Open AccessHedyotis hamiguitanensis (Rubiaceae: Spermacoceae), a new species from Mt. Hamiguitan, Davao Oriental, Philippines and its systematic position in Hedyotis
Author(s) -
Propa Joy R. Santor,
Duane Dominic B. Santiago,
Conrado Joshua V. Mataga,
Elyjha S. Gabriel,
Grecebio Jonathan D. Alejandro
Publication year - 2021
Publication title -
webbia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.36
H-Index - 20
eISSN - 2169-4060
pISSN - 0083-7792
DOI - 10.36253/jopt-10651
Subject(s) - rubiaceae , phylogenetic tree , biology , botany , tribe , inflorescence , genetics , sociology , gene , anthropology
Hedyotis hamiguitanensis, from Mt. Hamiguitan, Davao Oriental, Philippines, is described, illustrated, and compared with two similar species, H. whiteheadii and H. schlechteri. This species is distinguished from congeneric Philippine species by its 5–12 cm long, compound, umbellate inflorescences, pendulous flowers, lanceolate to oblanceolate, thick, scabrid leaf blades with revolute margins. Its phylogenetic systematic position within the tribe Spermococeae is determined with a phylogenetic analysis using chloroplast (rps16, petD) and nuclear ribosomal (ITS, ETS) nucleotide sequence data.