Data from: Siderasis albofasciata sp. nov. (Commelinaceae), endemic to the state of Espírito Santo, Brazil, and the typification of S. fuscata

A new species of Siderasis from the state of Espírito Santo is here described. This new species is readily differentiated from S. fuscata by its sessile to subpetiolate leaves covered by hyaline to light-brown indumenta, blades with a well-defined white stripe along the midvein on the adaxial side of the blade, main axis of the main florescence elongate, thyrsi reduced to one elongate cincinnus, bracteoles present, anthers purple to bluish–purple, filaments and style apically purple to bluish–purple, aril cream-colored and slightly hyaline, and by the production of unique axillary flagelliform-shoots after the flowering period. I present a description of this new species, along with illustrations, a distribution map, comments on conservation assessment, ecology and taxonomy, and a table comparing the new species with the only other accepted species in Siderasis. Furthermore, I designate a lectotype and an epitype for S. fuscata.

本文记述了产自圣埃斯皮里图州（Espírito Santo）的绒毡兰属（Siderasis）一新种。该新种可通过以下特征与褐绒毡兰（S. fuscata）相区分：叶片无柄至近无柄，被覆透明至浅褐色毛被；叶片上表面沿中脉具清晰白色条纹；主花序主轴伸长，聚伞圆锥花序退化为单个伸长的蝎尾状聚伞花序；具小苞片；花药呈紫色至蓝紫色，花丝与花柱顶端为紫色至蓝紫色；假种皮乳黄色且略透明；花期后可产生独特的腋生鞭状嫩枝。本文除对该新种进行形态描述外，还配套提供了插图、分布地图、保护评估评述、生态学与分类学讨论，以及一张将新种与绒毡兰属唯一其他公认物种进行对比的对照表。此外，本文为褐绒毡兰（S. fuscata）指定了后选模式标本与附模式标本。