Salvia divinorum (Diviner's Sage)
This large Salvia with attractive large pale-veined leaves is native to Mexico, where it has a long tradition of use by shamans for inducing visions (the hallucinogenic leaves are used for divination by the Mazatec in Oaxaca), produces stunningly beautiful white flowers with lavender bracts in early winter. It is not at all winter hardy, so you need a greenhouse if you want to see the flowers.
Zone 10, Shade, Moist, 4', white, winter, native to Mexico.
Photographed 12/14/2001 (in a greenhouse)