''Calyptridium pygmaeum'',

synonym A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are all ...

''Cistanthe pygmaea'', common name pygmy pussypaws, is a plant species

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

. It has been reported from

Riverside Riverside may refer to: Places Australia * Riverside, Tasmania, a suburb of Launceston, Tasmania Canada * Riverside (electoral district), in the Yukon * Riverside, Calgary, a neighbourhood in Alberta * Riverside, Manitoba, a former rural m ...

San Bernardino San Bernardino (; Spanish language, Spanish for Bernardino of Siena, "Saint Bernardino") is a city and county seat of San Bernardino County, California, United States. Located in the Inland Empire region of Southern California, the city had a ...

Inyo Inyo may refer to: Places California * Inyo County, California * Inyo National Forest, USA * The Inyo Mountains * The Mono–Inyo Craters Other uses * Japanese for yin and yang Yin and yang ( and ) is a Chinese philosophy, Chinese p ...

, Tulare and Fresno Counties, in

pine A pine is any conifer tree or shrub in the genus ''Pinus'' () of the family Pinaceae. ''Pinus'' is the sole genus in the subfamily Pinoideae. The World Flora Online created by the Royal Botanic Gardens, Kew and Missouri Botanical Garden accep ...

and

subalpine Montane ecosystems are found on the slopes of mountains. The alpine climate in these regions strongly affects the ecosystem because temperatures fall as elevation increases, causing the ecosystem to stratify. This stratification is a crucial f ...

forests at elevations of 1900–3550 m. ''Calyptridium pygmaeum'' is an annual herb. Stems are horizontal, spreading out in various directions from the

rootstock A rootstock is part of a plant, often an underground part, from which new above-ground growth can be produced. It could also be described as a stem with a well developed root system, to which a bud from another plant is grafted. It can refer to a ...

, each up to 8 cm long. Leaves are up to 15 mm long. Flowers form dense clusters at the ends of each of the branches. Sepals are egg-shaped and fleshy. The 4 petals are white, each up to 3 mm long, remaining attached to the fruit. Capsule is egg-shaped, about 5 mm across. Seeds are black, round and shiny.Flora of North America v 4 p 463, ''Cistanthe pygmaea''
/ref>Rydberg, Per Axel. 1932. North American Flora 21(4): 320.

References

{{Taxonbar, from=Q16961563 Montiaceae Flora of California Plants described in 1932 Taxa named by Samuel Bonsall Parish