Vaccinium sulawesiense Mustaqim & P.W.Fritsch, a newly discovered endemic to Sulawesi, Indonesia, is described. This species is similar to V. simulans Sleumer but differs in having an acuminate leaf apex, larger floral organs, and an absence of trichomes in the upper half of the inner surface of corolla and disk. This species is known from the two specimens, one from a mid-montane rain forest in Mamasa Regency, Sulawesi Barat Province and the another from Poso Regency, Sulawesi Tengah Province. An updated list of the 17 known Vaccinium species in Sulawesi is also provided.
One new species of Hoya from Indonesia, Hoya batutikarensis, is described and illustrated. It is similar to H. camphorifolia but it has unusual corona lobes, each lobe has a spreading process at base and an apical triangular process, while the corona of H. camphorifolia has simple navicular lobes. Hoya ischnopus, a species so far only known to occur in New Guinea, is newly recorded in Sulawesi, considerably extending its distribution area.
A research about species diversity of Hoya (Apocynaceae) in Sidole Mountain, Ampibabo District, Parigi Moutong Regency of Central Sulawesi has been conducted from December 2018 to March 2019. The research was conducted by using botanical exploration method that aim to record and describe species of Hoya based on morphological characters The results showed that there were 2 species of Hoya namely H. camphorifolia Warb and H. imbricata Decne.
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