Azolla pinnata subsp. asiatica R.M.K.Saunders & K.Fowler (Syn: Azolla imbricata (Roxb. ex Griff.) Nakai; Azolla imbricata var. prolifera Y.X.Lin; Azolla imbricata var. sempervirens Y.X.Lin; Azolla pinnata var. imbricata (Roxb. ex Griff.) Bonap.) ?;    
Peninsular Malaysia, Sumatra, Java, Borneo, Sulawesi, Lesser Sunda Isl. (Lombok,
Bali, Alor), Moluccas, Philippines, New Guinea, Thailand, Vietnam, Bhutan,
Bangladesh, Myanmar [Burma], India (throughout, Darjeeling, Assam, Uttarakhand),
Jammu & Kashmir, Sri Lanka, Nepal, Pakistan, Taiwan, Japan, South Korea,
Ryukyu Isl., China (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hebei, Henan,
Hubei, Hunan, Jiangsu, Jiangxi, Liaoning, Shandong, Shanxi, Sichuan, Yunnan,
Zhejiang), ?South Africa (?KwaZulu-Natal)
as per Catalogue of Life;

 

 

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TMC Biodiversity Park  Thane

Date: April 15, 2018 … Altitude: about 15 m (50 feet) asl

Please help me with the ID of this floating carpet; it was too far in the middle of pond – could not get close up pictures.

Mosquito Fern. Azolla pinnata.

Thanks, …, for id.

That’s Azolla pinnata subsp. asiatica (syn.: A. imbricata).  Incidentally, as I’ve seen both species grow together in one or two localities (including Kolkata) it would be interesting, if rather challenging, to try to look for a prove hybrids.  Though being from quite different sections in the genus that might not occur. 

 

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