Species- Ferns (families, genera, species)‎ > ‎M---Z‎ > ‎P‎ > ‎Pteridaceae‎ > ‎Pteris‎ > ‎

Pteris biaurita



Fern of Ajibarang Limestone: Another fern from Ajibarang limestone area. ID is requested.
That is good old Pteris biaurita, with widely joined pinnule-bases [more correctly pinna-lobe bases] and non-apiculate pinna-lobe apices. So far I myself only found subsp. fornicata commonly in Java - where the costal arches formed by the anastomosing basal pair of veinlets are shallow and long, mostly extending from one pinna-lobe midrib to the next, and not coming up into a tall, more-or-less point just beneath the sinus. I have no idea if our common and widespread subsp. walkeriana is also there. But in this photo I can't see the venation anyway.
It would need a close up of the underside of a section of a pinna, preferably the second pinna up from the base - then we should be able to see the veins OK. But perhaps now the sender can answer this question himself from the information given? Good luck!
Fern For ID : Jim Corbett,Uttarakhand : 100714 : AK-18 5 posts by 2 authors. Attachments (1).
Fern seen deep inside the moist forest on 20/5/14. 
this is Pteris quadriaurita
This is the abundantly common and widespread lower-mid altitude species, Pteris biaurita. It is impossible though to see which subspecies (cytologically different) as one has to have a close-up photo of the venation between the pinna-lobes and the height and width of the areole.
Thanks to you and ... for the id.
During safari inside the forest, we are not allowed to get down from the vehicle.
Also we have to go by a very strict time frame once you are inside the gate.
Hence, this is the only picture I could get.