Boxthorn - Goji - different types

[Olorin2001]

Two different seed supplier, each sent dried red berries, but the plants that grew from the seed were different as can be seen in the picture, these are two cuttings taken at the same time and grown in same compost, plug trays side by side in greenhouse.
They both produce red berries that look and taste the same
Seems there are dozens of species of boxthorn, none from Tibet or the Himalayas.
Is only one of them Goji?
Or are they all Goji?

[FB.]

If you grow two plants from seed, there's a good chance that they won't be exactly the same - just as two brothers rarely look exactly the same.

The reason why many plants are produced from cuttings or grafting is to ensure they remain true-to-type.

Having said that, only the one on the left of your picture (with the shorter leaves) looks most like the goji plants that I've seen (but don't throw the other one away because there might be more than one type).

Is it possible that one of the plants was an imposter - perhaps a seed from a weed or some other plant which happened to get into the compost and germinate at about the same time as the goji seed?

[Olorin2001]

The seeds from one suppier grew into the plants like the one on the left, from the other supplier they all grew into plants like on the right. Both groups of plants produce red, Goji like, berries, their flowers are virtually identical, and their growth rate and habit are the same. the plants in picture are rooted cuttings, one from each group. It was easier than trying to photograph the mature plants side by side, and you can see the differences clear with the cuttings.