rodmarquezjr

Just got these yesterday. They looked new to me. I suspect the "Grand Leaf" may be what hobbyists in the US call the "Ahnold" fern or "Broad Leaf" in Thailand and Singapore. The "Long Thin Leaf" is totally new to me though. Some leaves have dentate margins. Both have leaves that can reach 12 inches long.

Grand Leaf
http://i107.photobucket.com/albums/m...Picture123.jpg

Long Thin Leaf
http://i107.photobucket.com/albums/m...Picture125.jpg

miremonster

Hello,
this "Long Thin Leaf" is curious to me... Not because of the length and the thinness of the leaes, there are forms of M. pteropus with bigger length/width ratio. But these leaf margins and the rather blunt base of the leaf blades are not characteristic of M. pteropus, and I guess it could be another fern species. Could You make a close-up photo of the venation pattern? Best visible on the undersurface of the leaf.

rodmarquezjr

I was suspicious of it as well! After asking and looking around, "Long Thin Leaf" turns out to be a Bolbitis. The venation is different compared to my other Microsorum varieties. It's still alive submersed after a week but I'd give it six months first before saying it may be a true amphibious fern. I guess I was too excited for my own good when I saw it in the LFS.

miremonster

Very interesting! A friend of me collected a little fern in Borneo occuring on rock at the water level of a stream and looking similar to Your "Long Thin Leaf". The pteridologist Dr. H. Schneider told me that it is likely a Bolbitis. This genus is said to be difficult and comprises many variable species. A number of them are rheophytes (like B. heudelotii), and probably some forms of the highly variable B. heteroclita are more suitable for submerged growth than the regularly offered form of this species.

miremonster

Hello rodmarquezjr,

What happened with Your narrow-leaved Bolbitis submersed?

jazzlvr123

very interesting plant let us know how it works out