TABLE 1. Differential morphological characters between H in An atypical new aquatic species of Habenaria (Orchidaceae, Orchidoideae) from Goiás, Brazil

TABLE 1. Differential morphological characters between H. brachycalcarata and species morphologically related and their geographic distribution. BA = Bahia, ES = Espírito Santo, MG = Minas Gerais, MS = Mato Grosso do Sul, MT = Mato Grosso, PA = Pará, PB = Paraíba, PR = Paraná, RJ = Rio de Janeiro, RS = Rio Grande do Sul, SC = Santa Catarina, and SP = São Paulo. CharactersH. araniferaH. brachycalcarataH. repensPhyllotaxyAlternate spiralAlternate distichousAlternate distichousTuberoidsPresentAbsentAbsentStem and rachisUnwingedWingedWingedSupra-axillary protuberances in rachisAbsentPresentAbsentLateral sepalsDescendantsAscendingDescendantsPetal posterior segment1.2–1.9 mm long4.2–5(–5.2) mm long3–5(–6) mm longMargin of the median segment of lipFlatRevoluteFlatLip lateral segment(3.6–)7–9.3 mm long5–5.3 mm long3.5–6.2 mm longConnective apexTruncate or discreetly mucronateRounded or discreetly mucronateEmarginateRostellum mid lobe apexRoundedAcuteObtuseRostellum lateral lobes and canalsParallelConvergentParallelStigmatophore apicesParallel, connivent, not covering or exceeding the undivided basal part of the lip which is visible, straight, flatDivergent, separate, covering and Parallel, connivent, not covering or exceeding the undivided basal part of exceeding the undivided basal part the lip, slightly reflected towards the of the lip which is visible, straight, abaxial surface flatSpur2 mm long, much smaller than the 7.7–12 mm long, equal to or slightly pedicellate ovary, linear, dilated at larger than the pedicellate ovary, the apex, straight, apex rounded or linear, curved, apex obtuse or rounded, truncated, discretely and laterally entire 2-lobed6–10.5 mm long, equal to or slightly larger than the pedicellate ovary, linear, curved, apex obtuse or rounded, entireGeographical distributionArgentina, Uruguay and Brazil (RS and SC)Brazil (GO)Southern United States to northern Argentina, including Uruguay and Brazil (BA, ES, MG, MS, MT, PA, PB, PR, RJ, RS, SC and SP) ......continued on the next page