The development of xylem is of mesarch.Stomata are monocyclic type.
脉、
、上胚轴的维管束均为外韧型。
The development of xylem is of mesarch.Stomata are monocyclic type.
脉、、上胚轴的维管束均为外韧型。
Petiolar modena, chief instrument 3 millimeter, without wool.
深 紫色,长仪3毫
,
。
Leaves alternate, shortly petiolate, leathery, margin entire, venation pinnate or palmately triplinerved.
互生，具短，革质，边缘全缘，羽状脉或者掌状离基三出脉的。
Trema polygama, described from Yunnan, differs in having the inflorescences shorter than the adjacent petioles.
表自云南，不同在于花序短于临近的。
Leaf base often narrowed into a petiole, spurless.
基部通常缩小成为，距。
Characteristics: Terrestrial ferns; stipes tuft, backlish at base; young fronds pinnaye with wider pinnae, when getting older, the fronds become bipinnate or tripinnatifid with slender pinnules.
地生，丛生，基部黑色；较年轻的子一回羽状复，较老的子二回或三回羽状复。
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