Platystemon Benth.
  • Trans. Hort. Soc. London, ser. 2 1(5): 405. 1835.
  • Cream cups [Greek platus, broad, and stemon, stamen]

Cite taxon page as 'WFO (2021): Platystemon Benth. Published on the Internet; Accessed on: 17 Oct 2021'

General Information

Herbs , annual, caulescent, usually distinctly pubescent, from fibrous roots. Stems leafy, erect to decumbent, branching distally. Leaves mostly opposite or whorled, sessile; blade broadly linear, unlobed. Inflorescences axillary or terminal, 1-flowerd; bracts absent; bud nodding. Flowers: receptacle slightly expanded beneath calyx; sepals 3, with overlapping, loosely connivent flaps; petals 6, occasionally more on robust specimens; stamens many in several series; filaments dilated distally; pistil 6-many-carpellate; ovary with each carpel forming almost closed locule with 4-24 ovules; stigmas 1 per carpel. Capsules erect or sometimes nodding, carpels dissociating, each torulose and breaking transversely into 1-seeded segments, sometimes also releasing free seeds. Seeds usually many, aril absent. x = 6.

  • Provided by: [A].Flora of North America @
    • Source: [
    • 1
    • ]. 



    Hannan, G. L. 1982. Correlation of morphological variation in Platystemon californicus (Papaveraceae) with flower color and geography. Syst. Bot. 7: 35-47.

  • Provided by: [A].Flora of North America @
    • Source: [
    • 1
    • ]. 

    Other Local Names

    Cream cups [Greek platus, broad, and stemon, stamen]

     Information From

    Flora of North America @
    'Flora of North America @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • A Flora of North America Association
    World Flora Online Data. 2017.
    • B CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    World Flora Online Data. 2018.
    • C CC0 1.0 Universal (CC0 1.0).