Nut 1 per cupule , usually longer than wide .

每壳斗用头撞1，比宽通常长。

Transverse section of cupule bracts circular .

壳斗苞片的横剖面圆。

Study on microwave assisted extraction of sawtooth oak cupule tannin .

微波辅助麻栎壳斗单宁浸提的研究。

Cupule bracts narrowly lanceolate , erect or reflexed .

苞狭披针形，直立的或反折。