net isomorphism

In the early december, the first bract primordium was formed in the axil scale at the cone base, then bract initiation had occurred in acropetal direction.

12月初，最初的苞片原基在雌球果原基的鳞片的叶腋处产生，之后其由基部向顶部连续发生。

Acropetal differentiation of the cambium layer continues as the primary root elongates.

形成层的向顶分化像初生根伸长一样在继续进行。

The process of decorticated seeds germination and haustorium formation is as follws: sprouting protuberance ( tapered shape) formation of germ tube ( slightness) germ tube growing widely intumescence in proximal end attenuation in acropetal end.

去种皮种子的种子萌发和初生吸器形成为露白突起（圆锥状）芽管（细长）芽管增粗基部膨大顶端变细的过程。核型胚乳，胚乳发育中后期胚囊合点端存在胚乳吸器；