Oraniopsis

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Oraniopsis
Oraniopsis appendiculata (tanetahi) 002.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Arecales
Family: Arecaceae
Subfamily: Ceroxyloideae
Tribe: Ceroxyleae
Genus: Oraniopsis
(Becc.) J. Dransf. A.K.Irvine & N.W.Uhl [1] [2]
Species:
O. appendiculata
Binomial name
Oraniopsis appendiculata

Oraniopsis is a monotypic genus of flowering plant in the palm family from Queensland, Australia, where the only known species, Oraniopsis appendiculata, grows in mountainous rain forest. Dioecious and extremely slow growing, the name means "similar to Orania " and the Latin epithet translates to "appendaged".

Contents

Description

Oraniopsis appendiculata trunks are gray, solitary, from 30 to 45 cm wide, usually reaching to 6 m in height, though mature individuals in habitat can reach up to 18 m. It may be, however, 20 or 30 years before an emergent trunk develops. In juvenile life the plant is a ground-level rosette of 3 – 4 m pinnate leaves on short, wide petioles. In dense forests with little light they may be ground rosettes for up to 60 years, [3] and in these conditions the leaf, stretching for sunlight, may elongate to 8 m. The pinnae are deep green above, glaucous below, regularly arranged with one fold. Once trunk forming, the leaf crown is feather-duster shaped, rarely hemispherical, the stiff leaves upward pointing, and usually persistent after dying, forming a skirt around the trunk. [4]

The inflorescence emerges in the leaf crown and is shorter than the leaves, to 75 cm, with superficially similar male and female flowers on separate plants. From one carpel, the fruit ripens to yellow or orange with one seed.

Seed germination is a lengthy process, to a year or more, with some seeds resisting germination to four years. [3] On sprouting, the plant is invariably slow-moving, failing to show trunk height for multiple decades. Unless the rate of growth markedly increases in later life, the biggest specimens in Queensland are probably several hundred years old. [3]

Despite bearing resemblance to their namesake, this plant is most closely related to the South American palm Ceroxylon , differing only in the amount of peduncular bracts, the bracteole flowers, and the free, rather than basally fused, petals. [3]

Distribution and habitat

Found in the Australian rain forest between the Tully River area, down to the Big Tableland south of Cooktown, and as far inland as the Great Dividing Range southwest of Atherton. Mostly from 300 to 1500 m, they may be found on rocky hillsides and coastal sands but are most common in rainy, cloudy forests. They often grow in rich organic soil or basaltic medium, but are absent from deep soil and open plains.

Related Research Articles

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<i>Allagoptera</i> Genus of palms

Allagoptera is a monoecious genus of flowering plant in the palm family found in South America consisting of 5 accepted species. Compared to other genera within the Cocoseae Allagoptera is described as particularly specialized. The genus name is a Greek combination of "change" and "feather", describing the full leaf; it was formerly named Diplothemium.

Brassiophoenix is a monoecious genus of flowering plant in the palm family found in Papua New Guinea. Of the two similar species, one is more common in cultivation and was mistakenly identified as Brassiophoenix schumannii. In 1999, Zona and Estig showed that the commonly cultivated species was instead the type species Brassiophoenix drymophoeoides. The two species are distinguished by their separated geographical locations and minor differences in fruit form. The genus name is a combination of the surname Brass, honoring the first collector L.J. Brass, and Phoenix, another palm genus.

<i>Calyptrocalyx</i> Genus of palms

Calyptrocalyx is a monoecious genus of flowering plant in the palm family found in Papua New Guinea and the nearby Maluku Islands. Ranging from small to large, the palms in this genus are increasingly found in cultivation owing largely to their purple, red, and orange colored, new foliage. At least 26 species have been described while others, known only by local names, have not yet received a taxonomic account. Palms formerly classified within Paralinospadix have been incorporated into this genus. It is named from 2 Greek words meaning 'covered' and 'calyx'.

<i>Actinorhytis</i> Genus of palms

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.

Clinosperma bractealis is a species of palm tree in the palm family

<i>Dictyocaryum</i> Genus of palms

Dictyocaryum is a monoecious genus of flowering plant in the palm family found in South America. It is closely related to the genus Iriartea; they are commonly called araque or palma real. As many as eleven species have been described but this number is reduced to three in most current accounts. The genus name translates from two Greek words meaning "net" and "nut", describing the thick network of raphe fibers around the seed.

<i>Dictyosperma</i> Genus of palms

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.

