The most common and most likely answer to this crossword clue is the 7 letter word SPIRAEA
S
P
I
R
A
E
A
Buddy explains!
The straight part
We know that "member of the Rose family" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case member of the rose family = spiraea.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SPIRAEA mean?
SPIRAEA noun- Any of many flowering shrubs, of the genus Spiraea, that have clusters of white or pink flowers
- The Astilbe.