Compilation
Microseris aphantocarpha

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Name

Identification
Microseris douglasii (DC.) Sch. Bip. [family COMPOSITAE ] (stored under name); Microseris aphantocarpha (A. Gray) Sch. Bip. [family COMPOSITAE ]
Related name
  • Microseris aphantocarpha
  • Microseris elegans
  • Calais aphantocarpha
  • Calais tenella
  • Microseris douglasii
Common name
  • Tender silverpuffs, Flora of North America Vol. 19
  • Elegant silverpuffs, Flora of North America Vol. 19

Flora

Entry for Microseris douglasii (de Candolle) Schultz-Bipontinus subsp. tenella (A. Gray) K. L. Chambers [family COMPOSITAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 19,
Names
Microseris douglasii (de Candolle) Schultz-Bipontinus subsp. tenella (A. Gray) K. L. Chambers [family COMPOSITAE], Contr. Dudley Herb., 4: 294. 1955
Calaïs tenella A. Gray [family ], in War Department [U.S.], Pacif. Railr. Rep., 4(5): 114, plate 17, figs. 6–10. 1857
Calaïs aphantocarpha A. Gray [family ]
Microseris aphantocarpha (A. Gray) Schultz-Bipontinus [family COMPOSITAE]
Microseris tenella (A. Gray) Schultz-Bipontinus [family COMPOSITAE]
Microseris tenella var. aphantocarpha (A. Gray) S. F. Blake [family COMPOSITAE]
Treatment Author(s)
Kenton L. Chambers
Information
pappi usually of deltate or ovate, arcuate, usually plane or barely involute scales 0.5–1 mm, shorter than cypselae, sometimes nearly obsolete. 2n = 18., filled by embryos), ribs constricted at apices, widest beyond middles, cypselae truncate-fusiform, 3–6.5 mm (tapered to basal callosities).
Phenology
mar-may (spring), jun (summer)
Altitude range
0–500 m
Distribution
USA Calif.
Discussion
Subspecies tenella intergrades completely with subsp. douglasii in west-central California. It occurs near the immediate coast; morphologic variation and chloroplast DNA suggest a history of hybridization with M. bigelovii.

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