Rosalyn Dekkard, code name Blackrose, is a plant manifestor. She's a junior in Poe cottage, and appears in a number of stories as a bit character.
The following looks like original canon information seeded in the first wiki as starter material.
Blackrose has the power to manifest various plant forms, thorny rose vines with buds attached a specialty. She can heterodyne these manifestations with existing plant forms to dramatically accelerate their growth. Blackrose is very aggressive sexually, and genuinely enjoys putting people- especially pushy macho boys- into uncomfortable situations. But this is just her sense of humor at play; she draws the line at really screwing people over. She enjoys light B&D play, especially with her vines, but can be either a Top or a Bottom. Again, she is a responsible Top, and will immediately stop any ‘play’ if it starts to get out of hand, or her playmate really isn’t into it. Despite her ‘predator’ act, Blackrose has genuine concern for the Froshes (especially the lesbian ones). Former lovers by and large remember Blackrose fondly (if with no small amount of exasperation)
End original canon material.
She's about 5'7", 125 lbs with the lush curves of a homecoming queen. She has emerald green eyes set in a triangular face and framed by ravenswing black hair, hanging in loose waves over her shoulders and down to her waist. She has the somewhat amused expression of a pantheress regarding a flock of tender young lambs.[1]
Lily temporarily has her shape at the beginning of A Wellspring of Sorrows.
She escorts the incoming young lesbians and helps with room assignments.[1] She organizes the hot tub party.[2] She also shows up in the fight over stealing the bust of Poe.[3]
She was involved with Cornflower in 2005-06, and became attracted to Kayda in Spring 2007 to the point that she was reminded of her first love, a Poesie named Janet who really broke Rosalyn's heart and left her vowing to never get that that involved again[4]