Salviniaceae Martinov
  • Tekhno-Bot. Slovar. 559. 1820. (3 Aug 1820)

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 aquatic, forming floating mats; roots present (Azolla) or lacking (Salvinia); stems horizontal, protostelic, vegetative reproduction rapid due to fragmentation. Fronds with exposed upper surface covered with water-repellent papillae, fronds in whorls of 3: two fronds floating, green, lamina orbicular to oblong, small (8-25 mm), third one submersed, finely dissected and rootlike (Salvinia), or fronds alternate, distichous, minute (ca. 1 mm), 2-lobed: one lobe floating, with a cavity near base containing blue-green algae (Anabaena), other lobe submersed, only 1 cell thick (Azolla). Sporangia contained within sporocarps, these inserted on submersed frond and externally uniform (Salvinia) or in pairs with a globose microsporocarp and a smaller ovoid megasporocarp (Azolla); spores of two kinds (plants heterosporous), microspores globose, trilete, megaspores large, spore germination endosporic.

Two genera and ca. 17 species: tropical to temperate regions worldwide; two genera and four species (one introduced) in China.

Lin Youxing. 2000. Salviniaceae and Azollaceae. In: Lin Youxing, ed., Fl. Reipubl. Popularis Sin. 6(2): 340-345.


"Leaves in whorls of three of which two are entire and floating, and the third submerged and finely dissected into root–like segments, which are thickly covered with hairs; floating leaves papillose"

Small floating herbaceous plants

"Rhizome horizontal, branched, siphonostelic, without roots"


  • 1
  • 2 Tekhno-Bot. Slovar. 559. 1820. (3 Aug 1820)

 Information From

Plants Of the World Online Portal
  • A
Flora Of China @
'Flora of China @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  • B All Rights Reserved
  • C CC0 1.0 Universal (CC0 1.0).
World Flora Online consortium
World Flora Online Data. 2017.
  • D CC0 1.0 Universal (CC0 1.0).