One of my favorite sites for armchair botanizing is CalPhotos:
http://calphotos.berkeley.edu/
Type in a genus name and go exploring. So I did this with Silene, and there are some amazing species out there, why aren't these being grown?!? Here are some of my favorite EXTREME Silene species.
Silene serpentinicola (Serpentine Catchfly)
This is a California endemic, found in Del Norte Co. Amazing dwarf red-flowered species.
http://www.fs.fed.us/wildflowers/communities/serpentines/center/images/s...
http://calphotos.berkeley.edu/cgi-bin/img_query?rel-taxon=contains&where...
Silene salmonacea (Klamath Mountain catchfly)
This is a California endemic, found in Trinity Co, looks akin to S. hookeri, but look at those luscious orange colors in the 2nd and 3rd link below.
http://www.fs.fed.us/wildflowers/communities/serpentines/center/images/r...
http://www.calflora.org/cgi-bin/species_query.cgi?where-calrecnum=9477
http://calphotos.berkeley.edu/cgi-bin/img_query?rel-taxon=contains&where...
And while you're along for the ride, take a drive down Silene hookeri street.
http://calphotos.berkeley.edu/cgi/img_query?where-genre=Plant&where-taxo...
Silene campanulata var. glandulosa, Calusa Co, California
http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&enlar...
Silene parishii (Los Angeles Co, California)
http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&enlar...
http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&enlar...
Silene suksdorfii (Pierce Co, Washington)
This one I fell in love with when seeing it on Burroughs Mountain, a spur off Mr. Rainier in Washington, with brightly veined pouchy flowers. Tried growing it from the NARGS seed exchange a couple times, grew tiny plants for a few years each time but eventutally lost them. Worth trying again.
http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&enlar...
And lastly, I didn't include the photo links to S. californica, but judging from the CalPhotos images, there are some good dwarf forms of this otherwise tallish flame red species. You can go look.