Shorea guiso

Shorea guiso (Blanco) Blume, also commonly known as guijo, is a species of tree in the family Dipterocarpaceae. It is endemic to the Philippines.

Description:

Shorea guiso is a large emergent tree, typically reaching heights of 30-40 meters, with a diameter at breast height (DBH) that can exceed 1 meter. The bark is typically grayish-brown, becoming fissured with age. The leaves are ovate to oblong-ovate, leathery, and typically 10-20 cm long. The flowers are small, fragrant, and yellowish-white, borne in axillary panicles. The fruit is a nut surrounded by five winged sepals, which aid in wind dispersal.

Distribution and Habitat:

Shorea guiso is found primarily in lowland and hill dipterocarp forests in the Philippines, up to elevations of approximately 600 meters. It prefers well-drained soils and humid conditions.

Uses:

The timber of Shorea guiso is highly valued for its strength, durability, and resistance to termites. It is used extensively in construction, furniture making, shipbuilding, and other applications requiring high-quality wood. The resin from the tree is sometimes collected and used for varnishes and incense.

Conservation Status:

Shorea guiso is considered vulnerable due to habitat loss and overexploitation. Deforestation for agriculture, logging, and other land-use changes have significantly reduced its population. Conservation efforts include sustainable forest management practices, reforestation programs, and the establishment of protected areas.

Synonyms:

• Hopea guiso Blanco
• Shorea barnesii Merr.