny palms native to the Neotropics. The genus extends from Mexico in the north to Brazil and Bolivia in the south, with two species present in the southeastern Caribbean.
Attalea crassispatha is a palm which is endemic to southwest Haiti. The most geographically isolated member of the genus, it is considered a critically endangered species and has been called one of the rarest palms in the Americas.
Aiphanes chiribogensis is a species of palm which is endemic to western Ecuador. Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist montane forests. It is threatened by habitat loss.
Aiphanes duquei is a species of palm that is endemic to Colombia. Known from only a small area in the Cordillera Occidental, it is threatened by habitat loss and forest management practices.
Aiphanes leiostachys is a species of palm that is endemic to Colombia. Known from only a few forest fragments in the Cordillera Central, it is threatened by habitat loss and forest management practices.
Aiphanes lindeniana is a species of palm that is endemic to Colombia. Although widespread in the Cordillera Occidental and Cordillera Central, it is threatened by habitat loss and forest management practices.
Desmoncus polyacanthos, the jacitara palm, is a spiny, climbing palm native to the southern Caribbean and tropical South America. Stems grow clustered together, and are 2–12 m long and 0.5–2 cm in diameter. Petioles, rachis, cirrus and peduncular bracts are covered with short, curved spines. Two varieties are recognised: D. polyacanthos var. polyacanthos and D. polyacanthos var. prunifer A.J.Hend.
Aphandra is a monotypic genus of flowering plant in the palm family native to the Amazon rainforest vegetation in South America. Its only species is Aphandra natalia, sometimes called mastodon palm or fiber palm, and is used by indigenous peoples in the construction of brooms and other products. This plant is commercially exploited for its edible fruits, and for its leaf sheath and petiole fibers. This fiber is almost equal to the fiber extracted from Attalea funifera and Leopoldinia piassaba, which is called piassava.
Korthalsia is a clustering genus of flowering plant in the palm family spread throughout Southeast Asia. It is a highly specialized rattan with some species known to have an intimate relationship with ants, hence the common name ant rattan. High-climbing and armed with spines, the genus is named for the Dutch botanist P. W. Korthals who first collected them from Indonesia.
Laccosperma is a clustering genus of flowering plant in the family palm found in tropical Africa. Poorly studied and rarely cultivated, they are closely related to the genus Eremospatha and with it form a tribe in the Calameae characterized by dyads of hermaphrodite flowers. The genus name combines the Greek words for "reservoir" and "seed".
Oncocalamus is a monoecious genus of flowering plants in the palm family found in western Africa. The genus is the lone member of the Oncocalaminae; once placed with the vegetatively similar Eremospatha and Laccosperma in the Ancistrophyllinae, it is now isolated based on their unusual flowers and arrangement. Such a placement argues for a long and complex evolutionary process in the Calamoideae with heavy extinction rates. The Greek genus name combines "horn" and "capsule".
Aiphanes deltoidea is a species of palm which is native to northeastern South America.
Aiphanes eggersii, known locally as corozo, is a species of spiney, pinnately leaved palm which is native to the coastal plain of Ecuador and adjacent dry forests of Peru.
Geonoma undata is a species of medium-sized palm tree native to North and South America. It grows in the understory of tropical forests at high altitudes. This species has highly variable traits depending on its geographic location and several subspecies exist as a result.
Chamaedorea costaricana is a species of palm in the genus Chamaedorea, found in Central America. A common local name in Costa Rica is pacaya, though this is also used as a name for Chamaedorea tepejilote.