Penthoraceae Rydb. ex Britton
  • Man. Fl. N. States 475. 1901. (16 Oct 1901)


Cite taxon page as 'WFO (2021): Penthoraceae Rydb. ex Britton. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-7000000451. Accessed on: 20 Oct 2021'

General Information

Perennial herbs. Stems simple or branched. Leaves cauline, alternate, simple; stipules absent; petiole present or absent; blade margins sharply serrate or doubly serrate. Inflorescences terminal, scorpioid racemes. Flowers bisexual; perianth and androecium hypogynous or perigynous; hypanthium present; sepals 5(-8), connate proximally; petals absent or 1-8, distinct; nectary disc absent; stamens 10, distinct, adnate to rim of hypanthium; anthers dehiscent by longitudinal slits; pistils 1, (4-)5(-8)-carpellate, connate basally and laterally, partially adnate to hypanthium; ovary superior or partially inferior, (4-)5(-8)-locular proximally; placentation marginal; ovules anatropous, bitegmic, crassinucellate; styles 1 per carpel, distinct; stigmas 1 per carpel, terminal, capitate. Fruits capsular, dehiscence circumscissile proximal to free portion of styles. Seeds 300-400, tan, yellowish brown, or pinkish, ellipsoid to subfusiform, funicular end more tapered; embryo straight; endosperm scant, cellular.

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

    Literature

    SELECTED REFERENCES Baldwin, J. T. and B. M. Speese. 1951. Penthorum: Its chromosomes. Rhodora 53: 89-91. Haskins, M. L. and W. J. Hayden. 1987. Anatomy and affinities of Penthorum. Amer. J. Bot. 74: 164-177. Spongberg, S. A. 1972. The genera of Saxifragaceae in the southeastern United States. J. Arnold Arbor. 53: 409-498.

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

    Included Genus

     Information From

    Flora of North America @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=1
    'Flora of North America @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=1 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • A Flora of North America Association
    Penthoraceae
    World Flora Online Data. 2017.
    • B CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • C CC0 1.0 Universal (CC0 1.0).