What is the significance of the flowers that are placed on a student's desk after they leave Black class? So far on the series, every time a student is transferred out from Black class, different flowers are put on that student's desk the next morning.

 
 
 
 

Are these all flowers that really exist?
If so, what are their names and their significance?
And if not, what are they supposed to imply about each character?
What is the significance of each different kind of flower for each of the girls?
Yes, they are actual flowers. And according to this tweet from the anime's
official Twitter account, the hanakotoba (花言葉, literally "flower
words") that are hidden behind each flower have some relevance to each
character.


  See also:
  What is the relation between the flowers and the heroines in ED sequence of Photokano?


So far, the names of the flowers and their implied meanings have been stated
in the manga or by the anime staff in response to viewer questions.



Otoya Takechi


ヤマユリ (yamayuri, lit. "mountain lily") / 「人生の楽しみ」
(pleasure of life) 1


Photo by Wikimedia Commons user KENPEI /
CC BY-SA 3.0


Kouko Kaminaga


彼岸花1 2 (red spider lily)


「また会う日を楽しみに」1 2 (looking forward to
seeing you again)
「悲しい思い出」2 (sad memories)



Photo by Flickr user kenji mori / CC BY 2.0


Haruki Sagae


バーベナ (verbena) / 「家族の愛」 (family's love) 3


Photo by Flickr user TANAKA Juuyoh / CC BY 2.0


Shiena Kenmochi


アザミ (thistle) / 「復讐」 (revenge) 4


Photo by Wikimedia Commons user Qwert1234 /
CC BY-SA 3.0


Chitaru Namatame


赤バラ (red rose) / 「愛情」 (love) 4


Hitsugi Kirigaya


白バラ (white rose) / 「無邪気」 (innocent [childlike]) 4


Suzu Shutou


赤いチューリップ (red tulip) / 「恋の宣言」 (declaration of love)
5


Mahiru/Shinya Banba


ヒルガオ (hirugao, Japanese bindweed) / 「絆」 (bond
[human ties]) 6


Photo by Wikimedia Commons user KENPEI /
CC BY-SA 3.0
ヨルガオ (yorugao, moonflower) / 「妖艶」 (seductive) 6


Photo by Wikimedia Commons user KENPEI /
CC BY-SA 3.0


Isuke Inukai


赤いカーネーション (red carnation) / 「愛を信じる」 (believe in
love) 6


Sumireko Hanabusa


アイスランドポピー (Iceland poppy) / 「慰め」 (comfort
[consolation]) 7


Photo by Wikimedia Commons user David.Monniaux /
CC BY-SA 3.0




References

1. 悪魔のリドル (2), ISBN 978-4-04-121056-7
2. https://twitter.com/akumariddleQA/status/460430373109788672 from
the Q&amp;A after episode 4
3. https://twitter.com/akumariddleQA/status/462962907437735936 from
the Q&amp;A after episode 5
4. https://twitter.com/akumariddleQA/status/468363714454773761 from
the Q&amp;A after episode 7
5. https://twitter.com/akumariddleQA/status/470574398374551552 from
the Q&amp;A after episode 8
6. https://twitter.com/akumariddleQA/status/475654677640384512 from
the Q&amp;A after episode 10
7. https://twitter.com/akumariddleQA/status/478499435496747008 from
the Q&amp;A after episode 11