Lexitechnia

Pliny, Naturalis Historia 21.54:

Tribulo proprietas, quod et fructum spinosum habet.

The caltrop has the distinctive property that it even has a spiny fruit.

There are a few plants called tribulus ‘caltrop’, in both English and Latin.  The one that today has Tribulus as its scientific name, the puncturevine, is probably not the one being referred to, as it does not have the thorny-based leaves Pliny mentions the plant as having a couple of sentences prior.

I might better render the second half as ‘…even its fruit is spiny,’ though I’m not sure it fits as well.

[For proprietas.]