Genus of flowering plants in the family Asteraceae
Microseris
Microseris sylvatica
Scientific classification
Kingdom:
Plantae
Clade:
Tracheophytes
Clade:
Angiosperms
Clade:
Eudicots
Clade:
Asterids
Order:
Asterales
Family:
Asteraceae
Subfamily:
Cichorioideae
Tribe:
Cichorieae
Subtribe:
Microseridinae
Genus:
Microseris D.Don
Synonyms[1]
Apargidium Torr. & A.Gray
Bellardia Colla
Calais DC.
Fichtea Sch.Bip.
Galasia Sch.Bip.
Lepidonema Fisch. & C.A.Mey.
Nothocalais (A.Gray) Greene
Phyllopappus Walp.
Ptilocalais Greene
Ptilophora A.Gray
Scorzonella Nutt.
Stebbinsoseris K.L.Chambers
Uropappus Nutt.
Microseris is a genus of plants in the tribe Cichorieae within the family Asteraceae, plants that often called composites.[2] They are native to North America, South America, Australia, and New Zealand.[1]
Plants in the genus can either be annuals or perennials. Perennial plants in Microseris usually have a taproot or a caudex with the exception of Microseris borealis, which is rhizomatous. The leaves are mostly or entirely basal, growing very near the surface of the soil rather than being held on stems above ground level. When blooming the flowers are alone on the top of stems and are held upright when blooming and when producing seeds. The flowers are shades of orange or yellow with a superficial resemblance to dandelions.[3][4]
There is currently disagreement about which species should be placed in Microseris. Plants of the World Online (POWO) synonymizes genus Nothocalais into Microseris. While the USDA Natural Resources Conservation Service PLANTS database (PLANTS),[5] World Flora Online (WFO),[6] the Global Compositae Database (GCD),[7] and Flora of North America (FNA)[4] continue to list Nothocalais as a separate genus as of 2023.
The only species classified by WFO in Nothocalais is Microseris nigrescens as Nothocalais nigrescens, which is also the classification in PLANTS and FNA. The other species classified by PLANTS and FNA as Nothocalais are Microseris alpestris (N. alpestris), Microseris cuspidata (N. cuspidata), and Microseris troximoides (N. troximoides).
According to POWO Microseris contains the following 22 species:[1]
Scientific Name
Authority
Common Name
Native Range
Microseris acuminata
Greene
Sierra foothill silverpuffs
California, Oregon
Microseris alpestris
(A.Gray) Q.Jones ex Cronquist
alpine lake false dandelion
California, Oregon, Washington
Microseris bigelovii
(A.Gray) Sch.Bip.
coastal silverpuffs
British Columbia, California, Oregon, Washington
Microseris borealis
(Bong.) Sch.Bip.
northern microseris
Alaska, British Columbia, California, Oregon, Washington
Microseris campestris
Greene
San Joaquin silverpuffs
California
Microseris cuspidata
(Pursh) Sch.Bip.
prairie false dandelion
Alberta, Arkansas, Colorado, Illinois, Iowa, Kansas, Manitoba, Minnesota, Missouri, Montana, Nebraska, New Mexico, North Dakota, Oklahoma, Saskatchewan, South Dakota, Texas, Wisconsin, Wyoming
Microseris decipiens
K.L.Chambers
Santa Cruz silverpuffs
California
Microseris douglasii
(DC.) Sch.Bip.
Douglas' silverpuffs
California, Mexico Northwest, Oregon
Microseris elegans
Greene ex A.Gray
elegant silverpuffs
California, Mexico Northwest
Microseris heterocarpa
(Nutt.) K.L.Chambers
grassland silverpuffs
Arizona, California, Mexico Northwest
Microseris howellii
A.Gray
Howell's silverpuffs
Oregon
Microseris laciniata
(Hook.) Sch.Bip.
cutleaf silverpuffs
California, Oregon, Washington
Microseris lanceolata
(Walp.) Sch.Bip.
murnong
New South Wales, Queensland, South Australia, Tasmania, Victoria, Western Australia
Microseris lindleyi
(DC.) A.Gray
Lindley's silverpuffs
Arizona, British Columbia, California, Idaho, Mexico Northwest, Nevada, New Mexico, Oregon, Texas, Utah, Washington
Microseris nigrescens
L.F.Hend.
speckled false dandelion
Idaho, Montana, Wyoming
Microseris nutans
(Hook.) Sch.Bip.
nodding microseris
Alberta, British Columbia, California, Colorado, Idaho, Montana, Nevada, Oregon, South Dakota, Utah, Washington, Wyoming
Microseris paludosa
(Greene) J.T.Howell
marsh silverpuffs
California
Microseris pygmaea
D.Don
Chile Central, Chile North, Peru
Microseris scapigera
Sch.Bip.
plains yam daisy
New Zealand South, Tasmania, Victoria
Microseris sylvatica
Sch.Bip.
sylvan scorzonella
California
Microseris troximoides
A.Gray
sagebrush false dandelion
British Columbia, California, Idaho, Montana, Nevada, Oregon, Utah, Washington, Wyoming
Microseris walteri
Gand.
murnong or yam daisy
New South Wales, Queensland, South Australia, Tasmania, Victoria, Western Australia
^ abcPOWO (2023). "Microseris D.Don". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 15 April 2023.
^Compositae Working Group (CWG). "Microseris". Global Compositae Database. Retrieved 2023-05-17.
^Chambers, Kenton L. (2020). "Microseris D. Don - FNA". Flora of North America. Retrieved 17 April 2023.
^ abChambers, Kenton L. (2020). "Nothocalaïs D. Don - FNA". Flora of North America. Retrieved 17 April 2023.
^USDA, NRCS (2023). "Nothocalais (A. Gray) Greene". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 15 April 2023.
^WFO (2023). "Nothocalais (A.Gray) Greene". World Flora Online. Retrieved 15 April 2023.
^Compositae Working Group (CWG). "Nothocalais". Global Compositae Database. Retrieved 2023-05-17.
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