Mmmm - I hoping your red bud is the Stapelia leendertziae ".....is most conspicuous when in flower owing to the unique large, bell-shaped, deep reddish to dark purple flowers that are up to 120 mm long...." 'cause I know you're good enough to share pics with us!
My only Stapelia right now is the S. grandiflora, I believe. Just got it last year, hope to see it bloom this year.