DOI: 10.5061/dryad.8sf7m0d04
title: Aeschynanthus pentatrichomatus (Gesneriaceae), a new species of lipstick vine from the Banao Protected Landscape of Luzon Island in the Philippines

description: Aeschynanthus pentatrichomatus sp. nov. (Gesneriaceae), a new species from
 the tropical lower montane rain forests of the Banao Protected Landscape
 in Luzon Island in the Philippines is described and illustrated.
 Morphologically, it is most similar to A. batesii in having glabrous
 vegetative parts, polysepalous calyx, and distinctly mottled internal
 corolla throat and lobes. However, it differs from this species in its
 smaller lamina, longer peduncle, smaller calyx lobes, whitish pink
 external corolla tube, and presence of five tufts of trichomes near the
 basal portion of the internal surface of the corolla tube. Aeschynanthus
 pentatrichomatus differs from A. philippinensis by its externally whitish
 pink, internally white corolla tube with mottled maroon markings
 throughout the limb and lobes, smaller calyx lobes, and internal surface
 of corolla tube with five tufts of trichomes basally. Aeschynanthus
 pentatrichomatus sp. nov. is the 33rd species of lipstick vines to be
 described in the Philippines. The new species is provisionally assessed as
 Critically Endangered (CR) following the IUCN criteria.
description: An expedition in the municipality of Balbalan was conducted from
 13–19 March 2020. During the expedition, an Aeschynanthus species was
 encountered that possessed distinct whitish pink corolla tube and mottled
 maroon markings on its corolla lobes. The plant was documented and
 collected. Ecological notes were also recorded. Spirit collection of the
 fragile parts followed the RBGE (2022) technique, and further dissections
 were carried out under stereomicroscopy (Olympus SZ51). 
 <br>Relevant taxonomic treatments and protologues of the
 species of Aeschynanthus were reviewed (Clarke 1883, Elmer 1908, Elmer
 1910, Merrill 1915, Schlechter 1923, Merrill 1923, Burtt and Woods 1975,
 Mendum and Madulid 1995, Mendum 1999, Mendum 2001, Mendum et al. 2001,
 Weber 2004, Li and Wang 2005, Weber et al. 2013, Middleton 2007, Middleton
 2009, Middleton 2016, Olimpos and Mansibang 2021, and Pelser et al. 2021),
 supported by examination of Aeschynanthus specimens deposited at A, BM,
 BRIT, E, GH, HBG, K, L, LY, MO, NY, US, VT, W, and Z; and PNH and PUH
 visited (see appendix). After thorough literature review and morphological
 comparison, it was clear that the species was different from all
 previously described Aeschynanthus species known in the Philippines and
 morphologically closest to the Sulawesi species A. batesii Mendum (2004:
 324) (see diagnosis). The holotype was deposited at LBC; isotype was
 deposited in PUH.  The conservation status of the species was assessed
 following the International Union for Conservation of Nature (IUCN) Red
 List Categories and Criteria (IUCN Standards and Petitions Committee
 2022).
description: # Aeschynanthus pentatrichomatus (Gesneriaceae), a new species of lipstick
 vine from the Banao Protected Landscape of Luzon Island in the Philippines
 [https://doi.org/10.5061/dryad.8sf7m0d04](https://doi.org/10.5061/dryad.8sf7m0d04) ## Description of the data and file structure Dataset_results_figure1_colorplate Dataset_results_figure1_illustration Dataset_results_figure3_A_pentatrichomatus_vs_A_batesii Dataset_results_figure4_map File descriptions Dataset_data_processed_A_pentatrichomatus_photographic_guide - processed file that exemplifies the morphology and the parts of the new taxa. This serves as a guide to the terminologies we exactly used on the species description. Dataset_data_raw_A_pentatrichomatus_scanned_type - raw scanned type of the new species. Flower not included. Dataset_results_figure1_colorplate - colorplate which summarizes the important characters diagnostic to the new species. The plate includes both in-vivo and in spirit specimens taken from the type material. Dataset_results_figure1_illustration - line drawing of the new species Dataset_results_figure3_A_pentatrichomatus_vs_A_batesii - photographic comparison of A. pentatrichomatus and A. batesii. Dataset_results_figure4_map - map which indicate the type locality of the new species in Kalinga, Luzon, Philippines. ### Files and variables N/A ## Access information Other publicly accessible locations of the data: * The herbarium types were deposited in LBC (holotype) and PUH (isotype) Data was derived from the following sources: * N/A