These secluded parts of gardens offer such a sense of surprise and mystery. We have many pleasances at Maymont in Richmond.

I checked out your spelling and came across:

"Chaffy; resembling or consisting of paleae, or chaff; furnished with chaff; as, a paleaceous receptacle."

...for paleaceous

But because it is very, very late, I misread 'chaff' for 'cliff' and thought I'd found quite a wonderful definition! Time for bed!