U. 'Mrs. Marsh', 'Asenath Waite' and 'Lavina Whatley' are all cultivars of
U. calcyfida, bred by Barry Rice.
U. calcyfida likes warm, shady and humid conditions, I grow mine at the back of my lowland nepenthes terrarium. See the links on this page for details of these cultivars and Barry's paper on
U. calcyfida, as well as lots of other useful online publications
Barry Rice's Publications.
U. lateriflora is an easy to grow terrestrial Utric from Australia and
U. bisquamata is an easy S. African. Both of these species are self-pollinating in my collection, and care should be taken, so that don't invade neighbouring pots. I find mine grow and flower well under the same conditions as most easy, small terrestrials such as
U. sandersonii in peat/sand, kept wet.
I find
U. tricolor likes it a bit wetter than some terrestrial Utrics, and grow it with the water level with the soil surface most of the time. It's easy enough to grow, but tricky to get the conditions right for flowering (at least it is for some! ). See this recent thread,
U. tricolor.
U. longifolia is one of the 'larger-flowered' S. American Utrics that I find grows well in an mix of LFS, peat and perlite (1:1:1). I keep wet-damp rather than flooded.
I haven't grown my
U. tridentata long enough to offer much advice, I'm just growing it in peat/sand, like the other small terrestrials.
Vic