Table. Diagnostic characters of Kaempferia jenjittikuliae and closely related taxa in KAEMPFERIA JENJITTIKULIAE (KAEMPFERIA SUBG. PROTANTHIUM: ZINGIBERACEAE), A NEW, ENDANGERED SPECIES ENDEMIC TO THAILAND

Table. Diagnostic characters of Kaempferia jenjittikuliae and closely related taxa
CharacterK. jenjittikuliaeK. lopburiensisK. rotundaK. udonensi sLeafy shootAdpressed to theAdpressed to theUpright leaves,Adpressed to thegroundground13–60(–78) cm tallgroundLeaf sheathConspicuouslySmooth, hairySmooth, usually hairySmooth, hairylongitudinally ridged,hairyLeaf shapeBroadly ovate toSuborbicular toLanceolate-oblong toBroadly ovate tosuborbicular, 18–46 ×orbicular, 19–40 ×elliptic, 16–48(–60) ×suborbicular, 19–48 ×16–40 cm18–38 cm5–20 cm18–40 cmFloral planePerpendicular to theParallel to the ground:Perpendicular to theParallel to the ground:ground: staminodeslateral staminodesground: staminodeslateral staminodes andupright to slightlyand labellumupright to slightlylabellum horizontal, inarcuate and labellumhorizontal, in onearcuate and labellumone planedeflexed distal halfplanedeflexed distal halfLabellumFlatInvolute, enclosing theFlatInvolute, enclosing thebaseantherantherIncisionAround half ofMore than two-thirdsAround half ofMore than two-thirdslabellum lengthof labellum lengthlabellum lengthof labellum lengthAnther crestOvate, broadly ellipticBroadly ovate, obovateOblong to ovateBroadly ovate, obovateshapeto obdeltoidto obdeltoidto obdeltoidAnther crestIrregular trilobedCrenate, irregularBifid to bilobed,Crenate to undulateapex(middle lobe widertrilobed to deeplyusually with 1–3 smallthan side lobes) tomultilobed-crenateteeth between lobestetralobed