Brown Veins are also located in:
Haunted House:
Foyer
Vanity Room
Ahh kk, so I reread the info from the basil picture and the wording seemed to be more confusing after reading it again.
From what I am getting, how the system works is that flowers/veins spawn based on the "singles" digits of the monsters level and what is between it as well, and the numbers would cycle through as well, so 9 would go back to 0 and so forth (would explain the map the spawning for the map I used).
So yeah you were right Defenestration, its just the info from the basil picture was just a bit off.
Brown Veins are also located in:
Haunted House:
Foyer
Vanity Room
Umbraphilia is pretty decent…electrophilia is pretty decent, too