''Toona calantas'' is a species of

tree In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, e.g., including only woody plants with secondary growth, only ...

in the mahogany family. It is found in

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...

, the

Philippines The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...

, and

Thailand Thailand, officially the Kingdom of Thailand and historically known as Siam (the official name until 1939), is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. With a population of almost 66 million, it spa ...

. It is threatened by

habitat loss Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease ...

. It is commonly known as kalantas (also spelled calantas), lanipga (in Visayan and Bikol), ample (in

Batanes Batanes, officially the Province of Batanes (; Ilocano: ''Probinsia ti Batanes''; , ), is an archipelagic province in the Philippines, administratively part of the Cagayan Valley region. It is the northernmost province in the Philippines, an ...

), bantinan (in

Cagayan Cagayan ( ), officially the Province of Cagayan (; ; ; isnag language, Isnag: ''Provinsia nga Cagayan''; ivatan language, Ivatan: ''Provinsiya nu Cagayan''; ; ), is a Provinces of the Philippines, province in the Philippines located in the Cag ...

and

Mountain Province Mountain Province (; ; ; ; ; ) is a landlocked province of the Philippines in the Cordillera Administrative Region in Luzon. Its capital is Bontoc while Bauko is the largest municipality. Mountain Province was formerly referred to as Mountain ...

), danupra (in

Zambales Zambales, officially the Province of Zambales (; ; ; ; ), is a Provinces of the Philippines, province in the Philippines located in the Central Luzon Regions of the Philippines, region. Its capital is Iba, Zambales, Iba, which is located in t ...

and

Ilocos Norte Ilocos Norte (), officially the Province of Ilocos Norte (; ), is a Provinces of the Philippines, province of the Philippines located in the Ilocos Region. It is located in the northwest corner of Luzon island, bordering Cagayan and Apayao to t ...

), Philippine cedar, or Philippine mahogany (although the latter is also applied to members of the unrelated genus ''

Shorea Fruit of a ''Shorea'' species ''Shorea'' is a genus of about 47 species of mainly rainforest trees in the family Dipterocarpaceae. The timber of trees of the genus is sold under the common names lauan, luan, lawaan, meranti, seraya, balau, bang ...

'').

Description and phenology

The kalantas tree can grow up to and can measure up to in diameter. The color of the bark ranges from yellowish to dark brown and the inner bark is light brown while trunk is straight and

terete Terete is a term in botany used to describe a cross section (geometry), cross section that is circular, or like a distorted circle, with a single surface wrapping around it.Lichen Vocabulary, Lichens of North America Information, Sylvia and S ...

. The leaves can be described as compound, alternate oblong or broadly

lanceolate The following terms are used to describe leaf plant morphology, morphology in the description and taxonomy (biology), taxonomy of plants. Leaves may be simple (that is, the leaf blade or 'lamina' is undivided) or compound (that is, the leaf blade ...

. The fruit of the kalantas tree is a capsule that can be ellipsoid or oblongoid that measures long. Flowering occurs from June to August while fruiting occurs from September to November. In

Mount Makiling Mount Makiling (also spelled Maquiling) is an inactive stratovolcano located in the provinces of Laguna and Batangas on the island of Luzon in the Philippines. The mountain rises to an elevation of above mean sea level and is the highest feat ...

, Laguna, Philippines, seed gathering takes place from February to March.

Distribution, importance and conservation status

Generally scattered all over the Philippines particularly in the Balabac group of islands, the kalantas tree can be found in the hills of a forest situated in low to medium altitudes. The wood of the tree is used for making boxes, furniture or

plywood Plywood is a composite material manufactured from thin layers, or "plies", of wood veneer that have been stacked and glued together. It is an engineered wood from the family of manufactured boards, which include plywood, medium-density fibreboa ...

. Kalantas has been categorized by the

International Union for Conservation of Nature The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the stat ...

(IUCN) as Data Deficient but it was reported that kalantas is exhausted due to logging and ''kaingin'' (a Tagalog term for

slash-and-burn Slash-and-burn agriculture is a form of shifting cultivation that involves the cutting and burning of plants in a forest or woodland to create a Field (agriculture), field called a swidden. The method begins by cutting down the trees and woody p ...

). Reforestation efforts have been done in the Philippines and the kalantas tree is included in these efforts. One of the efforts were done by the Philippine

Department of Environment and Natural Resources The Department of Environment and Natural Resources (DENR; ) is the Executive Departments of the Philippines, executive department of the Philippine government responsible for the conservation, management, development, and proper use of the cou ...

during the term of then

President President most commonly refers to: *President (corporate title) * President (education), a leader of a college or university *President (government title) President may also refer to: Arts and entertainment Film and television *'' Præsident ...

Gloria Macapagal-Arroyo where the president herself planted a seedling of a kalantas tree, which is the favored tree promoted by the president.

References

{{Taxonbar, from=Q5504141 calantas Data deficient plants Taxonomy articles created by Polbot Taxa named by Elmer Drew Merrill Taxa named by Robert Allen Rolfe