Colocasia fallax Schott, Bonplandia (Hannover) 7: 28 1859 (syn: Colocasia heterochroma H.Li & Z.X.Wei; Colocasia kerrii Gagnep.; Colocasia tibetensis J.T.Yin; Colocasia yunnanensis C.L.Long & X.Z.Cai); . Uttarakhand to China (Yunnan) and Indo-China: Assam, Bangladesh, China South-Central, East Himalaya, India, Myanmar, Nepal, Thailand, Tibet, Vietnam, West Himalaya as per POWO; .      Wild Alocasia sp. 1 (?) from Kamrup district, Assam: Attached images are Wild Alocasia sp.(?) growing on hilly area near stream. Please ID for it. Date : 21.12.2012 Location: Kamrup district, Assam Family : Araceae Genus & species : Alocasia Sp. (?) Habitat: Grows wild on hill near stream Habit :Herb Flower : Not seen Fruits :not seen To me, it is a kind of Colocasia. Although the middle of the leaves are whitish, I think it is Colocasia esculenta. Almost certainly Colocasia affinis Schott, but as with the Alocasia would need to see an inflorescence (and of course the fertile portions of the spadix), to be certain. To me, this looks somewhat like Colocasia fallax in its relatively low- and close-clumping growth habit, and the light blush along the main vein on the upper side of the blade. But the blade colour is a lighter green, and the front lobe of the blade is more elongate, than what I have seen previously in Colocasia fallax. We can be certain this is Colocasia sp., but as …, says, we need to see the inflorescence to reach any conclusion about species-level identification. Thank You very much Sir for ID. The particular species is not in flowering stage now. When flowering begin I will take and send the images of the spadix to you. That looks very much like Colocasia fallax, which is common in Meghalaya. It seems to show considerable variation in the blush on the blade and the presence or absence of dark coloured patches on the blades (even within one population), though fully green blades seem to be the most common. .
MS, April, 2014/03 Colocasia sp. for id.: 1 image. Location : Lengpui, Mizoram Habit : Herb Habitat : Wild Colocasia fallax ? Yes, may be Colocasia fallax as per discussions at Wild Alocasia sp. 1 (?) from Kamrup district, Assam This is clearly C. fallax in my view. The blade has a generally dark hue, and mostly rounded outline with distinct sinus.  Date : 04-01-2014 Habit : Herb Habitat : Wild I am confused between Colocasia affinis and Colocasia fallax  It is confusing! . Colocasia fallax in FOI: 7 very high res. images. I have doubts about images of Colocasia fallax in FOI. It may be Colocasia esculenta (L.) Schott as per images and details herein. I have been looking at it. It is a known plant in Manipur, and is locally known to be different from Colocasia esculenta. Its botanical identity, however, is to be clearly settled. I think more close to images at Xanthosoma sagittifolium No …, look at the sinus of the leaves. .        SK 3990 05 July 2024: Location: Kafaldanda, Nuwakot, Nepal Date: 14 June 2024 Altitude: 947m. Habitat : Wild Colocasia esculenta (L.) Schott ?? This is not Colocasia esculenta… it may be close to C. fallax, but with some differences (blade shape is certainly different). It is not C. affinis either. Please see attached article. Thanks for the great photos! 1 attachment. You have already ruled out C. affinis, but close up images of male flowers and leaf venetian look closer to it. Any further opinion ?  1 high res. image I’m definitely leaning to Colocasia fallax here. The oblong stigma and overall inflorescence structure point to this. In your photo the stigmas appear to be at peak receptivity, so rather swollen compared to the very sketchy sketch of an oblong stigma in the paper’s figure. I have not seen brown stigmas like this before, and have not seen mature inflorescences on C. fallax, so don’t know if this is typical or not. Your photos show a partially buried plant and the inflorescence emerging from sand. I suppose this is just a chance result of erosion in a gully or along a stream bank, not a peculiar subterranean habitat! The stolons of C. fallax have a remarkably strong inner fibrous core, and are a little like the cables used to hang suspension bridges… I suppose this is part of it’s adaptation to rocky stream courses and gullies with high-energy seasonal water flow. . References: |
Colocasia fallax
Updated on June 27, 2025