A group of botannists travel to the wilderness and die because of a rare mutation of pollen

Movies
1

Set in the early 20th Century. Indie film. Low budget, but well performed. The title, I believe, is one word, and may be Latin. Imagine a ‘Journey to the Arctic goes horribly wrong’ plot, but in the woods. Probably Canadian. Released within the past ten years or thereabouts.
Thanks!

2

Is it Flora?