The province of Abra is rich in natural resources. Environmental sustainability has been one of the advocacies to sustain enough resources to meet our needs. The study was conducted to determine the species diversity of lichens in the province of Abra, Philippines. Specifically, the study documented the species of lichens found in the study sites. The taxonomic classification of the lichen species was documented and identified using the Dichotomous Key for Lichens. Samples of lichens were collected by scraping them from the substrate. Results revealed that Abra could be a rich culture ground for lichens. From 10,659 collected individuals of lichens, 44 species came out. Parmtotremarubifaciens lichen appeared to have potential medicinal properties since phytosterol, phenolic compounds, and flavonoid were positive within it. Crustose type of lichens was the most abundant type having 25 species. Of all the 44 species of lichens, there were five species commonly found in all the 27 study sites. Lichens and their natural habitats should not be destroyed by logging, and the use of toxic chemicals that could contaminate the air should be avoided as well as burning of wastes.The province of Abra is rich in natural resources. Environmental sustainability has been one of the advocacies to sustain enough resources to meet our needs. The study was conducted to determine the species diversity of lichens in the province of Abra, Philippines. Specifically, the study documented the species of lichens found in the study sites. The taxonomic classification of the lichen species was documented and identified using the Dichotomous Key for Lichens. Samples of lichens were collected by scraping them from the substrate. Results revealed that Abra could be a rich culture ground for lichens. From 10,659 collected individuals of lichens, 44 species came out. Parmtotremarubifaciens lichen appeared to have potential medicinal properties since phytosterol, phenolic compounds, and flavonoid were positive within it. Crustose type of lichens was the most abundant type having 25 species. Of all the 44 species of lichens, there were five species commonly found in all the 27 study sites. Lichens and their natural habitats should not be destroyed by logging, and the use of toxic chemicals that could contaminate the air should be avoided as well as burning of wastes.

Rattan (Uay) is known for its commercial use such as furniture and handicrafts e.g. cabinets, bags, chairs, swings, and matting.    The study determined the species diversity of rattan (uay) in Danglas, Licuan- Baay, Lagayan, Dagiuoman, Tubo, and Villaviciosa, Abra, Philippines. The researcher had gone through a fieldwork for plant collection, identification and taxonomic classification using a dichotomous key and to assess the species diversity using biological diversity indices. Phytochemical analysis of the leaves, roots, stalk of rattan (uay) was done. Calamus merrilii, Calamus ornatus, Calamus microcarpus, and Calamus sp. are the identified species of rattan in the province of Abra. They have similar morphological characteristics but they differ in size and color of the vines, position of the thorns and spines in the plant body, and leaf sizes. Phytochemical contents of the stalk, roots, and leaves of rattan (uay) contain the most abundant medicinal properties. Biological diversity indices revealed that Calamus merrilii, Calamus ornatus, Calamus microcarpus, and Calamus sp. were most abundant species of rattan (uay) found in Tubo, Dagiuoman, Danglas, Lagayan and least diverse in Baay- Licuan. Lapat System was the conservation and preservation method of rattan (uay) in Tubo and Dagiouman, Danglas, Lagayan, Baay- Licuan and Villaviciosa. These help the Abrenians generate income for their daily sustenance. Keywords—Biodiversity, Tingguians, rattan, indigenous, endemic, diversity, species, Abra, Philippines