parsing - * "The Japanese language does not have words that function as adjectives in a syntactic sense"

※ _{This (titular) assertion is questionable, so I'm (1) putting it in quotes, and (2) placing an asterisk in front of it.}

The following page starts with this assertion, which I had not heard before :

https://en.wikipedia.org/wiki/Japanese_equivalents_of_adjectives

The Japanese language does not have words that function as adjectives in a syntactic sense – that is to say that tree diagrams of Japanese sentences can be constructed without employing adjective phrases. [citation needed]

Nevertheless, there are words that function as adjectives in a semantic sense.

[citation needed] ! ! !

Is this a commonly heard notion?

For example :

• 立派で赤い花


• 背が高く赤い花が立派なこの植物の名前を教えてください。

It's not obvious how Parse Trees of these strings (above) would be any different from Parse Trees of English strings of similar meanings.

–- that is to say, a tree diagram (or a parse tree) of the latter Japanese string (the sentence) seems like it would be a great example to illustrate [adjective phrases] in Japanese.

This Jp wikipedia page doesn't have anything on it: Wikipedia 形容詞

Any ideas?