Well, here is an nice convenient comparison below between the real flowers, and the drawings on the cards.
Enjoy!

February (Plum)

March (Cherry)

April (Wisteria)

May (Iris)

June (Peony)

July (Clover)

August (Pampas)

September (Chrysanthemum)

October (Maple)

November (Willow)

December (Paulownia)

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