Studi Taksonomi Nepenthes di Sumatera Utara

Abstract

Taxonomic study of Nepenthes in North Sumatera has been studied from February until August 2011 using survey method and anatomical variation was studied using simple scraping technique method There are 32 species of Nepenthes have recorded at ten (10) Sub-Provinces in North Sumatera that can be differentiated based an morphological variation (habit, bar, leaf, pitcher, inflorescence) and anatomical variation (stomata). Stomata anomocytic with guard and epidermal cells having crystal recorded on N. lingulata and N. mirabilis, while N. ampullaria, Nepenthes sp. and N. pectinata have uneven guard and epidermal cells. Phenetic analysis on morphological and anatomical variations suggest that Nepenthaceae in North Sumatera are divided into three (3) groups with similarity varies from 63-94%. Ecological study indicated that most species of Nepenthes are found in Mandailing Natal Sub-Province and Center Tapanuli Sub Province with 13 species, generally occupy mountain area covered with mosses and nearby swampy coastal area.