Forvekslingsarten kan vokse på samme voksested.

Because Norwegian normally writes compound nouns as a single word.

Here, forvekslingsarten is built from:

• forveksling = confusion / mix-up
• art = species
• -en = the definite ending the

So the core noun is forvekslingsart, meaning something like a species that can be confused with another species or a look-alike species, and forvekslingsarten means the look-alike species.

This is very typical in Norwegian. Where English often uses several words, Norwegian often packs them into one compound noun.

That -s- is a linking sound often used in Norwegian compounds.

So:

• forveksling
  • art
    becomes
• forvekslingsart

It does not usually add a separate meaning by itself. It mainly helps the compound sound natural and fit Norwegian word-building patterns.

You will see this a lot in compound nouns.

Because -en is the definite ending, so forvekslingsarten means the look-alike species.

Compare:

• en forvekslingsart = a look-alike species
• forvekslingsarten = the look-alike species

In Norwegian, definiteness is often marked by adding an ending to the noun, instead of using a separate word like English the.

Because after modal verbs like kan, Norwegian uses the infinitive without å.

So:

• kan vokse = can grow
• må vokse = must grow
• vil vokse = will / wants to grow
• skal vokse = will / shall grow

This is similar to English, where we say can grow, not can to grow.

Here it most naturally expresses possibility.

So in a sentence like this, especially in a scientific or descriptive context, kan vokse usually means:

• can grow
• may grow
• is able to grow
• is found growing

It does not mean permission. No one is giving the species permission to grow.

Because it comes after the modal verb kan.

In Norwegian, a modal verb is followed by the bare infinitive:

• kan vokse
• kan finnes
• kan være

If you used vokser, that would be a finite present-tense verb:

• arten vokser = the species grows / is growing

But after kan, you need vokse.

Voksested is another compound noun:

• vokse = to grow
• sted = place

So voksested literally means growing place, but in natural English it often means something like:

• habitat
• site
• location where it grows

In biological writing, this kind of compound is very common and often sounds a bit technical or descriptive.

Because samme is often used with a noun in the indefinite form:

• samme dag
• samme sted
• samme problem
• samme voksested

So på samme voksested is completely normal.

If you say på det samme voksestedet, that sounds more specifically definite, more like at that exact same growing site. The version in your sentence is slightly more neutral and compact.

Because på is a common preposition for talking about a site, spot, or locality.

So på samme voksested is like saying:

• at the same site
• in the same habitat/location

Even though English might often use in, Norwegian very often uses på with words for places, sites, surfaces, institutions, and locations in ways that do not match English exactly.

So this is something you usually learn as part of the expression:

• vokse på et sted
• finnes på et voksested

Samme means same and functions as a determiner/adjective before the noun.

In this sentence:

• samme voksested = the same growing site / the same habitat

A useful thing to remember is that samme often appears directly before a noun without the noun becoming definite:

• samme hus
• samme person
• samme art
• samme voksested

That is different from many other adjectives in Norwegian, where definite nouns usually need extra marking.

Yes, but it is also fairly straightforward.

The structure is:

• Forvekslingsarten = subject
• kan = finite verb
• vokse = infinitive
• på samme voksested = prepositional phrase

So the sentence follows normal Norwegian main-clause word order:

subject + verb + rest

That makes it a good example of a basic declarative sentence in Bokmål.