Alsophila gigantea Wall. ex Hook., Sp. Fil. 1: 53 1844. (syn: Alsophila balakrishnanii (Dixit & Tripathi) Dixit; Alsophila helferiana Presl; Alsophila polycampta Kunze; Alsophila rheosora Christ; Alsophila umbrosa Wall. ex Ridl.; Cyathea balakrishnanii R. D. Dixit & A.K.Tripathi; Cyathea gigantea (Wall. ex Hook.) Holtt.; Cyathea pectinata Ching & S. H. Wu; Cyathea petiolulata Ching & S. H. Wu; Cyathea pseudogigantea Ching & S. H. Wu; Cyathea tinganensis Ching & S. H. Wu; Dichorexia gigantea (Wall. ex Hook.) Presl; Gymnosphaera gigantea (Wall. ex Hook.) J. Sm.; Polypodium giganteum Wall.; Polypodium umbrosum Wall.); 
China (Guangdong, Guangxi, Hainan, Yunnan), Sri Lanka, C-Sumatra, W-Java,
peninsular Malaysia (Langkawi Isl., Penang, Perak), India (Andhra Pradesh,
Arunachal Pradesh, Assam State, Chhatishgarh, Jharkhand, Karnataka, Kerala,
Madhya Pradesh, Maharashtra, Manipur, Meghalaya, Mizoram, Nagaland, Odisha,
Sikkim, Tamil Nadu, Tripura, West Bengal), Nepal, Myanmar [Burma],
Thailand
(widespread), Cambodia, Laos, Vietnam,
Bangladesh, Andaman Isl., Bhutan as per Catalogue of Life;
  
 

 

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Alsophila sp. from Kamrup district, Assam:

Attached images are Alsophila sp. (Cyathea sp.). Please confirm the ID.

Date : 21.12.2012

Location: Kamrup district

Family : Cyatheaceae

Genus & species : Alsophila sp. (Cyathea sp.).

Habitat: Grows wild on hilly area


Cyathea gigantea


  

 

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Bhagamandala – Thalacauvery Road Karnataka
Date: 22 FEB 2017 … Altitude range: ~ 907 – 1122 m (2976 – 3683 ft) asl
Large fern 
Dear friends,
Not wanting to ask for species ID!
Will be glad to get some kind of ID to “any broader level” to replace the too common “fern” in my notes. 😊  


Well since our dear old-timer, Linnaeus, reduced sentences to a binomial I can but follow him and inform you that this is Cyathea gigantea (or if you prefer to split genera, Alsophila gigantea), a common tree-fern throughout most of India. Perhaps unfortunately named as though it can develop a good tall trunk in very luxuriant and long-undisturbed conditions, it is probably more commonly not so tall, certainly not as tall as other full-grown species.

     The sori are usually in an attractive “inverted V” series underneath the pinnules and are exindusiate.  The stipes are darkish brown and bear many lanceolate brown scales with very narrow apices.
     The generally smaller and slightly less developed plants of peninsular India were named C. balakrishnanii by the late Dr. Dixit, and this is such a plant, but C. gigantea varies a bit wherever you get it, and alas, C. balakrishnanii must go the way of all good synonyms which were incompletely reseached.
    So, NOT for identification – but drat, sorry, I did so anyway!!


Thank you very much …, and many many thanks to …!! 

Well, I was least expecting to get species ID of a fern, of which I have not captured any relevant aspects – I do not even know them!


 

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