1 lotus per zone, 1 hour respawn after picking, zones being Winterspring, EPL, Burning Steppes, and Silithus.
Wayback archive of wowhead shows 40 spawn points for Black lotus in azeroth.
I see comments from that same archive of wowhead saying that only 1 black lotus was available in azeroth at a time, but no timer.
Finding alot of misinformation and would appreciate a clear picture of how black lotus will work on this server.