A box arrived today with an order from Plants Delights Nursery Inc. (external link). What great plants they sent! Plant Delights never disappoints.

Bletilla striata 'Kuchibeni'

Colocasia fallax 'Silver Dollar'

Dichromena latifolia

Juncus effusus 'Curly Wurly'

Kosteletzkya virginica 'Immaculate'

Rhexia virginica

Spiranthes cernua var. odorata
I’m really excited to try these out. These are all known as wetland/wet soil plants, but the most important variable in assessing their suitability for riparium culture will be their respective dormancy requirements. I know that Colocasia fallax requires a short, cool dormancy period, but some of these other selections might require extended periods of cold quiescence, which might be more difficult to accommodate.
How did these end up faring? I hope that they all managed to flourish.
Richard,
Good to hear from you. I still have all of these. Some have grown better than others. The Dichromena has done well and even flowered.
I hope to post updates on all of these in a couple of weeks.