Hortico's site is doing a very weird thing, isn't it? I've never seen that message on a site before.
When you go to HMF, look up the rose you want. There are several roses named Chloris, so click on the one that says it's an Alba. Then you'll see tabs across the top of that page. Click the tab that says "buy from." That takes you to page listing the HMF sponsors that carry the rose. At the bottom of that page, click on "View all nurseries selling this rose." That will give you the full list.
Incidentally, one of the best tabs on the HMF pages, in my opinion, is the "photos" tab (second from the left). It shows you all of the photos of the rose people have contributed to HMF.
