Arisaema costatum (Wall.) Mart., Flora 14(2): 459 1831. (syn: Arisaema costatum (Wall.) Mart. ex Schott & Endl.; Arum costatum Wall.);
C. & E. Nepal to S. Tibet as per WCSP;


Arisaema costatum (Wall.) Mart. (accepted name) ??? : 6 posts by 3 authors. Attachments (6)

Location: Charikot, Nepal 
Date: 23 July 2014
Altitude: 6600 ft.

Wonderful images, …  I don’t know if it is available in efi or not. Pl. check.

Also check with images at Arisaema speciosum (Wall.) Mart. 

This could be Arisaema costatum

Arisaema costatum (Wall.) Mart. : 9 posts by 3 authors. 4 images- 6 to 7 mb each.
Location: Latha Bhanjyang, Phulchoki, Lalitpur, Nepal
Date: 20 June  2020
Altitude: 2128 m.
Habitat : Wild

Looks different from Arisaema costatum
Pl. check Arisaema propinquum

The impressed leaf veins, the density of the veins and the lack of reticulation in the spathe all show this to be costatum. The altitude also indicates costatum, I assume this was photographed on Flower Hill?

I feel it is more close to Arisaema costatum (Wall.) Mart. comparing 2 images.


For me there is no doubt it is costatum, it is easily recognisable. Even if it does not flower you can look at the leaves and you will see that the underside of the leaves of costatum has raised veins, see picture. I have seen costatum both north (Melamchigaon) and south of Kathmandu.


Arisaema costatum (Wall.) Mart.: 5 high res. images.

Location: Phulchoki, Kathmandu
Date:  08 July 2023
Elevation:  1957 m.
Habit : Wild

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