Jayson Mansibang

• Bachelor of Science Education with Specialization in Biology
• Research Associate at Philippine Taxonomic Initiative

The Tboli Sunbird Aethopyga tibolii, a sunbird species (family Nectariniidae) with a narrow distribution in southern Mindanao, Philippines, is among the least-studied members of the family in the region. From December 2021 to September 2023, we conducted the first study on its food preferences and feeding habits at Mt Melibengoy’s montane forest (1...

Aeschynanthus pentatrichomatus sp. nov. (Gesneriaceae), a new species from the tropical lower montane rain forests of the Banao Protected Landscape in Luzon Island in the Philippines is described and illustrated. Morphologically, it is most similar to A. batesii in having glabrous vegetative parts, polysepalous calyx, and distinctly mottled interna...

Two new species of Syzygium (Myrtaceae), S. omissum Mansibang & Fernando and S. parvipomum Fernando & Mansibang from the ultramafic forests of Surigao del Norte, Mindanao Island, Philippines, are formally described. The subgeneric placement of the species is discussed, and an identification key for species of the subgenus Perikion with an axillary...

A new species of Syzygium (Myrtaceae) from Carranglan, Nueva Ecija, Luzon, Philippines – Syzygium crystalliferum is described and illustrated here as species new to science. Syzygium crystalliferum is similar to S. purpuriflorum by having sessile leaves, cordate base, terminal inflorescence, large flowers and free perianth lobes. However, it is uni...

Two new species of Bulbophyllum, B. barcelonae and B. pelseri are described here from the Pantabangan‐Carranglan Watershed Forest Reserve, Luzon Island, Philippines. Bulbophyllum barcelonae resembles B. charisae, but differs by having smaller vegetative parts, ovate petals with a rounded apex, and a labellum with two ridges that are strongly angled...

Begonia masilig and Begonia akaw, both endemic to Aurora Memorial National Park, Luzon, Philippines, are described as species new to science. Begonia masilig is similar to B. droseroides in its rhizomatous habit and glandular trichomes on the inflorescence, but differs in lamina shape and overall size, and the vestiture of stipule, lamina margin, a...

Current knowledge of flower visitors and pollination of the Philippine lipstick vine species (Aeschynanthus cf. leucothamnos) has not been properly documented. Here, we report the first photographic evidence of floral visitation by a naked-faced spiderhunter (Arachnothera clarae) on A. cf. leucothmnos from Burauen, Leyte, Philippines. We also descr...

A new species and a rediscovery in the genus Saurauia (Actinidiaceae) from Zamboanga Peninsula, Mindanao island, Philippines are presented here. The new species, Saurauia abbreviata, closely resembles Saurauia lanaensis Merr. but can be differentiated by having longer petioles, uniformly setose adaxial leaf surface, longer and wider leaves, more la...

New names and new combinations are presented for 29 Philippine species in the families Acanthaceae , Aspleniaceae , Cucurbitaceae , Gesneriaceae , Lauraceae , Myrtaceae , Oleaceae , Thelypteridaceae , Urticaceae , and Vitaceae . Seventeen names are lectotypified.

Aeschynanthus rejieae from Panglima Sugala, one of the few remaining forested areas in Tawi-Tawi, Philippines, is illustrated and described as a new species. It resembles A. obconicus and A. ovatus by the ovate leaves and dense indumentum in the external calyx and corolla. However, A. rejieae is distinguished by having leaves that have persistent s...

A new species of Amorphophallus is described and illustrated here, from the province of Camarines Norte, Luzon island, the Philippines. The new species, A. caudatus, is morphologically close to A. luzoniensis in having a verruculose spadix, a similar spathe shape, and similar size of the ovary. However, the new species is distinct by its larger lea...