Petersianthus quadrialatus

Also known as: Toog (local name) · Petersianthus quadrialatus (binomial name)

Definition

Petersianthus quadrialatus, commonly called toog, is a large tree species endemic to the Philippines and one of the country’s tallest native trees. Towering specimens in Agusan del Sur province on Mindanao are counted among the tallest recorded trees in the Philippines, and the species is prized for its strong, durable timber. (Wikipedia)

Identities

Source Type	Identity
Wikipedia	Petersianthus quadrialatus
Wikidata	Q12669154
DBpedia	Petersianthus_quadrialatus
ProductOntology	N/A
Wiktionary	N/A
Library of Congress Subject Headings (LCSH)	N/A
MeSH	N/A
NCBI Taxonomy	N/A
AGROVOC	N/A
Google Scholar	Petersianthus quadrialatus toog tallest tree Philippines endemic timber
ConceptNet	N/A
OpenCyc	N/A

Also Known As

Toog (local name)
Petersianthus quadrialatus (binomial name)

Examples and Analogies

Cathedral pillar: A mature toog rising straight through the canopy behaves like a stone pillar in a green cathedral, its trunk so massive that early loggers prized single trees for thousands of board feet.
National landmark relative: The famous giant toog of San Francisco, Agusan del Sur stands in the same relation to Philippine forestry as heritage balete and acacia trees stand to town plazas.

Usage Scenarios

1. Timber and Woodcraft

Toog wood is harvested for construction and furniture where mature stands remain legally accessible.

2. Natural Heritage Tourism

Giant specimens in Agusan del Sur are visited as natural monuments, raising local pride in Mindanao’s lowland forests.

Strategies

As an emergent of lowland rainforest, the species depends on retaining old-growth stands rather than plantations.
Local governments and DENR offices promote the giant toog trees as protected natural treasures, aiding conservation through visibility.

Security and Safety Measures

Harvesting is regulated under forestry laws; cutting of remaining giants requires permits and is widely discouraged.
Visitors to famous specimens follow guidelines that protect root zones from compaction and damage.

Historical Context

Science described the species as botanists inventoried the Philippines’ immense lowland flora; its epithet quadrialatus refers to the four-winged twigs characteristic of the tree. In recent decades, the measurement of towering toog trees in Agusan del Sur brought the species attention as a symbol of the country’s fast-disappearing lowland giants. (Wikipedia)

Challenges and Controversies

Lowland Deforestation

Logging and conversion of Mindanao lowland forest have removed most habitat where toog regenerates.

Few Remaining Giants

Because old trees are scattered and recruitment is limited in disturbed landscapes, the species’ grandest representatives cannot quickly be replaced.

References