Do Canadian citizens need a U.S. visa if travelling to the U.S. from the United Kingdom?

I am a Canadian citizen. I am traveling to the USA from the United Kingdom (I am on a working holiday visa for the U.K.). The British friends I am traveling with need to apply for an ESTA. I am aware that Canadians cannot apply for this, but will I need another visa to enter if I am traveling from the U.K.?
I have gone to this website http://www.esta.us/canada.html , and I am confused at what it says.
"Important Facts for Canadian citizens:
In most cases Canadian passport holders are not required to hold a U.S. visa to enter the United States directly from Canada. Canada is not a part of the Visa Waiver Program and Canadian passport holders do not need and cannot apply for ESTA."
The part where it says "directly from Canada" makes it very confusing, since I'll be traveling from the U.K.
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Do I need a visa for Canada and USA from UK?
Do UK Passport Holders Need a Visa to Go to Canada? UK passport holders must obtain an Electronic Travel Authorization (ETA) before traveling to Canada.Can Canadian citizens enter US without visa?
Canadians typically do not require visas to enter the United States, although there are some exceptions. Citizens of certain other countries also do not require entry visas to visit the United States. For more information, please visit the Visa Waiver section of the State Department website.Do I need a visa to enter USA from UK?
All travellersYou will need to get a visa or an Electronic System for Travel Authorisation (ESTA) visa waiver to enter or transit the USA as a visitor. You should consult the US State Department website to determine which you will need.Can I enter USA from Canada with UK passport?
What documentation will I need to enter the USA? All British Passport holders entering the USA on the visa waiver programme are required to hold a machine-readable passport. If do not hold a machine-readable passport you will need to obtain a visa for entry or apply for a new passport.I am a Canadian citizen Do I need a visa to travel to the United States?
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