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Species Richness and Conservation Status
of Ferns and Lycophytes in Mt. Hamiguitan
Range Wildlife Santuary, Davao Oriental, Philippines

Victor B. Amoroso1, Fulgent P. Coritico1, and Peter W. Fritsch2

1Center for Biodiversity Research and Extension in Mindanao (CEBREM),
Central Mindanao University, Musuan, Bukidnon, Philippines
1Botanical Research Institute of Texas, 1700 University Drive,
Fort Worth, Texas 76107-3400, USA

ABSTRACT
An updated species list and conservation assessment of ferns and lycophytes in Mt. Hamiguitan Range Wildlife Sanctuary, Davao Oriental were provided on the basis of recent field survey and examination of herbarium specimens. One hundred and fifty-two species, belonging to 27 families and 72 genera, were recorded. The species figure is about 13% of the total number of fern and lycophyte species in the Philippines and nearly 20% of the total number on Mindanao Island. Twelve species are broadly distributed Philippine endemics and three more are found only on Mindanao. Nine species are new records for Mindanao. A site-endemic species, Lindsaea hamiguitanensis, was also documented. Of the 18 threatened species recorded, one is critically endangered, seven are endangered, and 10 are vulnerable.

INTRODUCTION
Traditionally, pteridophytes include the so-called ferns and fern allies because of their shared life cycle as spore-producing plants. Recently, molecular data show that pteridophytes are paraphyletic. They are now recognized as the lycophytes and ferns (i.e. monilophytes), the latter of which includes horsetails, whisk ferns, and all eusporangiate and leptosporangiate ferns (Smith et al. 2006).
The diversity of Philippines vascular plants includes an estimated 1,100 species of ferns and lycophytes distributed among 154 genera and 34 families, according to recent classifications (e.g. Smith et al. 2006). This estimate continues to increase because of new species discoveries and new records in the Philippines (Amoroso et al. 2009; Barcelona et al. 2013). . . . . . read more

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