???
Paphs are native to your area? Did some escape from cultivation?
Where do you live? Are you an American living in Asia presently or are you an immigrant from Asia who has come to the US?
Paphiopedilum spp. are native to Asia.
Do you mean Paphs are native to your homeland in Asia?
Cypripedium spp. can be found native to North America, Far Eastern Europe, and East Asia.
Are you talking about Cyps?
Unless...
...You live in Florida, where
Oeceoclades maculata can be confused for a Paph because of it's mottled leaves. If it is
Oeceoclades maculata, then it's not technically native to the US, it's a naturalized plant to the US. It's native origins are from Africa and Madagascar.
Oeceoclades maculata has actually become a pan-tropical weed, (another pan-tropical weed is
Spathoglottis plicata, whose native origins are from tropical Asia).
Oeceoclades are closely related to
Eulophia and are in the Cymbidium Alliance.
Oeceoclades maculata:
http://www.orchidspecies.com/oecmaculata.htm
As for orchids that grow along wet places. There are a lot.
There are a few terrestrial orchids that grow along streams or near streambanks.
One famous group of orchids are the temperate stream-side growing "evergreen" Disas (
Disa aurata,
Disa cardinalis,
Disa tripetaloides,
Disa uniflora). They're from South Africa.
Another group of wet growers are Stenoglottis spp., also from South Africa.
Then there are the epiphytical (epiphytes = plants that grow on trees) tropical cloud forest inhabitants of Central and South America, as well as the Caribbean islands. Namely, the orchids from the Pleurothallid Alliance, which include genera such as Pleurothallis, Masdevallia, Dracula, Scaphosepalum, Barbosella, Trisetella, Porroglossum, Lepanthes, Lepanthopsis, Trichosalpinx, etc.
There are also tropical lithophytes (lithophytes = plants that grow on rocks) such as
Phragmipedium spp. and Sarcoglottis.
Nervilia spp. are also found along streams. The problem with this group of plants is that they go dormant.
There are also the bog plants native to the US,
Calopogon tuberosus being one of them.
Pogonia ophioglossoides is another. But, again, these go dormant.
How to start an orchid terrarium?
You might try checking out the Terrarium gardening section of this board. lots of good information there.
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