So the erubescens don't branch much, Xeramtheum? I saw a nice picture of it in a hanging basket in the database here, by Pirl. I wondered how many plants and what she had to do to get it to drip like that. When you say bigger do you mean plant-wise or blossom-wise? It does look like the blossoms are bigger. Wislizensis blossoms look smallest of the three.