Euphorbia L. terdiri dari 2100 jenis dan tersebar secara kosmopolitan. Kawasan Malesiadiketahui memiliki sebanyak 48 jenis dan 19 jenis di antaranya terdapat di Pulau Jawa.Informasi mengenai keanekaragaman jenis Euphorbia di Jawa terangkum dalam Flora of Javajilid pertama yang ditulis oleh Backer dan Bakhuizen van den Brink. Hingga saat ini bukutersebut masih dijadikan acuan untuk mempelajari Flora Jawa. Meskipun demikian, informasi didalamnya belum lengkap. Oleh sebab itu, penelitian ini bertujuan untuk mengungkap adanyapenambahan informasi marga Euphorbia di Jawa. Penelitian dilakukan menggunakan metodejelajah pada beberapa lokasi pengamatan di Bogor. Pengamatan lapangan menunjukkan adanya2 jenis Euphorbia yang belum termasuk dalam buku Flora of Java, yaitu Euphorbia gramineaJacq. dan E. hyssopifolia L. Kedua jenis tersebut merupakan tumbuhan asing yang tumbuhmenggulma. Keberadaan E. graminea dan E. hyssopifolia di Jawa baru dilaporkan untukpertama kalinya. Penemuan ini memberikan informasi rekaman baru untuk marga Euphorbia diJawa, sehingga menambah informasi pada Flora of Java.

Phyllanthus myrtifolius (Moon ex Wight) Müll.Arg. and Phyllanthus tenellus Roxb. (Phyllanthaceae) in Java. Floribunda 6(5): 188–194. — Phyllanthus L. is the largest genus in the Phyllanthaceae and consists of 1302 species that are widely distributed in tropical and subtropical regions. There were 20 discovered species of Phyllanthus recorded in the Flora of Java. However, additional species of Phyllanthus in Java can still be discovered in the future. Therefore, this research was aimed to report any additional information on Phyllanthus of Java. Field exploration was conducted in Bandung, Bogor, Jakarta, Sumedang, and Situbondo. Field observation resulted in the findings of two Phyllanthus additional species within the Flora of Java, namely P. myrtifolius (Moon ex Wight) Müll.Arg. and P. tenellus Roxb. P. myrtifolius was widely cultivated as an exotic ornamental plant, while P. tenellus is a newly recorded alien species to Java. The discovery of these species would increase the number of Phyllanthus species in Java.

Desmanthus virgatus (L.) Willd. is an alien plant from Tropical America and reported present in Dutch East Indies in 1855. Nonetheless, the existence of its wild population is yet to be known, which caused by lack of record in Flora of Java vol. I. Hence the research conducted to report the existence of Desmanthus virgatus in Java. The research also conducted as a part of Alien Flora of Java compilation project. Field observation conducted in West Java (Bekasi, Bogor, Sumedang) and Central Java (Batang) by using the explorative method. Observation results showed the existence of Desmanthus virgatus wild population in Bekasi, Sumedang, and Batang. Therefore, the species can be stated as a new record of alien species for Flora of Java. Desmanthus virgatus presumably already escaped from cultivation and able to form its wild population in the nature.

Ficus is the largest genus in the Moraceae family, with the syconium inflorescence as its characteristic. This genus has a wide distribution worldwide, and about 367 species were found in the Malesia region. There are 74 species have been recorded on Java, and seven species are known as introduced plants. Based on our recent observations in West Java, Central Java, Yogyakarta, and East Java, three newly recorded Ficus species were found, namely F. auriculata Lour., F. maclellandii King, and F. natalensis subsp. leprieurii (Miq.) C.C. Berg. The species were introduced to Java as an ornamental plant. Descriptions, photographs, and a brief discussion of the three newly recorded species are presented in this manuscript.

AbstrakInformasi mengenai suku Acanthaceae di Jawa telah dianggap selesai ketika buku Flora of Java diterbitkan. Berdasarkan buku tersebut, marga Ruellia di Jawa hanya terdiri dari lima jenis, yaitu R. brevifolia, R. costata, R. elegans, R. Repens, dan R. tuberosa. Sebagian besar dari anggota Ruellia merupakan jenis asing yang ternaturalisasi, sehingga Ruellia eksotik lainnya yang belum terekam kemungkinan masih ada. Penelitian ini dilakukan untuk menyediakan informasi terkini marga Ruellia di Pulau Jawa dan akan menjadi bagian dari penulisan Alien Flora of Java. Penelitian dilakukan di Jawa Barat (Bandung, Bogor, Depok, Cianjur, Sukabumi, Sumedang, dan Tasikmalaya), Jawa Tengah (Tegal), Yogyakarta, dan Jawa Timur (Malang) pada bulan September hingga November 2020. Pengamatan spesimen Ruellia dilakukan di Herbarium Bogoriense. Penelitian ini berhasil mengungkap satu jenis tambahan spesies dari marga Ruellia, yaitu R. simplex C.Wright. Jenis tersebut dibudidayakan sebagai tanaman hias, namun populasi meliarnya telah ditemukan di Cimenyan (Kabupaten Bandung), Rancaekek (Kabupaten Bandung), Pasir Mulya (Kota Bogor), dan Leuwiliang (Kabupaten Bogor). Jenis ini diduga telah ternaturalisasi dan memiliki kemungkinan untuk tumbuh mendominasi hingga mengancam flora lokal. Secara morfologi, R. simplex dicirikan oleh perawakan yang tegak, helaian daun melanset hingga memita, dan bunga yang berwarna ungu, jambon pucat, atau putih. Kunci determinasi untuk marga Ruellia di Jawa, deskripsi jenis, foto, dan diskusi singkat disajikan dalam makalah ini.Abstract Based on the Flora of Java, the genus Ruellia in the island only consists of five species, namely R. brevifolia, R. costata, R. elegans, R. repens and R. tuberosa. Most of the species are naturalized alien flora. Thus, other exotic Ruellia that have not been recorded may still exist. Our study was conducted to provide updated information on the genus Ruellia in Java and be part of the Alien Flora of Java writing. Field study was conducted in West Java (Bandung, Bogor, Depok, Cianjur, Sukabumi, Sumedang, and Tasikmalaya), Central Java (Tegal), Jogjakarta, and East Java (Malang) from September to November 2020. Further specimen examinations were carried out in Herbarium Bogoriense and Herbarium Bandungense. This research revealed a newly recorded alien species found in Java, namely R. simplex C. Wright. The species is commonly cultivated as an ornamental plant, and it also has been naturalized in the island. Its wild populations were found in Cimenyan (Bandung Regency), Rancaekek (Bandung Regency), Pasir Mulya (Bogor City), and Leuwiliang (Bogor Regency). Ruellia simplex is characterized by its erect habit, lanceolate to linear leaves, and corolla in purple, pale pink, or white. The updated key to the Ruellia of Java, species description, photographs, and a brief discussion is presented in this paper.