G. Aymard C., J. O. Rangel-Ch., Vladimir Minorta-Cely, Francisco Castro-Lima
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引用次数: 1
摘要
摘要对哥伦比亚“大草原”地区(阿劳卡省)季节性洪水稀树草原上的一新种马尾草(Bacopa llanorum)进行了描述和说明,并对其形态关系进行了讨论。根据它的二形叶(最里面的叶片丝状,最上面的叶片披针形-卵形),这个新种似乎与任何其他假马齿苋物种都没有亲缘关系。然而,它与B. reptans有几个共同的特征。提出了一种新的组合假马齿苋代替假马齿苋。此外,还包括哥伦比亚和委内瑞拉“Los Llanos”属的生态信息,以及关于eolic-limose平原的生态和区系记录。为该地区假马齿苋的种类鉴定提供了一个关键。在一个以同态叶为主的属中,假马齿苋(Bacopa llanorum)以其叶片二形性而闻名,使“Llanos del Orinoco”生物区该属的物种数量增加到20种。
Notes on the Genus Bacopa (Plantaginaceae, Gratioleae) in the Orinoquia Region of Colombia and Venezuela
Abstract. Bacopa llanorum, a new species from the seasonally flooded savannas of the “Llanos” region of Colombia (Arauca department) is described and illustrated, and its morphological relationships are discussed. On the basis of its dimorphic leaves (the innermost blade filiform, uppermost lanceolate-ovate), the new species does not appear to be allied to any other Bacopa species. However, it shares several other features with B. reptans. A new combination, Bacopa debilis, is proposed to replace Caconapea debilis. In addition, ecological information of the genus in “Los Llanos” of Colombia and Venezuela, and ecological and floristic notes about the eolic-limose plains, are included. A key for identifying species of Bacopa in this region is also provided. Bacopa llanorum is remarkable for its foliar dimorphism, in an otherwise predominantly homomorphic-leaved genus, and it increases to 20 the number of species of the genus in the “Llanos del Orinoco” bioregion.