Petrorhagia Arabica
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''Petrorhagia'' is a small
genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of annual and
perennial plant A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also wide ...
s of the family
Caryophyllaceae Caryophyllaceae, commonly called the pink family or carnation family, is a family of flowering plants. It is included in the dicotyledon order Caryophyllales in the APG III system, alongside 33 other families, including Amaranthaceae, Cactacea ...
, mostly native to the
Mediterranean The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on the e ...
region. It is low-growing with wiry stems and narrow, grass-like leaves. The
flower A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Angiospermae). The biological function of a flower is to facilitate reproduction, usually by providing a mechani ...
s are small, in clusters similar to members of the genus '' Dianthus'', in
pink Pink is the color of a namesake flower that is a pale tint of red. It was first used as a color name in the late 17th century. According to surveys in Europe and the United States, pink is the color most often associated with charm, politeness, ...
,
lilac ''Syringa'' is a genus of 12 currently recognized species of flowering plant, flowering woody plants in the olive family or Oleaceae called lilacs. These lilacs are native to woodland and scrub from southeastern Europe to eastern Asia, and wid ...
, or
white White is the lightest color and is achromatic (having no hue). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully reflect and scatter all the visible wavelengths of light. White on ...
. ''
Petrorhagia saxifraga ''Petrorhagia saxifraga'', known as tunic flower or coat flower, is a small, herbaceous flowering plant in the family Caryophyllaceae. It is native to parts of Europe and introduced to the United States and Canada, Great Britain, and Sweden. ''Pe ...
'' is the tunic flower or coat flower, similar to
baby's breath ''Gypsophila'' () is a genus of flowering plants in the carnation family, Caryophyllaceae. They are native to Eurasia, Africa, Australia, and the Pacific Islands.introduced to other continents.


Species

,
Kew Kew () is a district in the London Borough of Richmond upon Thames. Its population at the 2011 census was 11,436. Kew is the location of the Royal Botanic Gardens ("Kew Gardens"), now a World Heritage Site, which includes Kew Palace. Kew is a ...
's
Plants of the World Online Plants of the World Online (POWO) is an online database published by the Royal Botanic Gardens, Kew. It was launched in March 2017 with the ultimate aim being "to enable users to access information on all the world's known seed-bearing plants by ...
lists 28 accepted species of ''Petrorhagia'':


References


External links


Jepson Manual Treatment

USDA Plants Profile: ''Petrorhagia'' in North America

Flora of North America
Caryophyllaceae Caryophyllaceae genera {{Caryophyllaceae-stub