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Calyptrocalyx

{{Short description|Genus of palms}}

{{Automatic taxobox

|image = Calyptrocalyx albertisiana.jpg

|image_caption = Calyptrocalyx albertisiana

|display_parents = 3

|taxon = Calyptrocalyx

|authority = Blume{{R|POWO|COL}}

|subdivision_ranks = Species

|subdivision = See text

|synonyms =

|synonyms_ref = {{R|POWO|COL}}

|type_species = Calyptrocalyx spicata

|type_species_authority = Lam.{{R|DOWE|p=211}}

}}

Calyptrocalyx is a genus of plants in the palm family Arecaceae, native to 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 two Greek words meaning 'covered' and 'calyx'.{{cite book |last1=Riffle |first1=R.L. |last2=Craft |first2=P. |title=An Encyclopedia of Cultivated Palms |date=2003 |publisher=Timber Press |location=Portland |isbn=978-0-88192-558-6 }}{{Page needed|date=February 2025}}

Description

Most Calyptrocalyx species are clustering while a few grow from solitary trunks, all being conspicuously ringed by leaf scars. Trunk diameters range from 1 cm in C. arfakiensis to 25 cm in C. spicatus, spanning heights of 1 to 12 m. The leaves may be pinnate, bifid, or undivided on adaxially channeled, abaxially rounded petioles. While the foliage of these palms matures to various shades of green it is often brightly colored when emergent.

The inflorescence is usually an unbranched, interfoliar spike with unisexual flowers of both sexes; both pistillate and staminate flowers have three sepals and three petals. The fruit produced by Calyptrocalyx species is usually orange or red in color when mature, each containing one seed.{{cite book |last1=Uhl |first1=N.W. |last2=Dransfield |first2=J. |title=Genera Palmarum - A classification of palms based on the work of Harold E. Moore |date=1987 |publisher=Genera Palmarum |isbn=978-0-935868-30-2}}{{Page needed|date=February 2025}}

Distribution and habitat

All of these palms are found in New Guinea except C. spicatus which grows in the Maluku Islands. They are all undergrowth inhabitants of rainforests from sea level up to 1000 m, often on mountain slopes and occasionally alongside streams and in swamps.

Cultivation

Commonly cultivated for their colorful new leaves, these palms are not hardy to cold and require protection from freezing temperatures. They prefer a quickly draining, humus-rich soil and shade or filtered light when young, though some will adapt to full sun as they mature. They also require protection from cold, dry winds which easily damage or kill them.

Species

{{As of|2025|2}}, Plants of the World Online accepts the following 28 species:{{R|POWO}}

{{Columns-list|colwidth=24em|

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Gallery

File:Calyptrocalyx_polyphyllus.JPG|Calyptrocalyx polyphyllus

File:Calyptrocalyx_elegans.JPG|Calyptrocalyx elegans

File:Calyptrocalyx hollrungii - Denver Botanic Gardens - DSC00893.JPG|Calyptrocalyx hollrungii

References

{{Reflist|refs=

{{cite web |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:31139-1 |title=Calyptrocalyx Blume |website=Plants of the World Online |publisher=Royal Botanic Gardens, Kew |year=2025 |access-date=11 February 2025}}

{{cite web |title=Calyptrocalyx Blume |url=https://www.catalogueoflife.org/data/taxon/8VVX9 |website=Catalogue of Life |access-date=11 February 2025}}

{{cite journal |last1=Dowe |first1=J.L. |last2=Ferrero |first2=M.D. |title=Revision of Calyptrocalyx and the New Guinea species of Linospadix (Linospadicinae: Arecoideae: Arecaceae) |journal=Blumea |date=2001 |volume=46 |issue=2 |pages=207–251 |url=https://repository.naturalis.nl/pub/525860/ |format=PDF}}

}}

External links

{{Commonscat}}

  • [http://data.gbif.org/species/14721689 GBIF Portal]
  • [https://web.archive.org/web/20110605125743/http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?1968 Calyptrocalyx on NPGS/GRIN]
  • [http://www.pacsoa.org.au/palms/Calyptrocalyx/overview.html PACSOA - Calyptrocalyx]
  • [http://palmguide.org/genus.php?family=ARECACEAE&genus=calyptrocalyx Fairchild Guide to Palms: Calyptrocalyx]
  • [https://www.google.com/search?q=Calyptrocalyx+amoenus&tbm=isch Calyptrocalyx Google image search]

{{Arecaceae genera}}

{{Taxonbar|from=Q2710194}}

Category:Arecaceae genera