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表1. H. brachycalcarata与形态近缘物种的形态差异性状及地理分布。其中缩写BA代表巴伊亚州（Bahia），ES代表圣埃斯皮里图州（Espírito Santo），MG代表米纳斯吉拉斯州（Minas Gerais），MS代表南马托格罗索州（Mato Grosso do Sul），MT代表马托格罗索州（Mato Grosso），PA代表帕拉州（Pará），PB代表帕拉伊巴州（Paraíba），PR代表巴拉那州（Paraná），RJ代表里约热内卢州（Rio de Janeiro），RS代表南里奥格兰德州（Rio Grande do Sul），SC代表圣卡塔琳娜州（Santa Catarina），SP代表圣保罗州（São Paulo）。 各形态性状对比详情如下： 1. 叶序（Phyllotaxy）：H. aranifera为互生螺旋状；H. brachycalcarata为互生二列状；H. repens为互生二列状。 2. 块茎状突起（Tuberoids）：H. aranifera存在；H. brachycalcarata缺失；H. repens缺失。 3. 茎与花序轴（Stem and rachis）：H. aranifera无翅；H. brachycalcarata具翅；H. repens具翅。 4. 花序轴腋上突起（Supra-axillary protuberances in rachis）：H. aranifera无；H. brachycalcarata有；H. repens无。 5. 侧萼片（Lateral sepals）：原文本此处为Descendants，疑为排版误差，结合分类惯例推测为下垂状；H. brachycalcarata为上升状；H. repens同前一物种性状，疑为下垂状。 6. 花瓣后裂片（Petal posterior segment）：H. aranifera长1.2–1.9 mm；H. brachycalcarata长4.2–5(–5.2) mm；H. repens长3–5(–6) mm。 7. 唇瓣中裂片边缘（Margin of the median segment of lip）：H. aranifera平截；H. brachycalcarata外卷；H. repens平截。 8. 唇瓣侧裂片（Lip lateral segment）：H. aranifera长(3.6–)7–9.3 mm；H. brachycalcarata长5–5.3 mm；H. repens长3.5–6.2 mm。 9. 药隔顶端（Connective apex）：H. aranifera平截或具细尖头；H. brachycalcarata圆形或具细尖头；H. repens微凹。 10. 蕊喙中裂片顶端（Rostellum mid lobe apex）：H. aranifera圆形；H. brachycalcarata急尖；H. repens钝形。 11. 蕊喙侧裂片与通道（Rostellum lateral lobes and canals）：H. aranifera平行；H. brachycalcarata会聚；H. repens平行。 12. 柱头柄顶端（Stigmatophore apices）：H. aranifera平行、靠合，不覆盖或超出唇瓣未分裂的基部（该基部清晰可见，直且平坦）；H. brachycalcarata开展、分离，覆盖并超出唇瓣未分裂的基部，略向远轴面反折；H. repens平行、靠合，不覆盖或超出唇瓣未分裂的基部（该基部清晰可见，直且平坦）。 13. 距（Spur）：H. aranifera长2 mm，远小于具梗子房，线形，先端膨大，直，先端圆形或平截，侧面具不明显的全缘2浅裂；H. brachycalcarata长7.7–12 mm，与具梗子房等长或略长，线形，弯曲，先端钝或圆形；H. repens长6–10.5 mm，与具梗子房等长或略长，线形，弯曲，先端钝或圆形，全缘。 地理分布：H. aranifera分布于阿根廷、乌拉圭及巴西（南里奥格兰德州、圣卡塔琳娜州）；H. brachycalcarata分布于巴西（戈亚斯州，GO）；H. repens分布于美国南部至阿根廷北部，包括乌拉圭及巴西（巴伊亚州、圣埃斯皮里图州、米纳斯吉拉斯州、南马托格罗索州、马托格罗索州、帕拉州、帕拉伊巴州、巴拉那州、里约热内卢州、南里奥格兰德州、圣卡塔琳娜州及圣保罗州）。 ……续下页