Is the poem recited in Orache one of Nabokov's, or from somewhere else - I can't seem to find it anywhere else.
"( ... along a narrow margin overgrown
with clover ... or ache ...)"
"... with clover and with clinging orache"
Apollon Maykov’s poem Niva (“The Cornfield,” 1856) begins as follows:
По ниве прохожу я узкою межой,
Поросшей кашкою и цепкой лебедой.
I walk along a cornfield’s narrow margin
Overgrown with clover and with clinging orach.