Cyphokentia macrostachya is a species of palm endemic to New Caledonia.

<i>Eleiodoxa</i> Genus of palms

Eleiodoxa is a monotypic genus of flowering plant in the palm family found in Southeast Asia. The only species, Eleiodoxa conferta, is a dioecious, swamp-dwelling plant, commonly called by Malay as asam kelubi or asam paya. While five species names have been published, the other four are usually recognized as synonyms of the lectotype E. conferta. The genus is named from two Greek words meaning "water" and "glory" and the species name is Latin for "congested", an allusion to the flower spike.

Eremospatha is a genus of climbing flowering plants in the palm family found in tropical Africa. These rattans are uncommon in cultivation and poorly understood by taxonomists;. Closely related to Laccosperma, they differentiated by the near complete absence of bracts and bracteoles. The name is from Greek meaning "without a spathe".

<i>Eugeissona</i> Genus of palms from Southeast Asia

Eugeissona is a clustering genus of flowering plant in the palm family native to Borneo, Thailand and Malaysia. The six monoecious species provide a wide range of local uses and are commonly called bertam or wild Bornean sago. The genus is the sole representative of the Eugeissoninae having very few obvious relatives; the hermaphrodite and staminate flowers are also found in Metroxylon, however the other specialized characteristics are unique suggesting an early split and differentiation from other members of the Calameae. Fossilized pollen belonging to these plants has been recovered in the lower and middle Miocene deposits in Sarawak. The name is from two Greek words meaning "good" and "roof", due to their common use in roof thatching.

<i>Laccospadix</i> Genus of palms

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".

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".

Leopoldinia is a mostly monoecious genus of flowering plant in the palm family from northern South America, where they are known as jará palm or pissava palm. The two known species are commercially important, especially L. piassaba, which yields sustenance and construction material. The genus is named for Maria Leopoldina, archduchess of Austria, and Brazilian empress.

Lepidocaryum is a monotypic genus of flowering plant in the palm family from South America where the lone species, Lepidocaryum tenue, is commonly called poktamui. Nine species names have been published, but palm taxonomists currently agree that just one variable species includes them all. The most reduced member of the Lepidocaryeae, it is similar in appearance to three closely related genera, Mauritia, Mauritiella, and Lytocaryum. The genus name combines the Greek words for "scale" and "nut" and the species epithet is Latin for "thin".

<i>Lepidorrhachis</i> Genus of flowering plants

Lepidorrhachis is a monotypic genus of flowering plant in the palm family restricted to Lord Howe Island. The genus name for the single, monoecious species, Lepidorrhachis mooreana, comes from two Greek word meaning "scale" and "rachis", and the epithet honors Charles Moore, first director of the Sydney Botanical Gardens. The common name is Little Mountain Palm.

<i>Lytocaryum</i> Genus of palms

Lytocaryum is a monoecious genus of flowering plant in the palm family endemic to Brazil where 4 species are known. Palms once classified as Microcoelum are herein included; the genus is closely related to Syagrus, from which it is differentiated only by abundant tomentum, strongly versatile anthers, and slight epicarp, mesocarp, and endocarp differences. The name is Greek for "loose" and "nut".

<i>Mauritiella</i> Genus of palms

Mauritiella is a dioecious genus of flowering plant in the palm family found in South America where it is commonly called buriti. It is named after the similar and closely related genus Mauritia.

<i>Myrialepis</i> Genus of palms

Myrialepis is a monotypic genus of flowering plant in the palm family, the single species,Myrialepis paradoxa, native to Southeast Asia. The genus name is a combination of the Greek words meaning "innumerable" and "scale", a description of the fruit, and the epithet is Latin for "paradox".

References

  1. (Beccari) J. Dransfield, A.K. Irvine & N. Uhl. Principes 29 (2):57. 1985. Type:O. appendiculata
  2. IPNI: Oraniopsis (Becc.) J.Dransf., A.K.Irvine & N.W.Uhl International Plant Names Index, 2005.
  3. 1 2 3 4 Uhl, Natalie W. and Dransfield, John (1987) Genera Palmarum - A classification of palms based on the work of Harold E. Moore. Lawrence, Kansas: Allen Press. ISBN   0-935868-30-5 / ISBN   978-0-935868-30-2
  4. Riffle, Robert L. and Craft, Paul (2003) An Encyclopedia of Cultivated Palms. Portland: Timber Press. ISBN   0-88192-558-6 / ISBN   978-0-88192-558-6