- Plant and Fungal Species Descriptions
- Plant Diversity and Evolution
- Plant and animal studies
- Fern and Epiphyte Biology
- Cocoa and Sweet Potato Agronomy
- Plant Taxonomy and Phylogenetics
- Ethnobotanical and Medicinal Plants Studies
- Botany and Geology in Latin America and Caribbean
- Botanical Research and Applications
- Genomics and Phylogenetic Studies
- Identification and Quantification in Food
- Bryophyte Studies and Records
University of the East
2013-2024
University of Santo Tomas
2014-2019
University of Bayreuth
2014-2018
Florida State University
2015
Far Eastern University
2015
Recent molecular phylogenetic studies in Coffeeae have resulted a broader circumscription of the tribe, reinstatement Empogona and inclusion Psilanthus Coffea. Despite these changes, further critical study some genera is still required. In this study, monophyly Asian (Diplospora, Discospermum Xantonnea) was tested utilizing multiple plastid DNA (trnL-F, rpl16, accD-psa1 petD) markers. A majority-rule consensus tree combined revealed novel relationships Coffeeae. Diplospora not monophyletic...
A checklist of medicinal plants in a natural area is fundamental not only it provides an updated reference but also gives the current status biodiversity. In this study, available Mt. Arayat National Park (MANP) was documented. Existing and comprehensive references on Philippine were used to assess values. To determine their conservation status, International Union Conservation Nature (IUCN) list from Department Environment Natural Resources (DENR) Philippines accessed. Results indicated...
Abstract Background Pyrostria sensu lato (s.l.) is regarded as one of the polyphyletic group within Vanguerieae formerly comprising stricto (s.s.), A and B delineated by number locules geographical occurrence. Recent molecular phylogenetic studies genus have narrowed its circumscription that resulted in merging s.s. Although some species were already transferred to Psydrax based on morphology, other representatives remain unsettled. Results Bayesian parsimony analysis combined ITS (nrDNA)...
Recent studies on Canthium revealed that the genus is polyphyletic. Subsequently, sensu stricto ( s.s. ) was re-delimited to species having paired supra-axillary spines, which led reinstatement of various genera in Vanguerieae such as Keetia, Psydrax and Pyrostria . This raised questions generic affiliations Philippine most its members lacked spines. In an effort revise , endemic spineless subsessilifolium collected ascertain affiliation within tribe using plastid trnL-F region) nuclear (ITS...
Villaria uniflora, a new species from the Philippines is here described and illustrated. It can be easily distinguished other members of genus by its uniflorous inflorescences, narrowly acute bract apex, infundibuliform calyx tube, triangular-ovate lobes, lanceolate stigmatic lobes.
Psydrax puberula, a new species from the Philippines is here described and illustrated. It can easily be distinguished currently recognized Malesian with its puberulent compound umbellate inflorescences 14–25 flowers as well fruit stalk fruit. P. puberula second of in Philippines.
Mt. Mariveles, a part of the Western Volcanic Chain Luzon Island, has two trails, Tarak ridge trail located at Bataan, and Pantingan Peak Bagac, Bataan. is famous place for mountaineering since it difficult climbs near Manila. Conversely, people looking hiking adventure typically do PantinganTarak Traverse which known to mountaineers as ‘PANTARAK’. A preliminary checklist vascular plants was done along but comprehensive study on Rubiaceae in entire mountain region yet be completed....
Pyrostria triflora, a new species of the tribe Vanguerieae Rubiaceae from Philippines is described and illustrated. The unique other representatives genus by its strictly 3-flowered inflorescences geographic distribution.Bangladesh J. Plant Taxon. 22(1): 5558, 2015 (June)
: Objective: One common problem affecting herbal remedies is the incorrect identification of plants due to almost similar morphological characters. A promising technique ensure correct medicine use DNA barcoding where gene markers either from Chloroplast (cpDNA) or Nucleus (nrDNA) are commonly used authenticate plants. In this study, three chloroplast barcodes; matK, rbcL and trnL-F were evaluated 20 selected medicinal Mt. Arayat National Park (MANP), Pampanga, The Philippines. Methods:...
