Anatomical traits and phytochemical screening of Amorphophallus synandrifer, an endemic species from Vietnam

Amorphophallus synandrifer is a rare and native species to Vietnam. The present study is to provide the micro-morphological characteristics and the phytochemical screening of this species. As a result, the micro-morphological features from the different organs of A. synandrifer are firstly provided in which they are like those of Amorphophallus scutatus and A. curvistylis. The preliminary phytochemistry of the ethanol extracts isolated from the leaf blade, petiole, spathe/spadix and penduncle of A. synandrifer were found to be rich in phenolic, tannin, alkaloid, flavonoid, saponin, terpenoid, steroid and coumarin. Furthermore, the leaf blade extract showed the highest quantitative concentration with the total triterpene, flavonoid and polyphenol contents of 8.08 mg OAE/g DW, 33.39 mg QE/g DW and 71.48 mg GAE/g DW, respectively, followed by the spathe/spadix, peduncle and petiole extracts.