单词prothallus
n.: 原叶体
原叶体
复数：prothalli
In homosporous plants, there is only one type of prothallus with both male and female sex organs.
在具同形孢子的植物中，只有一种雌雄性器官兼备的原叶体类型。
true prothallus of ferns are mostly heart-shaped, green self-supporting, while others showed filamentous or ribbon.
真蕨类的原叶体多为心形，绿色自养，也有的呈丝状或带状。
Archegonial neck usually inclines or curves towards the base of the prothallus at maturity.
颈卵器成熟后，颈部常向原叶体基部倾斜或弯曲。
In vascular plants the diploid sporophyte is the dominant phase and in the ferns, for example, the gametophyte is a small prothallus.
在维管植物（蕨类）中二倍体的孢子体占生活史的主要部分，配子体仅为原叶体。
Equisetum class prothallus of cushion-like, with upright branches of the ribbon, green self-supporting;
木贼类的原叶体为垫状，具直立的带状分枝，绿色自养；
Changes of the Microtubule Arrays During Mitosis in Prothallus Cells of Dryopteris crassirhizoma
粗茎鳞毛蕨原叶体细胞有丝分裂过程中微管列阵的变化