Notes on theMedinilla(Melastomataceae) of Palawan, Philippines, Including Two New Species:M. simplicymosaandM. ultramaficola

Quakenbush, J. Peter; Malabrigo, Pastor L.; Umali, Arthur Glenn A.; Tobias, Adriane B.; Magarce-Camangeg, Lea; Ang, Yu Pin; Bustamante, Rene Alfred Anton

doi:10.1600/036364420x16033962925376

Cited by 4 publications

(3 citation statements)

References 16 publications

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“…However, other members of the M. suberosa-alliance tested in our study (M. amplectens, M. erythrophylla, M. multialata, and M. succulenta) were resolved in the M. rubicunda and M. erythrophylla alliances. Anther details for M. palawanensis are insufficiently known, but a more recently described species and presumed close relative, M. ultramaficola, has anthers somewhat consistent with those of the M. erpetina-alliance, having a long dorsal appendage and essentially lacking ventral appendages (Quakenbush & al., 2020). More sampling from Palawan is needed to better understand this group.…”

Section: Medinilla Erpetina-alliancementioning

confidence: 99%

Systematics of the fleshy-fruited Sonerileae (Melastomataceae)

Quakenbush,

Chen,

Penneys

et al. 2024

Preprint

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With approximately 1080 species, Sonerileae is the second largest tribe in the Melastomataceae. Approximately 40% of Sonerileae species belong to fleshy-fruited genera (Catanthera, Heteroblemma, Kendrickia, Medinilla, Pachycentria, and Plethiandra). Relatively few species, especially of the fleshy-fruited taxa, have been sampled for phylogenetic study. Consequently, there is huge uncertainty resulting in many unanswered questions about their evolutionary history, including the monophyly of the largest genus, Medinilla. In this study, the phylogeny of the fleshy-fruited Sonerileae was reconstructed using 385 nuclear and 81 plastid protein-coding loci recovered from target capture. Our study revealed that the fleshy fruited Sonerileae are polyphyletic and belong to three lineages. Kendrickia is sister to an Afrotropical endemic clade. Heteroblemma and Catanthera belong to a second clade and are most closely related to some Phyllagathis and Driessenia species. Medinilla forms a third clade, and includes Pachycentria and Plethiandra. Within Medinilla, fifteen clades are identified and characterized. To make Medinilla monophyletic, the genus is redefined to include Pachycentria and Plethiandra. Major lineages identified within Medinilla lay the groundwork for an infrageneric classification system. Areas of the phylogenetic tree with high conflict or weak sampling are identified to aid further studies in the tribe.

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Section: Medinilla Erpetina-alliancementioning

confidence: 99%

Systematics of the fleshy-fruited Sonerileae (Melastomataceae)

Quakenbush,

Chen,

Penneys

et al. 2024

Preprint

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“…The cataloguing of new plant taxa from the VAMR has accelerated in recent years, with many taxa from a wide variety of families published (e.g. Robinson et al, 2009Robinson et al, , 2016Quakenbush et al, 2020;Tamayo et al, 2021), including several vireya rhododendrons (Argent, 2004). The VAMR is the largest contiguous exposed area of the Mount Beaufort Ultramafics geological terrane, a series of outcrops of Eocene origin (Okubo, 1989) that includes several mountains of > 1000 m elevation, including Brow Shoulder, Mount Shumkat, Sultan Peak, and the eponymous Mount Victoria and Anepahan.…”

Section: Species Descriptionmentioning

confidence: 99%

Rhododendron Astrophorum (Ericaceae, Rhododendron Sect. Schistanthe), a New Micro-Endemic Species From Central Palawan, Philippines

Tamayo,

Marcos-Langbao,

Bustamante

et al. 2023

Edinburgh J. Bot.

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A new micro-endemic species of Rhododendron is described and illustrated from botanical expeditions to the Victoria-Anepahan Mountain Range on the island of Palawan. It closely resembles Rhododendron wilkiei but differs in having leaves with laminae that are narrowly elliptic-oblanceolate, have adaxially indistinct venation, and are arranged in 4–8 active and mostly terminal pseudowhorls along the length of the stem; bracts without scales on the margin; yellow flowers with a red corolla tube interior that is densely hairy towards the base; and hairy anther filament bases. Morphological and geographical data place the species in Rhododendron sect. Schistanthe. The new species, together with a first record of Rhododendron vidalii on Palawan as part of this research, represent the tenth and eleventh members of this genus recorded from the island. A revised key to the Palawan species of Rhododendron is provided.

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“…In particular, the extensive areas of ultramafic substrates have resulted in the evolution of many endemic plant species in Palawan (e.g. Robinson et al 2009 , 2016 ; Malabrigo 2020 ; Quakenbush et al 2020 ; Tandang et al 2020 ) and it is to be expected that more species await discovery in these ultramafic regions as they are further explored and studied.…”

Section: Introductionmentioning

confidence: 99%

Vaccinium exiguum (Ericaceae, Vaccinieae), a new species from the ultramafic summit of Mt. Victoria, Palawan Island, Philippines

Tamayo¹,

Bustamante²,

Fritsch³

2021

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Vaccinium exiguum from the ultramafic summit of Mt. Victoria, Palawan Island, Philippines is here described as a new species of Ericaceae. It closely resembles V. hamiguitanense but is distinct by having much shorter petioles and leaves, longer and glabrous calyx lobes with serrate lobe margins, a larger corolla with deeper sulcations, and longer stamens with spurs oriented laterally. Vaccinium exiguum represents the third Vaccinium species found on the Island of Palawan and 36th in the Philippines.

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Notes on theMedinilla(Melastomataceae) of Palawan, Philippines, Including Two New Species:M. simplicymosaandM. ultramaficola

Cited by 4 publications

References 16 publications

Systematics of the fleshy-fruited Sonerileae (Melastomataceae)

Systematics of the fleshy-fruited Sonerileae (Melastomataceae)

Rhododendron Astrophorum (Ericaceae, Rhododendron Sect. Schistanthe), a New Micro-Endemic Species From Central Palawan, Philippines

Vaccinium exiguum (Ericaceae, Vaccinieae), a new species from the ultramafic summit of Mt. Victoria, Palawan Island, Philippines

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