www.alphadictionary.com

Dictionary: originating or occurring naturally in a particular place.
What is the difference to "native"?

Of course, ‘native’ is used in many other senses. But in the way we’re talking about, here is the OED:

Native:
Born in a designated place; belonging to a particular people by birth; spec. belonging to an indigenous ethnic group, as distinguished from foreigners, esp. European colonists.

Indigenous:
Born or originating in a particular place; spec. (now often with capital initial) designating a people or group inhabiting a place before the arrival of (European) settlers or colonizers. Also with to introducing the place in question.

Synonyms, I’d say, although wiser heads might discern a distinction.

The difference is in how one uses them, and in capitalization. Having been born there, I may be able to say I'm a native American; but, not being of an indigenous group, I can't say I'm a Native American.

Plants and animals are called native to an area, never, or very seldom, indigenous.

Don’t know about frequency of use, but the OED gives virtually the same definition for “plants, animals, natural products, etc.: originating in or belonging to a particular country or region; of native origin, production, or growth; not introduced from elsewhere.”
And that usage is not noted as archaic, obsolete, or rare.

That was meant to be read as 'indigenous' is seldom or rarely used. 'Native' is the usual term. Sorry for the confusion.

I guess you’re right. ‘Indigenous’ is more ‘reading vocabulary’ than ‘speaking vocabulary’. The OED does rate them equally in ‘Frequency (in current use)’.
All the best in the new year.