Information on the diversity of liverworts of genus Bazzania in Sumatra, especially North Sumatra, is still limited in research. The aim of this study was to invent and describe the morphological characters and to obtain the diversity of Bazzania on Mount Sibuatan, Karo regency, North Sumatera, Indonesia. Specimens were collected during explorative survey along the climbing path and potential habitats such as riverbanks and open areas from July 2017 until January 2018. The results showed that there were 15 documented species of Bazzania with following species: Bazzania calcarata, B. loricata, B. caudisapexula, B. densa, B. erosa, B. fallax, B. filiformis, B. francara, B. japonica, B. longicaulis, B. paradoxa, B. pectinata, B. praerupta, B. spiralis, B. subtilis, and B. tridens. The genus, Bazzania is commonly found living in soil substrates, tree trunks and witherred woods.

Oshibana is known as a flower processing technique so that it can produce crafts with a drying method without changing the original color of the flowers. Oshibana technique aims to produce handmade products with raw materials that come from nature, are environmentally friendly and have high selling value. Partners in this community service activity are the youth of Padepokan Igra, Kolam Village, Percut Sei Tuan District, North Sumatra. This activity aims to provide information to partners about the potential of home garden plants to be used as creative products with artistic and economic value and to introduce oshibana techniques. The implementation of the activity is carried out using 2 methods, namely the presentation of material and the delivery of information related to the potential of homegarden plants as raw material for industrial products and the direct practice of making oshibana. Through this community service activity, it is hoped that the youth at the Iqra hermitage can increase their insight and knowledge about the use of waste yard plants as raw material for creative artistic and economic products and can create jobs while supporting eco-green programs and save our earth.

Lejeuneaceae (Subfamily: Lejeuneoideae) of  Mount Sibuatan, North Sumatra, Indonesia. Information on the local diversity of the subfamily Lejeuneoideae in North Sumatra, Indonesia, is still less reported, especially in Mount Sibuatan. This study aimed to collect, explore and describe the morphological characters and obtain the diversity of the subfamily Lejeuneoideae in the Mount Sibuatan forest area, North Sumatra. Nineteen species of this subfamily are reported, comprising eight genera: Cheilolejeunea, Cololejeunea, Colura, Diplasiolejeunea, Drepanolejeunea, Lejeunea, Metalejeunea, and Pycnolejeunea.. One species, namely Drepanolejeunea pentadactyla, is reported as new record for Sumatra. Identification key to species and pictures of species newly recorded is provided.

Bryophyte is a non-vascular plant, consisting of three classes: mosses, hornworts, and liverworts. The body forms have a thallus, and some have a leaf-like organ. The class division of the Bryophyte division is base on anatomical and morphological traits, such as meristem tissues, stomata, and vascular tissues. M Bryophyte has no vascular tissue, but it has a capillary that has functions like xylem and commonly refers to as hydroid. Mosses and hornworts have stomata on the sporophyte part, while in the liverworts, stomata are not found. Hornworts have a basal meristem that has an unpredictable cleavage. Meristem on the mosses only divides up the formation of sporangial. In the liverworts, the apical meristem does not see. Members of the hornworts consider the most advanced because the meristematic phase is more prolonged, so that it is closer to the characteristics of Tracheophyta group.