Calcareous soil and dry climate are characteristic of Madura Island, located on the east coast of Java, Indonesia. The group of flowering plants that adapted to these conditions is the genus Cleome L. (Cleomaceae). In 1963, Backer and Bakhuizen van den Brink Jr. only listed three species of Cleome from Madura, i.e., C. aspera J.König ex DC., C. gynandra L., and C. viscosa L. Since then, the updated data on the genus Cleome of Madura is not provided yet. Therefore, this study aimed to provide updated information on the genus in Madura island. The botanical exploration was conducted at Bangkalan, Sampang, Pamekasan, and Sumenep in December 2019 to January 2020. The two additional species, namely C. chelidonii L.f. and C. rutidosperma DC., were reported for the first time in Madura. Both species were considered as the newly distributional record for the island. Cleome chelidonii was found in Gapura Tengah (Sumenep Regency), and C. rutidosperma was collected from Kamal (Bangkalan Regency). The botanical information on both species is presented, including the updated key to the Cleome of Madura Island. This study provides updated information on genus Cleome in Madura and reporting the existence of Cleome chelidonii and Clome rutidosperma from the island. The presence of both species was considered as a newly distributional record.

Tarenna is a genus of relatives of Ixora which is found in forests. Tarenna is different from Ixora which is known as an ornamental plant. The purpose of this study was to find the genus Tarenna in Madura natural habitat to preserved or conserved before this genus became extinct. Observations were made on morphological characters. The morphological characteristics observed included: stature, stems, leaves, inflorescences, flowers, fruits, and seeds. Ixora has a corolla of various flowers while Tarenna only has a white corolla but smells good. Recent exploration and collection of Tarenna in Madura Island indicated that two species are a new record for Java and Madura Island, namely T. costata and T. fragrans. Existence of T. costata in this area not only as a new record for Madura Island, but also as a new record for Java. Tarenna fragrans was firstly reported in Madura Island as a new distributional record for this area. An updated of identification key, several descriptions, and documentations, as well as a distributional map are provided.

Madura island is known as a mixed deciduous forest area with dry seasons and limestone soil. The island has unique plant species compared to the mainland Java. However, most of the mangrove forest areas have been converted into ponds and housing. One of the remaining mangrove swamps is located at Telang Asri village, Kamal Subdistrict, Bangkalan Regency. Several species of mangroves have been reported here, along with other groups of plants from the Phyllanthaceae family, found numerously at the time of observation. In 1963, CA Backer and RC Bakhuizen van den Brink Jr. have already listed 16 species of Phyllanthaceae from Madura Island. Since then, the updated information on the Phyllanthaceae of Madura has not been available. Therefore, this study aimed to collect the members of Phyllanthaceae family in the mangrove swamp areas of Telang Asri village. The field study was carried out using the exploratory method, while specimen preparation was conducted in Herbarium Bandungense (FIPIA). In this study, seven species were collected from Telang Asri, namely Glochidion littorale Blume, G. zeylanicum (Gaertn.) A. Juss., Phyllanthus amarus Schumach. and Thonn., P. debilis Klein ex Willd., P. reticulatus Poir., P. urinaria L., and P. virgatus G. Forst.