Saxifraga oppositifolia ( Vaccarina Purple Mountain Saxifrage )
This is an Oppositifoliae ( a subsection of Porhpyrion , which is one of the 5 saxifrage part ) saxifrage with dense russet scab of fleshy , elliptic , deep green leaves , to 1/4 in long . After a couple years it create dark ruby - purplish , single , cup - shaped , 3/4 inch all-embracing flowers . This is an excellent plant life for a partially shady post in the rock garden in moist , well - enfeeble , hummus - rich , indifferent to alkaline filth ....