My husband gets a lot of loose teas via
Igourmet.com, which has a nice selection and delivers promptly. I'm really stuck on the Tazo version of decaf chai, so I haven't sampled as many as he has. Even so, we're both very into teas and have read up on 'em.
A lot of the fruit-and-flower teas, surprisingly, are just
Camellia sinensis--with added flavorings.
That applies to jasmine tea, Earl Grey, most citrus teas, peach, lemon, cinnamon, orange--the majority are tea with other tasty things mixed in. It's usually flavored black tea, but some flavors are mixed with green or white tea.
Black, green, white, and oolong teas are all the same species of plant (
C. sinensis) that undergoes different types of processing to become tea. I'm not 100% sure of this, but I think that white tea is steamed, green tea dried, oolong tea partially fermented, and black tea fully fermented. It's the most common type; standard iced teas, Lipton/Luzianne/Bigelow teas, and breakfast teas are all black teas.
Herbal teas, on the other hand, are technically "tisanes," not teas (though you'll never see that written on the box). It gets confusing, because a lot of stuff that looks like herbal tea--I'm looking at another page featuring Teavana's "shape up tea blend," for instance--contains black tea along with the herbs/spices. I guess the only way to avoid black/green/white tea in herbal teas is to buy from somewhere that separates teas by type.
Chamomile tea is almost always just an herbal tea; maybe it tastes gross with black/green tea, maybe it just seems silly to combine something to calm you down with something containing caffeine. I dunno.
Rooibos is another popular base for herbal teas; it has a really rich, round flavor that goes well with black tea or with fruits, herbs, or spices.
I would love to try that sweet, cold perfume tea you're describing! It sounds like a little cup of fragrant heaven.