Brain Cancer- is within a flower?

Does anyone know if a certain flower have been designated as an endorsed, or unofficial, flower for rememberence of someone who passed from Brain Cancer?
Another question too... is near a place around the Southern Calif, Mission Viejo area, that I should use so that some of the proceeds be in motion to any Cancer foundation? If there is a place on-line, I would settle for that too (although picking them out surrounded by person is nice and more "personal").
Thank you if anyone can backing.
*** In rememberence of my brother who passed at age 47 from a Glioblastoma Multiforme. June 11,2006. RIP Big Brother.Brain Cancer- is within a flower?
Glioblastoma Muliforme is a *****... I'm sorry... I'm lucky to have my form... not as hurriedly spreading... esophageal carcinoma... and I did it to myself... noone else to blame... wish in attendance was. If ya ever want someone to talk to, I'm available afternoon or night... don't sleep much... bequeath me an email or call. I'm sorry in the region of your brother, I lost mine at 7. sister at 35. sucks... sorry. take prudence, and even if ya don't write, be good to you, Rick
I am sorry for your loss, I be unable to find a specific flower but did find a ribbon, a gray ribbon is designated for brain cancer.