Pippi, welcome to our forum, and welcome to daylilies! The link Michelle gave you above to the daylily club's website terms page is a good one to bookmark. they have definitions, most with photos, to all the most common terms used about daylilies.
Dave has in the works to add some space to the right side bar for moderators to put some links to web pages or to classic threads and such. I will be putting one there to the AHS webpage, database and terms page, if they will all fit!