Misc: On This Day In January 1928 - The Soviet Union ordered the exile of Leon______ .?

Questions

Genus of plants with more than 150 species, most native to South Africa?

Genus of tropical American flowering annual herbs?

Geological fault zone in California stretching northwest for about 1000 km (about 600 mi), from the Imperial Valley in Southern California to Point Arena on the northern coast & out to sea?

George Kresge Jr.'s spectacular stage name (3 wds)?

Give me the matematical constant pi with 15 decimals?