1) Caryophylloid dicot genus 2) Genus sagina 
Sagina (like Colobanthus called `pearlworts`) is a genus of 20–30 species of flowering plants in the `Pink` or Carnation family Caryophyllaceae. These are flowering herbs native to temperate regions of the Northern Hemisphere extending south to tropical mountain areas at high altitudes, reaching just south of the equator in Africa. They are ...[genus] Padua points of family 4 and degree 5, with their generating curve. ...
[n] - small low-growing annual or perennial herbs of temperate and cool regions
genus Sagina noun small low-growing annual or perennial herbs of temperate and cool regions