### Clue: One Pole following straightforward German writing about border flower (7,8)
### Answer: EVENING PRIMROSE 
 ### Explanation: Definition: flower
 I(Roman numeral for "one") N(abbrev. for "north", one of the geographic poles) **placed under**(following …, in a down clue) EVEN(straightforward;straight;even, as in a straight;even;fair fight) + G(abbrev. for "German") + PROSE(ordinary writing, not in verse) **containing**(about) RIM(the border;the edge).