Well, first, lotus tea is a green tea, though one from Vietnam. It looks like Amazon has multiple versions of it, most with Amazon Prime shipping, so that should be easy.
Chrysanthemum tea is a tisane (herbal tea) that is quite popular in China. One of my preferred vendors, TeaSpring.com has
5 Types of Chrysanthemum tea. They're certainly a reliable resource, but won't be something you can get in the next couple of days. But there are also versions available from Amazon, so that might well be the easiest.
Meanwhile, just finishing up a mug of
Peet's Pride of the Port tea.