Indonesia is a megadiverse country. Butterflies become one of the Indonesian diversities. Indonesia has the second-highest butterfly species in the world with more than 2000 species. Flower plants are used by butterflies as hostplants and foodplant. The aims of this research were to know butterflies’ diversity and food plants in Mount Muria at Kudus City,  Central Java. The research used the quadran sampling transect method with three stations (along 2 km). The research was conducted in March and June 2020. The tools used were insect net, termohigrometer, lux meter, digital camera, roll meter, GPS, ja,r and identification book. Data on butterflies diversity were analyzed by Shannon-Wiener (H’), Evenness index (E), Relative Abundance (Pi), Simpson Dominance Index (D), Density (KR) Frequency (FR), and Important Value Index (IVI).  Results of the research showed that at least 40 species of six family butterflies found at Mt. Muria. Butterflies at Mt. Muria area has a medium diversity, medium evenness, and low dominance. Leptosia nina has the highest relative abundance, frequency, density and IVI (Important Value Index). Butterflies were found frequently feeding on flowers as hostplants and foodplants. 31 species of flower plants were found at Mt. Muria. The most used plant as hostplants and foodplants by butterfly is Lantana camara, and Chromolaena odorata from Verbenaceae and Asteraceae.

<p><em>Baturraden Botanical Garden (KRB) is a conservation area both ex-situ and in-situ of various plants in the Slamet Mountain area. KRB plays a role in saving various types of plants, one of which is the type of bamboo in the area is rarely updated data. This study aims to inventory which is used in evaluating data on the number and types of bamboo that are in the KRB collection. The study uses descriptive qualitative methods which include exploration, morphological observation, and measurement of environmental factors. Based on field data collection, 40 bamboo specimens were obtained in 17 species, of which there were 7 specimens from 5 species that have not been identified while 33 other specimens belong to 12 different species and 8 genera. The eight clans are Bambusa, Cephalostachyu, Chimonobambus, Dinochloa, Gigantochloa, Melocanna, Schizostachyum, and Semiarundinaria. Schizostachyum caudatum Backer ex K. Hene, Melocanna baccifera (Roxb.) Kurz, Bambusa multiplex (Lour.) Raeusch. ex Schult. is the most commonly found bamboo. Morphological observations included roots, reeds, leaves and midribs. Environmental factors of the Baturraden Botanical Gardens in VAK III.B.I and VAK III.B.II meet the requirements for the growth and propagation of bamboo collections.</em></p>