An endemic plant species of East Java, Smilax nageliana A.DC (Smilacaceae)

Smilax nageliana A.DC (Smilacaceae) is an endemic plant species confined to Ranu Darungan and Mt. Kawi in East Java, Indonesia. The species was last collected in 1980 and is not known to be present at ex situ collections. In the present study, we conducted a field survey in the natural habitats of the species to provide updated information on morphological and ecological characteristics and to evaluate the presence of S. nageliana species, including habitat preferences. Using a focused survey method, 307 mature individuals of S. nageliana were recorded growing in Ranu Darungan and Mt. Kawi. The morphological character especially in color of the fruit, that found in dark green, while the previous time it was dark purple to black. The ecological character of the S. nageliana habitat was different from the previous time, where today was found at an altitude of 670 m above sea level (masl). In Ranu Darungan, the population was found at an elevation range of 670-1200 m, while in Mt. Kawi, the population grows from 1100-1400 masl This plant grows in places with high relative humidity ranges from 52%-90% and moderate temperatures ranging from 21°C-27.7°C.