Three new species of Elatostema (Urticaceae) from Thailand Author Triyutthachai, Natthawut Applied Taxonomic Research Center, Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand Author Fu, Long-Fei https://orcid.org/0000-0001-8708-4718 Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin, 541006, China Author Triboun, Pramote National Biobank of Thailand, National Science and Technology Development Agency, Thailand Science Park, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand Author Wei, Yi-Gang Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin, 541006, China Author Pornpongrungrueng, Pimwadee https://orcid.org/0000-0002-7998-2064 Applied Taxonomic Research Center, Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand ppimwa@kku.ac.th text PhytoKeys 2022 2022-12-13 215 37 50 http://dx.doi.org/10.3897/phytokeys.215.94591 journal article http://dx.doi.org/10.3897/phytokeys.215.94591 1314-2003-215-37 CF64B07B72865652A0F582E2BF0447E4
Table 1. Comparison of Elatostema atroviride, E. bulbiferum, E. kaweesakii, E. rubricaule and E. saxatile.
CharactersE. atrovirideE. kaweesakiiE. rubricauleE. saxatileE. bulbiferum
Habitatlithophyte in limestone soilslithophyte in limestone creviceslithophyte on sandstone rockslithophyte on sandstone rockslithophyte in limestone crevices
Rhizomeslender rhizome or stoloniferouslarge swollen rounded rhizomeflattened, disk-like rhizomeflattened, disk-like rhizomeswollen rounded rhizome
StemSimple or branched, greenish, pubescentSimple or branched, greenish, glabrousSimple, reddish, glabrousSimple or branched, greenish, glabrousSimple or branched, greenish, glabrous
Nanophyllabsentabsentabsentpresentpresent
Leaf margindentateserrate to dentateentireserrateserrate
Leaf apexacuminateacuminateobtuseacuteacuminate to caudate
Staminate inflorescences: typeCapitateCapitateUmbellateUmbellateUmbellate
Staminate inflorescences: receptacleelliptic, chartaceous, pubescentrectangular, chartaceous, glabrousabsentabsentabsent
Staminate inflorescences: peduncle2-5 mm long2-7 cm long2- 3 cm long1-5 cm long2-5 cm long
Staminate flower: tepal number45555
Pistillate inflorescences: typecapitatecapitatecapitatecapitatecapitate
Pistillate inflorescences: receptacleoblong, membranous, pubescentrectangular, chartaceous, glabrouselliptic, membranous, glabrouselliptic, membranous, glabrouselliptic, membranous, pubescent
Pistillate inflorescences: peduncle2-4 mm long, glabrous5-10 mm long, glabroussessile to subsessile, glabrous0.5-5 mm long, glabrous0-2 mm long, glabrous
Pistillate flower: tepal number3absent555
Pistillate flower: staminodeabsent355absent
Achene6-8 ribbedsmoothsmoothsmoothsmooth