http://ersatz-read.livejournal.com/ ([identity profile] ersatz-read.livejournal.com) wrote in [community profile] 1word1day2017-02-21 11:09 pm

Monday-ish word: adventive

adventive (ăd-vĕn′tĭv), adj.

Not native, and usually not yet well established; exotic (as in plants or animals).

Here is the wikipedia entry.
The alkali grass (Distichlis spicata) pictured below is an introduced adventive species here in Wisconsin, apparently only recorded in a handful of places in two counties.



Etymology:  Latin adventus, arrival.