Pontederia cordata L. (Cultivated)

(Alabama; Argentina Northeast; Argentina Northwest; Arkansas; Belize; Bolivia; Brazil North; Brazil Northeast; Brazil South; Brazil Southeast; Brazil West-Central; Colombia; Connecticut; Cuba; Czechoslovakia; Delaware; District of Columbia; Florida; Georgia; Honduras; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Masachusettes; Mexico Gulf; Mexico Southwest; Michigan; Minnesota; Mississippi; Missouri; Nebraska; New Brunswick; New Hampshire; New Jersey; New South Wales; New York; North Carolina; Nova Scotia; Ohio; Oklahoma; Ontario; Paraguay; Pennsylvania; Prince Edward I.; Qubec; Rhode I.; South Carolina; South Dakota; Tennessee; Texas; Uruguay; Venezuela; Vermont; Victoria; West Virginia; Wisconsin as per Catalogue of Life)

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(Alabama; Andaman Is.; Argentina Northeast; Argentina Northwest; Arizona; Aruba; Assam; Azores; Bahamas; Bangladesh; Belize; Benin; Bermuda; Bolivia; Borneo; Brazil North; Brazil Northeast; Brazil South; Brazil Southeast; Brazil West-Central; Burkina; California; Cambodia; Cape Provinces; Cayman Is.; Central African Repu; Chile Central; China North-Central; China South-Central; China Southeast; Colombia; Congo; Cook Is.; Costa Rica; Cuba; Czechoslovakia; Dominican Republic; East Himalaya; Ecuador; Egypt; El Salvador; Fiji; Florida; Free State; French Guiana; Gambia; Georgia; Guatemala; Guyana; Hainan; Haiti; Hawaii; Honduras; Illinois; India; Italy; Jamaica; Japan; Jawa; Kenya; Korea; KwaZulu-Natal; Leeward Is.; Louisiana; Madagascar; Malawi; Malaya; Mauritius; Mexico Central; Mexico Gulf; Mexico Northeast; Mexico Northwest; Mexico Southeast; Mexico Southwest; Mississippi; Mozambique; Nauru; Nepal; Netherlands Antilles; New Caledonia; New South Wales; Nicaragua; Norfolk Is.; North Carolina; Northern Provinces; Northern Territory; Panam; Paraguay; Peru; Philippines; Portugal; Puerto Rico; Queensland; Rodrigues; Runion; Society Is.; South Australia; South Carolina; Spain; Sri Lanka; Sudan; Sumatera; Suriname; Taiwan; Tanzania; Texas; Thailand; Trinidad-Tobago; Uruguay; Venezuela; Victoria; Vietnam; Virginia; Western Australia; Windward Is.; Zambia; Zare; Zimbabwe as per Catalogue of Life)

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Pontederia hastata L. (Assam, Bangladesh, Borneo, Cambodia, China South-Central, China Southeast, East Himalaya, Fiji; Hainan, India, Jawa, Laos, Malaya, Myanmar, Nepal, New Guinea, Northern Territory, Philippines, Sri Lanka, Sulawesi, Sumatera, Thailand, Vietnam as per POWO)
(Keys as per Flora of China and FoC illustration;
As per efi thread: The leaves are 15-20 cm long, hastate; the flowers are on long pedicels. In M. vaginalis the leaves are 10 cm, ovate-cordate and flowers are sub-spicate. Besides flowers, perianth segments of withered flowers are seen twisted around the fruit in a cork screw manner. This is another character of M. hastata compared to M. vaginalis)
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Pontederia vaginalis Burm.f. (Native to: Afghanistan, Andaman Is., Assam, Bangladesh, Borneo, Cambodia, China North-Central, China South-Central, China Southeast, East Himalaya, Hainan, India, Japan, Jawa, Korea, Laos, Lesser Sunda Is., Malaya, Maluku, Myanmar, Nansei-shoto, Nepal, New Guinea, Northern Territory, Pakistan, Philippines, Primorye, Queensland, Sulawesi, Sumatera, Thailand, Vietnam, Western Australia; Introduced into: California, Fiji, Hawaii as per POWO)

As per efi thread: The leaves are 15-20 cm long, hastate; the flowers are on long pedicels. In M. vaginalis the leaves are 10 cm, ovate-cordate and flowers are sub-spicate. Besides flowers, perianth segments of withered flowers are seen twisted around the fruit in a cork screw manner. This is another character of M. hastata compared to M. vaginalis)

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Eichhornia crassipes syn. of Pontederia crassipes Mart. 


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Species with description & keys from Flora of Pakistan (Distribution):

Eichhornia crassipes (Mart.) Solma in DC. (Native of Brazil, introduced and naturalised in many tropical countries)- syn. of Pontederia crassipes Mart. 


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Species with distribution in annotated checklist of Flowering plants of Nepal (Distribution):

Eichhornia crassipes (Mart.) Solms, in A. DC. (200-1500 m; S. America, naturalised widely in Asiatic Tropics)- syn. of Pontederia crassipes Mart. 


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Species with description & keys in Flora of China (Distribution other than China):

Eichhornia crassipes (Martius) Solms in A. de Candolle & C. de Candolle [native to Brazil; widely introduced and naturalized in tropics and subtropics].- syn. of Pontederia crassipes Mart. 


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Species as per Flora of Peninsular India:
Monochoria hastata syn. of Pontederia hastata L.
Monochoria vaginalis syn. of Pontederia vaginalis Burm.f. 


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Species with description & keys from Flora of Pakistan (Distribution):

Monochoria vaginalis (Burm. f.) Presl (SE Asia to China, Japan and throughout Malaysia)- syn. of Pontederia vaginalis Burm.f. 


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Species with distribution in annotated checklist of Flowering plants of Nepal (Distribution):

Monochoria hastata (L.) Solms, in A. DC. (150 m; Tropical and subtropical Asia)- syn. of Pontederia hastata L. 

Monochoria vaginalis (Burm. f.) C. Presl (200-1800 m; Himalaya (Nepal, Bhutan), India east to China & Japan, Malaysia)- syn. of Pontederia vaginalis Burm.f. 


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Some species found in India with description & keys from Flora of China [Distribution other than China]:

Monochoria hastata (Linnaeus) Solms in A. de Candolle & C. de Candolle [Bhutan, Cambodia, India, Indonesia, Malaysia, Myanmar, Nepal, Sri Lanka, Vietnam].- syn. of Pontederia hastata L.
Monochoria vaginalis (N. L. Burman) C. Presl ex Kunth [Bhutan, Cambodia, India, Indonesia, Japan, Korea, Laos, Malaysia, Myanmar, Nepal, Pakistan, Philippines, Russia (Siberia), Sri Lanka, Thailand, Vietnam; Africa, Australia].- syn. of Pontederia vaginalis Burm.f.