Calyptridium quadripetalum

Calyptridium quadripetalum, synonym Cistanthe quadripetala, is a species of flowering plant in the family Montiaceae.^[1] It is known by the common name four-petalled pussypaws.^{[citation needed]} It is endemic to the North Coast Ranges of California, where it is an uncommon member of the serpentine soils flora on the slopes. It is a small annual plant spreading or erect stems each a few centimeters long. There is a basal rosette of small, thick leaves and a few along the stems. The inflorescence is a dense cluster of sepals and four white to pink round petals.^{[citation needed]}

Calyptridium quadripetalum
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Order:	Caryophyllales
Family:	Montiaceae
Genus:	Calyptridium
Species:	C. quadripetalum
Binomial name
Calyptridium quadripetalum S.Watson[1]
Synonyms[1]
Cistanthe quadripetala (S.Watson) Hershk.