Oreocharis hainanensis (Gesneriaceae), a new species from karst regions in Hainan Island, South China Author Ling, Shao-Jun 0000-0002-4675-8250 Ministry of Education Key Laboratory for Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, Hainan University, Haikou 570228, China & Center for Terrestrial Biodiversity of the South China Sea, Hainan University, Haikou 570228, China & lingsj @ hainanu. edu. cn; https: // orcid. org / 0000 - 0002 - 4675 - 8250 lingsj@hainanu.edu.cn Author Wen, Fang 0000-0002-3889-8835 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 & Gesneriad Committee of China Wild Plant Conservation Association, National Gesneriaceae Germplasm Resources Bank Guangxi Institute of Botany, Gesneriad Conservation Center of China, Guilin 541006, Guangxi, China & wenfang 760608 @ 139. com; https: // orcid. org / 0000 - 0002 - 3889 - 8835 Author Ren, Ming-Xun 0000-0002-4707-2656 Ministry of Education Key Laboratory for Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, Hainan University, Haikou 570228, China & Center for Terrestrial Biodiversity of the South China Sea, Hainan University, Haikou 570228, China & renmx @ hainanu. edu. cn; https: // orcid. org / 0000 - 0002 - 4707 - 2656 renmx@hainanu.edu.cn text Phytotaxa 2022 2022-03-09 538 4 281 291 journal article 20343 10.11646/phytotaxa.538.4.2 06fa7efa-510a-4505-87b3-575b12980270 1179-3163 6340385
TABLE 1. Comparison of diagnostic characters of Oeocharis hainanensis and all its congeners in Hainan Island.
CharactersO. hainanensisO. jasmininaO. dasyanthaO. dasyantha var. ferruginosaO. flavida
Corolla colouryellowyelloworange-red to yelloworange-red to yelloworange
campanulate, 1–1.5 cm long, corollanarrowly tubular, 1.7–2.2 cm, long,conical, 1.6–2.4 cm long, corolla width conical, ca. 1.6 cm, tube 9–1.1 mm,campanulate-tubular, 1.7–1.9 cm
Corolla tubewidth 1–1.7 cm, corolla mouth width 3–4.5 mmcorolla width 1.8–2.2 cm, corolla mouth width 3–4.5 mm0.9–2 cm, corolla mouth width 6–7 mmcorolla width 0.9–1.9 cm, corolla mouth width 6–7 mmlong, corolla width 1.6–1.8 cm, corolla mouth width 6–8 mm
Corolla symmetryzygomorphicactinomorphiczygomorphiczygomorphicactinomorphic
Leaf blade shapeobovate, ovate to broadly ovate, rarely broadly ovateovate to broadly ovate, rarely elliptic or obovateovate-elliptic to broadly ovateovate-elliptic to broadly ovateovate-elliptic to broadly ovate, rarely broadly elliptic
Leaf base shapecuneate, rarely subroundedcordate to roundedoblique, cuneate to subrounded or cordatesometimes oblique, cuneate to subcordateoblique, subrounded
Leaf base marginshallowly crenate-serratenearly entire to shallowly crenate, apex roundedserrulate or crenate-serrate, apex acute to roundedcrenate-serrateshallow crenate
Stamensexserted, didynamous, staminode 1included, didynamous, staminode 1exserted, equivalent, staminode absentexserted, didynamous, staminode absentincluded, equivalent, staminode 1
Anthersovate, 2-loculed, dehiscing longitudinallyovate, 2-loculed, dehiscing transverselybroadly oblong, 2-loculed, dehiscing longitudinallybroadly oblong, 2-loculed, dehiscing longitudinallyhorseshoe-shaped, 1-loculed, dehiscing transversely
Filamentspubescentpubescentpubescentpubescentglabrous
Pistilca. 16 mm longca. 9 mm longca. 22 mm longca. 22 mm longca. 9 mm long
HabitatKarst at low altitudeMountain top, non karstMountain top, non karstMountain top, non karstMountain top, non karst