Another Chinese question

[tanithryudo]

Is there a difference between 寒梅 & 梅花? Or are they the same thing and "寒梅" is just a more poetic expression of plum tree flowers?

What about 腊梅? Image search turns up lots of yellow flowers for this one. Is it a different plant or just a different coloration of the same plant?

Are there any powdered art featuring 梅花 (red colored, possibly with snowy background)? Kind of like my IJ theme is currently featuring peony?

Flower language (Chinese)