Abstract: Subspecies haec a subsp. pectinata megasporophyllis intra glabris, inferne stipitato, stipitis 3-17.5 cm longis , ovulis 2-6 infra medium praeditis; seminibus (testa excussa) mimoribus, 3-3.5 cm longis, 2-2.7 cm diametribus; microsporphyllis emarcidis praeter apicem rhombiformem dense tomentosum glabris, ca. 4 cm longis; folia lobis costis prominentiis, ad centrum exsulcis; caule inferne lubrico, basi ramosodistinguenda.

Key words: Cycadaceae

摘要： 本亚种与原亚种的主要区别是大孢子叶里面无毛，下部急缩成的柄长3-17.5cm,中部以下有胚珠2-6枚；种子(去种皮)较小，长3-3.5cm,直径2-2.7cm;小孢子叶已干枯，除鞭形顶部密被子绒毛外，其余无毛，长约4cm，叶裂片中脉隆起，脉中央无糟；茎干下部平滑，基部具分枝.

关键词: 苏铁科, 苏铁属, 新亚种, 蔓耗苏铁