Sori hemispheroid, in 2-3 series on each side along the costules, without indusium.

群圆形，沿中脉排成2-3行，无群盖。

Zoospore An asexual motile spore produced by a zoosporangium.

由游动产的无性可自由运动的。

The ontogeny of epiphyllous microsporangia Ginkgo indicated that the microsporophyll in Ginkgo is of phyllome origin.Possibly, the epiphyllous microsporangia is a peculiar chimera.

叶小银杏的个体发，表明银杏的小叶有叶性来源的性质，叶小银杏可能是一种奇特的嵌合体。

There are a lot of sporule mother cells in every sporangium, they are respective via meiosis hind, produce the sporule of 4 monoploid.

每个中有许多小母细胞,它们自经减数分裂后,产四个单倍体的小。

Indusium The flap of tissue, derived from the placenta, that encloses the developing sporangia in the sorus of a fern.

是一种起源于胎座（应为叶表皮译者注）的瓣片状组织，覆盖在蕨类植物群中正在发育的上。

Slide 1-18 The dark brown body (A) in this picture is a spore sac (ascocarp), called a cleistothecium.

幻灯1-18 在这张照片中，暗棕色的小体（A）是一种（果），称为闭壳。