1. Zath - Favorite is probably U. calycifida, because it includes the Lovecraftian cultivars, whose mythos I am a huge fan of. Learning about them from B. Rice's articles helped stoke the fires of my CP obsession in the first place.
2. SFLguy - Utricularia Delphinioides - although usually purple, it can turn a deep blue that I believe is unique to Utricularia (biloba comes fairly close though I believe), and quite simply, it's beautiful
3. charlie - My favorite is U. purpurea I love seeing pictures of them in mass flower. That's why I "need" biloba
4. PitcherPlantr - My favorite would probably be Utricularia westonii because of the brilliant red bladders it produces just above the surface. It is quite a unique species.
5. hcarlton - U. regia, as of currently. The multiple colors and unique split petal shape are gorgeous; second might be U. volubilis, for the rich color and shape.
6. rjhaway - My favorite would probably be U. quelchii because I like the bright red flowers.
7. ErrorEN - U. arnhemica. Why? Because above ground traps!
8. Clue - U. multifida, not just because of the amazing in situ shots of fields of flowers, but because Polypompholyx is just so much fun to say.
9. patrickntd - U. foliosa. Although its flower is not attractive, I like its well organised and dense traps arrangement as well as its vigorous growth.
10. gnathaniel -- U. pubescens mostly because I love the growth habit, which reminds me of the ripples from raindrops hitting a pond. Hard to choose a favorite, though, Utricularia includes so many beautiful plants I'd like to grow someday.
11. nikki630 -- U. sandersonii because ....
https://www.youtube.com/watch?v=GYM6snQ4HUE
12. KATastrophe - its kind of a tie between Utricularia cornuta and its beautiful yellow flower and U. Menziesii and its really unique flower shape and beautiful color and how it grows is water but doesn't actually live submerged in it...its too hard to choose! I wish utrics were easier to find where i am.
13. chch - U. pubescens. I like the small circular leaves similar to Nasturtium. The petiole is connected to the center rather than the edge of the leaf. The leaves can be a bit slimy.