The Mt. Arayat National Park (MANP) is one of the oldest national parks and protected areas in Philippines.However, very few published studies have been carried out despite its speculated high potential biodiversity.Therefore, this paper intends to provide a preliminary checklist vascular plants MANP with emphasis on their conservation status.Several floristic surveys were conducted South North peaks MANP.A total 98 species belonging 92 genera 43 families identified.Of them, Leguminosae was...
Antirhea surigaoensis, a new species of from Surigao del Norte, Philippines is described. It closely resembles philippinensis (Benth.) Rolfe; however, it can be easily distinguished by having triangular stipules, longer petioles, peduncles, bracts, calyx tubes, corolla lobes, anther and style densely sericeous perianth on the outside.
Discospermum philippinensis, a new endemic species from the Philippines, is here described and illustrated. The similar to D. whitfordii because of persistent calyx prominent disk below fruit apex, which it can be distinguished by leaf blades 5.5–15.5 × 3.5–6.5 cm, acute attenuate apex (vs. 4.5–10.0 2.0–4.5, caudate in whitfordii), fruits faintly ribbed, smaller with thin mesocarp non-ribbed, thick mesocarp), 4–6 seeds per locule 5–12).
A checklist of fern species in Mt Mariveles, Bataan was provided two trails the said mountain, Tarak ridge and Pantingan peak from 400 masl to 1000 with information their growth forms, endemicity conservation status. The collected specimens were identified evaluated based on There 28 taxa, 20 genera 14 families ferns observed at Mt. Mariveles Bataan. Among families, Aspleniaceae has most numbered consisting 5 taxa. are taxa ferns, 10 that found while 11 9 recorded Mariveles. More Papaya...
Three new species combinations are made under Villaria for the Philippine endemics Hypobathrum coriaceum, H. multibracteatum and purpureum . Morphological features of these three revealed a closer resemblance with than , as possess unilocular ovary parietal placentation; character that is not found in any genera Octotropideae except Lectotypes neotype selected.
Pyrostria laljii M.C. Naik, Arriola & M. Bheemalingappa (Rubiaceae) from the Andaman and Nicobar Islands, India is described illustrated. It closely resembles P. cochinchinensis subsessilifolia by having subsessile inflorescences a very short peduncle. However, presence of 1 cm long petiole, shorter glabrous pedicel an 8–12-flowered umbellate inflorescence sets apart subsessilifolia. represents first record genus Islands.
Morphological examination of isotypes Canthium elmeri revealed the absence supra-axillary spines, which deviates from current circumscription s. stricto. The presence persistent, basally connate and long-acuminate paired bracts in C. fits perfectly with delimitation Pyrostria. We lectotypify name Merr. propose new combination Pyrostria (Merr.) Arriola, Meve & Alejandro.
Psydrax multiflora , a new species of Vanguerieae collected in the Palawan, Luzon Island, Philippines is herein described and illustrated. Morphological observation showed that P. multilfora approaches three Malesian species, namely amplifolia, nitida puberula . However, can be delineated from these by its caudate leaf apex, 20–30‐flowered umbellate inflorescences broadly triangular corolla lobes.
Discospermum reyesii Arriola, Valdez & Alejandro (Coffeeae, Rubiaceae) is described and illustrated from Mt. Lantoy in the forested regions of Cebu, Philippines. It closely resembles D. whitfordii by having similar leaf blades, apices non-ribbed fruits, but differs it smaller fruits (1.0–1.2 cm vs. 2.0–2.7 cm), seeds 1–1.4 × 1.5–2.5 mm (vs. 5–6.5 5–6.5(7) mm) fewer per locule 4–6 5–12).
Pyrostria arayatensis Suba, Arriola & Alejandro (Rubiaceae), a new species from Mount Arayat National Park, Pampanga, Philippines, is herein described and illustrated. It resembles P. ramosii but differs it by having 20–25 flowers in inflorescences.
Villaria marinduquensis Arriola & Alejandro (Octotropideae, Rubiaceae) is herein described and illustrated as a new species from Marinduque, Luzon, Philippines. The uniflorous inflorescences infundibuliform calyx tube of V. resemble those acutifolia uniflora; however, the features bracts, calyces corolla in differ two afore-mentioned species. distinguished all its congeners by having tubular tube. An identification key to provided.