TABLE 1 in Cephalanthera yintiaolingensis (Orchidaceae, Epidendroidee, Neottieae), a new mycoheterotrophic orchid from Northeast Chongqing, China

TABLE 1. Morphological comparison of Cephalanthera yintiaolingensis, C.exigua, and C. subaphylla. Owing to the unavailable physical material, characters of C.exigua were referred to Seidenfaden (1975), Pedersen et al. (2009), and Nuraliev et al. (2014), and those of C. subaphylla were referring to Miyabe & Kudô (1932), Hayakawa et al. (2016), and Shin et al. (2019). C. yintiaolingensisC. exiguaC. subaphyllaNutrition modeMycoheterotrophicMycoheterotrophicMixotrophicRootsObviously fleshySlightly fleshySlightly fleshyLeavesAchlorophyllous and sheath-likeAchlorophyllous and sheath-likeWith 1–2 leaves bearing blade ca. 3without obvious bladewithout obvious bladecm longLower bractsShorter or same length as pedicel andShorter or same length as pedicel andObviously longer than pedicel andovaryovaryovarySepalsObtuse at apexAcuminate at apexMore or less emarginate at apexLateral petalsObtuse at apexObtuse at apexMore or less acute at apexLipSpur conical, acuminate at apex;Without spur; lateral lobes falcate;Spur conical, obtuse at apex; laterallateral lobes falcate; middle lobemiddle lobe reniform with cuspidatelobes ovate-triangle; middle lobeflabellate with acuminate apex; lipapex; lip with three lamellaetransversely reniform with obtusewith five to seven lamellaeapex; lip with three lamellaeFertile stamenAnther hinged at the top of columnAnther hinged at the top of columnAnther sited directly on the top ofwith a short stalkwith a short stalkcolumnDistributionCentral West ChinaLaos, Thailand and VietnamJapan and Korea