sessile oak
noun
1- a Eurasian oak tree with stalkless egg-shaped acorns, common in hilly areas with poor soils无梗花栎岩生栎。亦称DURMAST OAK.
1.1
- Quercus petraea, family Fagaceae.拉丁名Quercus petraea, 山毛榉科（壳斗科）。