1) Breakstone 2) Herb 3) Herbaceous plant 4) Saxifrage 1) Breakstone 2) Saxifrage 
(Saxifraga) Saxifraga is a large group of hardy perennial plants. Only a few are annuals or biennials. They are mostly natives of North and South Temperate and Arctic regions. A few are found in Asia and they are rare in South America. The name is an old Latin name derived from saxum, a rock and frangor, to break; the plant was though...