I think Nhu highlighted the point that in wiki-type (crowd-sourced) data environments there is often a tension between rigidity and participation. The tighter the contribution rules, the fewer the entries. I would suggest an approach to balancing these concerns is: (a) to allow the rules for contribution be left fairly liberal, but (b) to permit wiki administrators to "yellow flag" entries as to which there is some controversy. That way members could post their entries about Aquilegia (or whatever) if their enthusiasms moved them to do so, and the administrators could flag these entries with the note that some members have questioned whether Aquilegia qualify as geophytes.