From what little I've read, these plants are somewhat like droseras and fairly easy to cultivate. I tried searching for posts about them in this forum but apparently there are none. Does anyone have any experience with these?
From my experiences the hardest plants to grow are temparates and easiest are tropicals, but it might just be because of my zone i have to do a little extra work to overwinter my temparates, i currently grow, d. adelae, and d. capensis and they are very easy, any tropical plants are easy to grow but if your a begginner i would stay away from heliamphora, cepholatus, which require little more care than say a nepenthes or drosera, check out cobraplant.com for info on temparates and tropicals
Here is a link that might be useful: cobraplant.com
Coincidently, I happen to be growing them. They're new to me this year and what I have read is that they are cultivated like a sundew. I had a pot in a window sill and one outside. Neither are doing better or worse than the other and neither are doing anything extraordinary. I have no flowers. Here is a picture from a month or so ago:
They look better than that right now and hope to have updated pictures this week.
Petiolaris: They look a bit more like pings than sundews. Anyway, I've got one coming in the mail. I probably spent too much on it, but that's how I am with plants, especially carnivores.
They are cultivated like most sundews, but aren't related to sundews. They're also new to me, so I'm learning as I go.