Fancy A Cup 'o Tea?

Now I don't know about you folks but I'm a lover of tea and I love 'em all. Black tea, green tea, white tea, chamomile, herbal, you name it.

Now imagine this. Here you are camping out in the wild, the sun is setting and you'd like nothing more than a hot cup of tea to warm you up. You search through your rucksack over and over but darn it, it looks like you forgot the teabags back at civilization. Dagnabbit you're determined to have some tea and tea you shall have!

What wild flowers, fruits, and roots can you find that you know will give you the cup you're looking for?

Personally, in hikes around my area I've found bushes of rose hip, lemon balm, elder flower, mint, and valerian. All have made for wonderful natural, herbal teas.