flowering plant
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...
s in the family
Asteraceae
The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...
. It contains species formerly included in ''
Aster
Aster or ASTER may refer to:
Biology
* ''Aster'' (genus), a genus of flowering plants
** List of ''Aster'' synonyms, other genera formerly included in ''Aster'' and still called asters in English
* Aster (cell biology), a cellular structure shap ...
'' but now considered to be a distinct genus. They are known commonly as tall flat-topped asters''Doellingeria''. Flora of North America. or whitetops.''Doellingeria''. Integrated Taxonomic Information System (ITIS).
There is still some disagreement as to which species should be included in ''Doellingeria.'' Some authorities include up to 10 or 11 species in ''Doellingeria'', but
phylogenetic analyses
In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups o ...
suggest that any Asian plants in the genus should be classified in ''Aster'', making ''Doellengeria'' an
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 else ...
North American
North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Ca ...
genus. A fourth is now treated as ''
Oclemena reticulata
''Oclemena'' is a small genus of North American flowering plants in the tribe Astereae within the family Asteraceae.
It is native to northeastern North America, found in wet or dry woodlands, and sometimes in clearings in the woods, or in acid b ...
''.
''Doellingeria'' as it is now defined is a genus of
perennial
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 wid ...
herbs growing from rhizomes or woody bases. The unbranched stems grow erect and the tallest can reach in height. The alternately arranged leaves have smooth edges and are sometimes woolly or rough-haired. The flower heads are a few millimeters long and contain 2 to 10 white
ray florets
The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...
, sometimes more. The
disc floret
The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...
s are light yellow and the lobes at the tips may spread or curl. The fruit is a cypsela with a pappus of three rings of white or tan
bristles
A bristle is a stiff hair or feather (natural or artificial), either on an animal, such as a pig, a plant, or on a tool such as a brush or broom.
Synthetic types
Synthetic materials such as nylon are also used to make bristles in items such as br ...
Doellingeria dimorphophylla
''Doellingeria'' is a genus of flowering plants in the family Asteraceae. It contains species formerly included in '' Aster'' but now considered to be a distinct genus. They are known commonly as tall flat-topped astersJapan
* ''
Doellingeria infirma
''Doellingeria infirma'', the cornel-leaf whitetop or cornel-leaved aster, is a perennial forb native to the eastern United States, USDA, NRCS. 2014. The PLANTS Database (http://plants.usda.gov). National Plant Data Team, Greensboro, NC 27401-490 ...
Doellingeria komonoensis
''Doellingeria'' is a genus of flowering plants in the family Asteraceae. It contains species formerly included in '' Aster'' but now considered to be a distinct genus. They are known commonly as tall flat-topped astersJapan
* ''
Doellingeria longipetiolata
''Doellingeria'' is a genus of flowering plants in the family Asteraceae. It contains species formerly included in '' Aster'' but now considered to be a distinct genus. They are known commonly as tall flat-topped astersSichuan
Sichuan (; zh, c=, labels=no, ; zh, p=Sìchuān; alternatively romanized as Szechuan or Szechwan; formerly also referred to as "West China" or "Western China" by Protestant missions) is a province in Southwest China occupying most of the ...
Doellingeria rugulosa
''Doellingeria'' is a genus of flowering plants in the family Asteraceae. It contains species formerly included in '' Aster'' but now considered to be a distinct genus. They are known commonly as tall flat-topped astersJapan
* ''
Doellingeria scabra
''Doellingeria scabra'' is a perennial herb of the family Asteraceae from Eurasia. It is frequently found in wild mountain regions of Korea, eastern Russia, China, and Japan.
Distribution
''Doellingeria scabra'' is native to Eurasia. It is act ...
Korea
Korea ( ko, 한국, or , ) is a peninsular region in East Asia. Since 1945, it has been divided at or near the 38th parallel, with North Korea (Democratic People's Republic of Korea) comprising its northern half and South Korea (Republic o ...
,
Russia
Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-eig ...
Amur Oblast
Amur Oblast ( rus, Аму́рская о́бласть, r=Amurskaya oblast, p=ɐˈmurskəjə ˈobləsʲtʲ) is a federal subject of Russia (an oblast), located on the banks of the Amur and Zeya Rivers in the Russian Far East. The administrat ...
Primorye
Primorsky Krai (russian: Приморский край, r=Primorsky kray, p=prʲɪˈmorskʲɪj kraj), informally known as Primorye (, ), is a federal subject (a krai) of Russia, located in the Far East region of the country and is a part of t ...
Texas
Texas (, ; Spanish: ''Texas'', ''Tejas'') is a state in the South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2020, it is the second-largest U.S. state by ...
to
Maryland
Maryland ( ) is a state in the Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean to ...
New Jersey
New Jersey is a state in the Mid-Atlantic and Northeastern regions of the United States. It is bordered on the north and east by the state of New York; on the east, southeast, and south by the Atlantic Ocean; on the west by the Delaware ...
Doellingeria umbellata
''Doellingeria umbellata'', known by the common names tall flat-topped white aster, parasol whitetop, or tall white-aster, is a North American plant species in the family Asteraceae. It is native to Canada (from Alberta to Newfoundland), St. Pier ...
'' (Mill.) Nees - USA (
Florida
Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...
to
Maine
Maine () is a state in the New England and Northeastern regions of the United States. It borders New Hampshire to the west, the Gulf of Maine to the southeast, and the Canadian provinces of New Brunswick and Quebec to the northeast and ...
+
North Dakota
North Dakota () is a U.S. state in the Upper Midwest, named after the indigenous Dakota Sioux. North Dakota is bordered by the Canadian provinces of Saskatchewan and Manitoba to the north and by the U.S. states of Minnesota to the east, So ...
);
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...
(
Alberta
Alberta ( ) is one of the thirteen provinces and territories of Canada. It is part of Western Canada and is one of the three prairie provinces. Alberta is bordered by British Columbia to the west, Saskatchewan to the east, the Northwest Ter ...