Volume 13, number 2, published December 2019
| Resolving Taxonomic Confusion between Hoya cumingiana Decne. and Hoya densifolia Turcz. (Apocynaceae) using Leaf Architectural Analysis By Alcona Mae P. Baltazar and Inocencio E. Buot, Jr. |
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| Leaf Architectural Variations among Species and Accessions of Genus Cucumis L.
By Lailani A. Masungsong, Nerissa K. Torreta, Marilyn M. Belarmino Teresita H.Borromeo, Inocencio E. Buot, Jr. |
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| Photoperiod Influenced Flowering and Steviol Glycoside Accumulation of Stevia Under
In Vitro And Ex Vitro Condition By Catherine C. Arradaza, Rocelie R. Zara, Rachel Anne M. Gonzaga |
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| Impact of Ecological Factors on the Distribution of Vanilla siamensis (Orchidaceae: Vanilloideae) in Tropical Forest at Khao Soi Dao Wildlife Sanctuary, Chantaburi, ThailandBy Vinan Vince Chaipanich, David L. Roberts, and Sasitorn Hasin |
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| Phylogeography of Betta and Trichopsis (Perciformes: Osphronemidae) Fighting Fishes in Thailand and Neighboring CountriesBy Parames Laosinchai and Bhinyo Panijpan |
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| Two New Species of the Genus Acinolaemus (Pulmonata: Pupillidae) from Thailand
By Bang-on Changlom, Tanya Chan-ard and Pongrat Dumrongrojwattann |
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| A Checklist of Fern Species in Disturbed Areas of Mount Makiling, Philippines
By Marjorie D. delos Angeles and Inocencio E. Buot, Jr. |
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