Ophioglossaceae Martinov
  • Tekhno-Bot. Slovar. 438. 1820. (27 Mar 1820)
  • Adder's tongue Family


This taxon is accepted by World Flora Online consortium
Notes: More details could be found in The Plant List v.1.1. Originally in The Plant List v.1.0

General Description

Plants perennials, terrestrial or epiphytic. Roots lacking root hairs, unbranched or with a few narrow lateral branches, in 1 species dichotomously branched. Stems simple, unbranched, upright, with eustelic vascular tissue. Leaf bases dilated, clasping, forming sheath, open or fused, surrounding successive leaf primordia; primordia glabrous or with long, uniseriate hairs. Leaves 1(--2) per stem, with common stalk divided into sterile, laminate, photosynthetic portion (trophophore) and fertile, spore-bearing portion (sporophore). Trophophore blades compound to simple, rarely absent, veins anastomosing or free, pinnate, or arranged like ribs of fan. Indument absent or of widely scattered, long, uniseriate hairs, especially on petioles and rachises. Sporophores pinnately branched or simple. Sporangia exposed or embedded, 0.5--1.5 mm diam., thick-walled, with thousands of spores. Spores all 1 kind, trilete, thick-walled, surface rugate, tuberculate, baculate (with projecting rods usually higher than wide), sometimes joined in delicate network, mostly with ± warty surface. Gametophytes not green, usually fleshy, round or linear, subterranean, mycorrhizal.

Plants perennial, mostly terrestrial, rarely epiphytic, usually small and fleshy, lacking sclerenchyma. Roots lacking root hairs, unbranched or with a few narrow lateral branches [rarely dichotomously branched], fibrous or fleshy, sometimes producing vegetative buds. Rhizome mostly erect, less often horizontal, rarely branched, eustelic, glabrous or hairy. Fronds 1 to few per plant, monomorphic, vernation nodding (not circinate), erect or folded, stipe base dilated, clasping, forming open or fused sheath surrounding successive leaf buds; buds glabrous or with long, uniseriate hairs; common stipe usually dividing into sterile, laminate, photosynthetic portion (trophophore) and fertile, spore-bearing portion (sporophore); sterile lamina ternately or pinnately compound to simple, rarely absent, glabrous or with scattered, long, uniseriate hairs, especially on stipe and rachis; veins anastomosing or free, pinnate, or palmate. Sporophores 1 per frond [rarely more], spikelike or pinnately branched; sporangia exposed or embedded, sometimes clustered on very short lateral branches, wall 2 cells thick, annulus absent; spores many (> 1000) per sporangium, globose-tetrahedral, trilete, thick-walled, surface rugate, tuberculate, baculate (with projecting rods usually higher than wide), sometimes joined in delicate network, mostly with ± warty surface. Gametophytes subterranean, usually fleshy, mycorrhizal, non-photosynthetic, orbicular or linear. x = 30, (44), 45, (46), 94.

Morphology

Terrestrial, rarely epiphytic (none in W.Africa) herbs

Leaves few or solitary, simple (Ophioglossum) or decompound (Botrychium) with a sterile foliaceous segment and fertile non–foliaceous dorsal segment, arising from a common stipe; fertile segments simple, linear (Ophioglossum), or compound

Common Names

NameLanguage
Adder's tongue Family

 Information From

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.
  • A Missouri Botanical Garden
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.
  • B Flora of North America Association
Plants Of the World Online Portal
https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
http://www.plantsoftheworldonline.org/terms-and-conditions
  • C The Trustees of the Royal Botanic Gardens, Kew
Ophioglossaceae
World Flora Online Data. 2017.
  • D CC0 1.0 Universal (CC0 1.0).
World Flora Online consortium
http://www.worldfloraonline.org/organisation/WFO
World Flora Online Data. 2018.
  • E CC0 1.0 Universal (CC0 1.0).