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Azolla filiculoides root cross section Azolla covering the Canning River, Western Australia Azolla is a highly productive plant . It can double its biomass in as little as 1.9 days, [ 13 ] depending on growing conditions, and yield can reach 8–10 tonnes fresh matter/ha in Asian rice fields. 37.8 t fresh weight/ha (2.78 t/ha dry weight) has ...
Azolla filiculoides (water fern) is a species of aquatic fern. It is native to warm temperate and tropical regions of the Americas , and has been introduced to Europe , North and sub-Saharan Africa , China , Japan , New Zealand , Australia , the Caribbean and Hawaii .
Azolla cristata , the Carolina mosquitofern, [3] Carolina azolla or water velvet, is a species of Azolla native to the Americas, in eastern North America from southern Ontario southward, and from the east coast west to Wisconsin and Texas, and in the Caribbean, and in Central and South America from southeastern Mexico south to northern Argentina and Uruguay.
Non-vascular plants are plants without a vascular system consisting of xylem and phloem. Instead, they may possess simpler tissues that have specialized functions for the internal transport of water. Instead, they may possess simpler tissues that have specialized functions for the internal transport of water.
Azolla mexicana is a floating aquatic with blue-green to dark red leaves. It is distinguished from the two other species of the genus present in North America, Azolla caroliniana and Azolla filiculoides, by having multicellular hairs on the leaves and pits on the megaspores. [5] [6] [7]
The upper lobe of the leaf is larger than the lower, in contrast to A. filiculoides where the lower leaf is larger in outline. [2] The sporocarps are in groups of four, not in pairs such as in the other species. The plant never attains a red color, such as is often seen towards the end of the growing season in all other Azolla species. [3]
The modern fern Azolla filiculoides.Blooms of a related species may have pulled the Earth into the current icehouse world.. The Azolla event is a paleoclimatology scenario hypothesized to have occurred in the middle Eocene epoch, [1] around , when blooms of the carbon-fixing freshwater fern Azolla are thought to have happened in the Arctic Ocean.
Azolla pinnata is a species of fern known by several common names, including mosquitofern, [2] feathered mosquitofern and water velvet. It is native to much of Africa, Asia (Brunei Darussalam, China, India, Japan, Korea, and the Philippines) and parts of Australia. It is an aquatic plant, it is found