I'm in the middle of writing a couple of articles for PFK. I figured you guys might find my list of interest. Please feel free to add to, all plants are from Tropica so they'll be some extra/missing no doubt for US citizens.

Anubias barteri var. nana
Anubias barteri var. nana 'Petite'
Bacopa australis Bacopa monnieri
Bolbitis heudelotii
Ceratophyllum demersum
Cladophora aegagropila
Cryptocoryne beckettii ''petchii''
Cryptocoryne parva
Diplidis diandra
Echinodorus angustifolius
Echinodorus parviflorus 'Tropica'
Echinodorus quadricostatus var. ''magdalenensis''
Echinodorus tenellus
Eleocharis acicularis
Eleocharis ''parvula''
Glossostigma elatinoides
Hemianthus callitrichoides ''Cuba''
Hemianthus micranthemoides
Hydrocotyle sibthorpioides (maritima)
Hygrophila corymbosa ''Compact''
Lilaeopsis brasiliensis
Lilaeopsis mauritiana
Lilaeopsis novae-zelandiae
Littorella uniflora
Lobelia cardinalis
Ludwigia arcuata
Lysimachia nummularia 'Aurea'
Marsilea hirsuta
Micranthemum umbrosum
Microsorum pteropus ''Narrow''
Microsorum pteropus 'Windeløv'
Monosolenium tenerum
Mayaca sellowiana
Pogostemon helferi
Ranunculus limosella
Riccia fluitans
Riccia sp. ''Dwarf''
Rotala rotundifolia
Rotala sp. ''Green''
Rotala sp. ''Nanjenshan''
Rotala wallichii
Utricularia graminifolia
Vallisneria nana
Vesicularia sp. ''Christmas''
Vesicularia dubyana

Plants for a nano?

Regards,
Tom Barr