Dryopteris , commonly called wood fern, male fern, or buckler fern, is a genus of about 250 species of ferns with distribution in the temperate Northern Hemisphere, with the highest species diversity in eastern Asia. Many of the species have stout, slowly creeping rootstocks that form a crown, with a vase-like ring of fronds. The sori are round, with a peltate indusium. The stipes have prominent scales.Hybridisation is a well-known phenomenon within this group, with many species formed by this method

It looks like it is Bracken (Pteridium) a genus of large, coarse ferns in the family Dennstaedtiaceae. Ferns (Pteridophyta) are vascular plants that have alternating generations, large plants that produce spores and small plants that produce sex cells (eggs and sperm). Brackens are noted for their large, highly divided leaves. They are found on all continents except Antarctica and in all environments except deserts. The genus probably has the widest distribution of any fern in the world.

That is definitely not bracken. I also doubt if that is anything belong to Dryopteridaceae. Please check the spore (if any), venation and petiole scale. I'll go for Cyatheaceae or Athyriaceae (Diplazium perhaps). Some of them love shaded places.

From this picture I would say a species of Cyathea (s.l.). Check the dorsal (abaxial) leaf side for the sori and indusia. Species in Cyatheaceae have trilete spores, those in Diplazium have monolete spores [just in case you'd have to decide between these genera].

From this picture I can say with no doubt that is Polypodiophyta. For more detail identification fotos of the dorsal side of their leafs and leafstalks is needed. For example this plant can be as good some Pteridium species as some Cyathea species or some another species from another genuses. Also searching plants with such habitus in the published issues of local floras may be helpful for you. Best wishes

Thank you so much

Hi saravanan,actually plant identification is easy when it is observes its habitat. I think it is one kind of pteris.The leaf shape and the lower side of spore arrangement is important to know the Sc. name.Regards- Taslima begum

Hi

I suggest you to make a herbarium of the plant and send it to the Botanical Survey of India, Kolkata ( Botanical Survey of India CGO Complex, 3rd MSO Building, Block F(5th & 6th Floor), DF Block, Sector I, Salt lake City, Kolkata - 700 064)

OR

National Botanical Research Institute (NBRI) Lucknow, or to Central Institute of Medicinal and Aromatic Plants CIMAP, Lucknow for identification. This institutions provide paid services on a very affordable basis for identification of plant materials. You can check with them on google for details.

From there you will get the exact report about the plant and its taxonomical identity. This certificate will be useful for you throughout your study as you will have to produce a documentary proof for the identity of your plant during publications as well as during compilation or final presentation of your work.

Based on the picture and my own field observations, I would vouch for Cyathea. However, check the frond at backside for the sori arrangement and if possible, provide a close up picture of the same which would aid in identification. Also you can refer to following database in case of any confusion:

http://rbg-web2.rbge.org.uk/thaiferns/

Botanical name: Dryopteris filixmas

Its a Fern. It contain filixcicin, an alkaloid. Is present.

Dryopteris filix-mas is completely wrong!

I also vote for Cyathea (a tree fern). A determination on species level requires more details not to be seen from the photo (sori arrangement, scales etc.). It is certainly not a Dryopteris

I would even say that this plant belongs to the genus Alsophila, or Cyathea subg. Alsophila sect. Alsophila, if you like. Apparently there are only two species known from that region, C. nilgirensis (petioles not spiny; axes of pinnae hairy below) and C. spinulosa (petioles spiny; axes glabrous below). It doesn't look like Gymnosphaera or Sphaeropteris.

This ferns is quite similar to Diplazium caudatum, typical from the laurel forests of Azores, Madeira and Canary Islands, but present also in Iberia. Naturally, it is not this species, but may be a relative of this genus. In any case, I do not exclude Cyathea genus, as pointed out other people. I think it is not certainly a Dryopteris species. But identification of a fern with a single photo and without details of sori is quite difficult, sometimes impossible!