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Notes on Liverwort Specimens from the Philippine Cordilleras in the Botanical Herbarium of the UPLB Museum of Natural History (CAHUP)

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Notes on Liverwort Specimens from the Philippine Cordilleras in the Botanical Herbarium of the UPLB Museum of Natural History (CAHUP) Mountain Journal of Science and Interdisciplinary Research PRINT ISSN: 2619-7855 ONLINE ISSN: 2651-7744 MJSIR July-September 2019 • 79 (2) : 7-20 Notes on Liverwort Specimens from the Philippine Cordilleras in the Botanical Herbarium of the UPLB Museum of Natural History (CAHUP) Eugene L. R. Logatoc1*, Annalee S. Hadsall2,4, Pastor L. Malabrigo Jr.3,4, and William Sm. Gruezo2,4 1- Graduate School, University of the Philippines Los Baños, College 4030, Laguna, the Philippines 2-Institute of Biological Sciences, College of Arts and Sciences, University of the Philippines Los Baños, College 4030, Laguna, the Philippines 3-Department of Forest Biological Sciences, College of Forestry and Natural Resources, University of the Philippines Los Baños, College 4030, Laguna, the Philippines 4-Museum of Natural History, University of the Philippines Los Baños, College 4030, Laguna, the Philippines *corresponding author. e-mail: [email protected] Abstract An account of liverwort specimens collected from the Philippine Cordilleras, particularly from the Cordillera Administrative Region (CAR), deposited and accessioned in the Botanical Herbarium of the University of the Philippines Los Baños Museum of Natural History (CAHUP) is provided. A total of 539 accessions from the region were recorded, comprising 23.89% of the overall liverwort and hornwort collection of CAHUP. This represents a total of 76 species distributed in 41 genera and 26 families. The families Lepidoziaceae with 179 accessions, Plagiochilaceae with 100 accessions, and Herbertaceae with 48 accessions make up the majority of the collections from the region. The oldest dated specimen from the CAR deposited in the herbarium was collected by H.H. Bartlett in 1935 and the bulk of accessioned specimens from the region were collected in the 1970s by M. Alvarez with A. Tandang and Saprid from Mt. Data (Mountain Province) and Mt. Pulag (Benguet Province), respectively. The geographic extent of liverwort collection in the CAR, as reflected by the accessioned specimens, is restricted to few localities in the provinces of Benguet, Ifugao, and Mountain Province. Locality information and distribution KEYWORDS records for noteworthy species are reported, with 20 species new to the CAR; new localities are reported for another 18 species. herbarium With the current state of liverwort collection and research in the natural history collections CAR, the processing and accessioning of approximately 15,000 Philippine flora bryophyte specimens from different parts of the country, conducting bryophytes inventories and examination of herbarium specimens in other liverworts herbaria, and carrying out extensive and systematic collection work in areas of high conservation value are expected to contribute more information on the ecology, richness and diversity, and distribution of liverworts in the region. 8 MOUNTAIN JOURNAL OF SCIENCE AND INTERDISCIPLINARY RESEARCH • JULY-SEPTEMBER 2019 • 79 (2) Introduction Methodology Established in 1976, the University of the A database of accessions of liverwort Philippines Los Baños Museum of Natural History specimens deposited in CAHUP was created using (UPLB MNH) serves not only as a repository of Microsoft Excel® (available upon request). Logbooks biological specimens but also as a center of research containing specimen accessions were used as in systematic biology, an information hub, and reference and herbarium specimens were inventoried an institution for learning (Gapud & Tan, 1982). and examined. Entries for each accession include At present, the UPLB MNH caters approximately accession number, family, genus, species epithet, 200,000 specimens of flora and fauna, of which subspecies or variety, collector and collection a sizable number are from the Philippines. The number, date of collection, collection locality, Botanical Herbarium (CAHUP following Thiers, person who identified the specimen and date of 2015), one of the eight components of the UPLB determination, and annotations or remarks. A MNH, serves as the repository of about 12,000 survey of accessions of liverwort specimens plant species represented by around 70,000 collected from the Cordillera Administrative specimens; among these, about 3,600 species are Region was carried out to determine the taxonomic bryophytes. composition of the collections and the extent of collection across this phytogeographically unique Studies on Philippine liverworts may be dated region. In light of developments in liverwort as early as 1833 with the description of taxonomy and systematics, nomenclature and Jungermannia floccosa by Profs. J.G.C. Lehmann