Leaf anatomical characters variation of Strobilanthes s.l. from Sumatra, Indonesia and its taxonomic implications

Abstract. Suratman, Suranto, Muzzazinah, Purnomo. 2022. Leaf anatomical characters variation of Strobilanthes s.l. from Sumatra, Indonesia and its taxonomic implications. Biodiversitas 23: 3705-3720. The objective this study was to evaluate leaf character among species Sumatra. A total 35 four genera previously recognized within the subtribe Strobilanthineae (Strobilanthes, Hemigraphis, Sericocalyx, Semnostachya) were used for paradermal section observations. seventeen consisting ten quantitative seven qualitative selected comparison. analysis showed great variability in majority tested characters. This result indicates large diversity occurs similarity dendrogram based data revealed two major clusters. first cluster consists eleven with regular epidermal cell shape straight wall a coefficient 0.67. second twenty that differed due their irregular undulate anticlinal 0.59. are valuable features taxa delimitation at level. results also support earlier works through molecular studies all members Strobilanthinae then accepted as group which could not be easily split into smaller component genera.