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Species
Azolla pinnata R. Br.
IUCN
NCBI
EOL Text
Red List Criteria
Year Assessed
Assessor/s
Reviewer/s
Contributor/s
This aquatic fern is common in tropical regions of the world where it occurs in stagnant water. It can spread rapidly in and around rivers, ditches, and ponds and even in eutrophic waters. Listed as Least Concern as it is a widespread species and faces no major threats.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | © International Union for Conservation of Nature and Natural Resources |
Source | http://www.iucnredlist.org/apps/redlist/details/168790 |
"Red List Category & Criteria: Least Concern ver 3.1 Year Assessed: 2010 Assessor/s: Gupta, A.K. Reviewer/s: Juffe Bignoli, D., Khampheng, H. & Zhuang, X. Justification: This aquatic fern is common in tropical regions of the world where it occurs in stagnant water. It can spread rapidly in and around rivers, ditches, and ponds and even in eutrophic waters. Listed as Least Concern as it is a widespread species and faces no major threats. Conservation Actions: No conservation measures are in place or needed."
License | http://creativecommons.org/licenses/by/3.0/ |
Rights holder/Author | "Molur et al, 2011", IUCN and ZOO 2011, India Biodiversity Portal |
Source | http://indiabiodiversity.org/species/show/226657 |
Population
Population Trend
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | © International Union for Conservation of Nature and Natural Resources |
Source | http://www.iucnredlist.org/apps/redlist/details/168790 |
Population: There is no information about its global population but sometimes it forms dense mat that can compete with other floating plants. Population Trend: Unknown
License | http://creativecommons.org/licenses/by/3.0/ |
Rights holder/Author | "Molur et al, 2011", IUCN and ZOO 2011, India Biodiversity Portal |
Source | http://indiabiodiversity.org/species/show/226657 |
Major Threats
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | © International Union for Conservation of Nature and Natural Resources |
Source | http://www.iucnredlist.org/apps/redlist/details/168790 |
Small floating ferns, whole plant oblong to deltoid in outline, up to 20 × 15 mm. Rhizome up to 0.2 mm in diameter, horizontal, branched into 3-5 alternate pinnae. Roots single or in fascicles of 2-3 at the branche nodes, up to 3.5 cm long, hairy, with conspicuous root cap. Leaves minute in 2 rows, dark green, 2-lobed; upper lobe up to 1.1 mm long, ovate to broadly elliptic in outline, apex pointed, papillate in the centre and with a hyaline border; lower lobe colourless, more or less equal in size. Plant heterosporous, sporocarps on the submerged lower lobes of the leaves.
Major Threat (s): No major threats have been described.
License | http://creativecommons.org/licenses/by/3.0/ |
Rights holder/Author | "Molur et al, 2011", IUCN and ZOO 2011, India Biodiversity Portal |
Source | http://indiabiodiversity.org/species/show/226657 |
pinnata: with pinnate leaves, refers to the distinctly pinnate arrangements of the branches of the stem.
Conservation Actions
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | © International Union for Conservation of Nature and Natural Resources |
Source | http://www.iucnredlist.org/apps/redlist/details/168790 |
"There are three subordinate taxa of Azolla pinnata depending on the range of occurence. A. pinnata africana is found Africa, A. pinnata asiatica in Asia and A. pinnata pinnata in Oceania."
License | http://creativecommons.org/licenses/by/3.0/ |
Rights holder/Author | "Molur et al, 2011", IUCN and ZOO 2011, India Biodiversity Portal |
Source | http://indiabiodiversity.org/species/show/226657 |