classification was updated following Söderström and J.B.W. Lindenberg based on a material et al. (2016) and according to the online checklist obtained from the leaf of a tree specimen collected The Plant List (2013). Published information from Sorsogon Province during the Malaspina on the geographical distribution of a number Expedition in 1792-1793 (Lehmann, 1883; Tan of noteworthy species were then reviewed and & Engel, 1986). From the checklist of Philippine synthesized. Hepaticae, Tan and Engel (1986) accounted a total of 504 species of liverworts in 94 genera and 32 families. It is evident, however, that the checklist Results and Discussion needs to be updated in light of recent developments in liverwort taxonomy and systematics (e.g. Bakalin, 2013; Crandall-Stotler et al., 2009; Söderström et Account of Accessioned Specimens al., 2016; Sukkharak & Gradstein, 2014; Zhu et al., from the Philippine Cordilleras 2018). Additionally, Tan and Engel (1986) noted that past liverwort collections in the country The liverwort and hornwort collection of focused on relatively few mountains and about CAHUP consists of a total of 2,256 accessions– 10% of the species reported in the country are of which 539 (23.89%) are liverwort specimens without citation of a collection and locality. from the CAR. This represents a total of 76 species distributed in 41 genera and 26 families In an effort to document the liverwort flora (Table 1). The majority of the collections from the of the Philippines, an extensive review of region are composed of Lepidoziaceae with 179 pertinent literature as well as the examination of accessions, Plagiochilaceae with 100 accessions, collections in different herbaria are considered of and Herbertaceae with 48 accessions. Amongst paramount importance. In this paper, we present these, Lepidoziaceae is the most represented family an account of liverwort specimens from the with 16 species, followed by Lejeuneaceae Philippine Cordilleras, particularly within the and Plagiochilaceae each with 12 species, and geo-political unit known as the Cordillera Frullaniaceae with 7 species. The families with the Administrative Region in Luzon Island, deposited most number of genera are Lejeuneaceae with 10 and accessioned in CAHUP as well as a number genera and Adelanthaceae with three (3) genera. of new records for species with poorly known distributions within the Philippines. The oldest dated material at CAHUP collected in the CAR is a specimen of Frullania serrata Notes on Liverwort Specimens ... E.L.R. Logatoc et al. 9 Table 1 Liverwort specimens from the Cordillera Administrative Region deposited and accessioned in the Botanical Herbarium of the UPLB Museum of Natural History. Families Number of Accessions Genera Species 1. Adelanthaceae 19 3 3 2. Anastrophyllaceae 21 1 1 3. Aneuraceae 1 1 1 4. Aytoniaceae 1 1 1 5. Blepharostomataceae 2 1 1 6. Cephaloziaceae 1 1 1 7. Cephaloziellaceae 8 1 1 8. Frullaniaceae 15 1 7 9. Gymnomitriaceae 1 1 1 10. Herbertaceae 48 2 4 11. Jackiellaceae 8 1 1 12. Jungermanniaceae 13 2 2 13. Lejeuneaceae 43 10 12 14. Lepicoleaceae 5 1 1 15. Lophocoleaceae 1 1 1 16. Lepidoziaceae 179 2 16 17. Marchantiaceae 6 1 1 18. Mastigophoraceae 44 1 1 19. Metzgeriaceae 2 1 1 20. Plagiochilaceae 100 2 12 21. Pleuroziaceae (accessioned in part) 1 1 22. Porellaceae 1 1 1 23. Scapaniaceae 6 1 1 24. Schistochilaceae 7 1 2 25. Solenostomataceae 5 1 1 26. Trichocoleaceae 2 1 1 Total 539 41 76 Gottsche (Frullaniaceae) collected by H.H. Bartlett other collections from this period are by B.C. Tan on March 23, 1935 in Mt. Santo Tomas in (1974-1975, four accessions), L. Co (1975, five the present-day Benguet Province (Figure 1). This accessions), B. Hernaez (1976, two accessions), S.R. material represents the only pre-war liverwort Peñafiel (1977, one accession), B. Yabut (1978, three specimen from the CAR in the herbarium. In the accessions), and F. Rodriguez (1978, one accession; post-war scenario, majority of the liverwort refer to Figures 2 and 3). However, it should be specimens from the region were collected in the noted that approximately 15,000 packets of 1970s by M. Alvarez with Saprid or A. Tandang bryophyte specimens are yet to be processed and from Mt. Pulag in Benguet Province (Alvarez & accessioned; hence, the superficial decrease on Saprid collections of 1978, 144 accessions) and the number of specimens added to the herbarium Mt. Data in Mountain Province (Alvarez & after the 1970s (Figure 2). Tandang collections of 1979, 329 accessions); 10 MOUNTAIN JOURNAL OF SCIENCE AND INTERDISCIPLINARY RESEARCH • JULY-SEPTEMBER 2019 • 79 (2) concentrated on relatively few mountains (see Tan & Engel, 1986). In spite of this, the examination of these collections revealed a number of new records for species with poorly known distributions within the country. Undoubtedly, additional collections from other poorly known mountains and localities in the region
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