Elaeagnus 
胡颓子属
植
elaeagnus[ noun ]
oleaster
<noun.plant>
Elaeagnus \E`l[ae]*ag"nus\, n. [NL., fr. Gr. ? a B[oe]otian
marsh plant; ? olive + ? sacred, pure.] (Bot.)
A genus of shrubs or small trees, having the foliage covered
with small silvery scales; oleaster.
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- It is a feature which I would prefer towards a green boundary, but it is an extremely good one. In a smaller space, the best bet is the shrubby Elaeagnus commutata which turns up as a centrepiece in artistic exhibits at Chelsea flower show.