Hymenasplenium Hayata
  • Bot. Mag. (Tokyo) 41(492): 712. 1927.


Cite taxon page as 'WFO (2020): Hymenasplenium Hayata. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000018635. Accessed on: 27 May 2020'

General Information

Herbs, epilithic, epiphytic, or terrestrial. Rhizome dorsiventral, thin, up to ca. 5 mm in diam., widely creeping, with clathrate scales. Fronds herbaceous, remote; stipe usually shiny and castaneous to dark purplish or black, rarely grayish green, semiterete abaxially, sulcate adaxially; lamina 1-pinnate, rarely simple; rachis sulcate adaxially, basiscopic margin of pinnae often decurrent and forming narrow abaxial wings on rachis; pinnae asymmetrical with basal basiscopic part cut away and becoming dimidiate; basiscopic margin entire, acroscopic margin crenate, undulate, or serrate, sometimes with retuse teeth. Veins free, rarely anastomosing, anadromously branching, becoming simple toward pinna apex, not reaching margin, 1 to several basal basiscopic veins lacking. Sori solitary, rarely double, linear to subelliptic, indusiate; indusium thinly membranous to papery, free margin entire to erose; stalks of sporangia long uniseriate, annuli of 20-28 hardened cells. Spores bilateral, elliptic, perispore elaborate, exospore smooth; in sexual plants 64 spores per sporangium. Plants sexual or agamosporous. x = (36), 38, 39.

  • Provided by: [B].Flora Of CHina @ efloras.org
    • Source: [
    • 1
    • ]. 

     Information From

    Aspleniaceae
    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    Flora Of CHina @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=2
    'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • B Missouri Botanical Garden
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • C CC0 1.0 Universal (CC0 1.0).