I have started accumulating a few oxalis plants, false shamrock with
green leaves and white flowers and the similar looking purple leafed
and pink flowered species. ........ Does anyone have a
recommendation of other species to get and places to order from?

Bluestone Perennials has some. I've been very happy with their
products and service.

http://www.bluestoneperennials.com/c...cgi/index.html

vince norris