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Vallisneria
''Vallisneria'' (named in honor of Antonio Vallisneri) is a genus of freshwater aquatic plant, commonly called eelgrass, tape grass or vallis. The genus is widely distributed in tropical and subtropical regions of Asia, Africa, Europe, and North America. ''Vallisneria'' is a submerged plant that spreads by runners and sometimes forms tall underwater meadows. Leaves arise in clusters from their roots. The leaves have rounded tips, and definite raised veins. Single white female flowers grow to the water surface on very long stalks. Male flowers grow on short stalks, become detached, and float to the surface. It is dioecious, with male and female flowers on separate plants. The fruit is a banana-like capsule having many tiny seeds. Sometimes it is confused with the superficially similar ''Sagittaria'' when grown submerged. This plant should not be confused with ''Zostera'' species, marine seagrasses that are usually also given the common name "eelgrass". ''Vallisneria'' has arche ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vallisneria Natans
''Vallisneria'' (named in honor of Antonio Vallisneri) is a genus of freshwater aquatic plant, commonly called eelgrass, tape grass or vallis. The genus is widely distributed in tropical and subtropical regions of Asia, Africa, Europe, and North America. ''Vallisneria'' is a submerged plant that spreads by Vegetative reproduction, runners and sometimes forms tall underwater meadows. Leaf, Leaves arise in clusters from their roots. The leaves have rounded tips, and definite raised veins. Single white female flowers grow to the water surface on very long stalks. Male flowers grow on short stalks, become detached, and float to the surface. It is dioecious, with male and female flowers on separate plants. The fruit is a banana-like capsule having many tiny seeds. Sometimes it is confused with the superficially similar ''Sagittaria'' when grown submerged. This plant should not be confused with ''Zostera'' species, marine seagrasses that are usually also given the common name "eelgra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vallisneria Nana
''Vallisneria'' (named in honor of Antonio Vallisneri) is a genus of freshwater aquatic plant, commonly called eelgrass, tape grass or vallis. The genus is widely distributed in tropical and subtropical regions of Asia, Africa, Europe, and North America. ''Vallisneria'' is a submerged plant that spreads by runners and sometimes forms tall underwater meadows. Leaves arise in clusters from their roots. The leaves have rounded tips, and definite raised veins. Single white female flowers grow to the water surface on very long stalks. Male flowers grow on short stalks, become detached, and float to the surface. It is dioecious, with male and female flowers on separate plants. The fruit is a banana-like capsule having many tiny seeds. Sometimes it is confused with the superficially similar ''Sagittaria'' when grown submerged. This plant should not be confused with ''Zostera'' species, marine seagrasses that are usually also given the common name "eelgrass". ''Vallisneria'' has arche ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vallisneria Longipedunculata
''Vallisneria'' (named in honor of Antonio Vallisneri) is a genus of freshwater aquatic plant, commonly called eelgrass, tape grass or vallis. The genus is widely distributed in tropical and subtropical regions of Asia, Africa, Europe, and North America. ''Vallisneria'' is a submerged plant that spreads by runners and sometimes forms tall underwater meadows. Leaves arise in clusters from their roots. The leaves have rounded tips, and definite raised veins. Single white female flowers grow to the water surface on very long stalks. Male flowers grow on short stalks, become detached, and float to the surface. It is dioecious, with male and female flowers on separate plants. The fruit is a banana-like capsule having many tiny seeds. Sometimes it is confused with the superficially similar ''Sagittaria'' when grown submerged. This plant should not be confused with ''Zostera'' species, marine seagrasses that are usually also given the common name "eelgrass". ''Vallisneria'' has arche ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vallisneria Erecta
''Vallisneria'' (named in honor of Antonio Vallisneri) is a genus of freshwater aquatic plant, commonly called eelgrass, tape grass or vallis. The genus is widely distributed in tropical and subtropical regions of Asia, Africa, Europe, and North America. ''Vallisneria'' is a submerged plant that spreads by runners and sometimes forms tall underwater meadows. Leaves arise in clusters from their roots. The leaves have rounded tips, and definite raised veins. Single white female flowers grow to the water surface on very long stalks. Male flowers grow on short stalks, become detached, and float to the surface. It is dioecious, with male and female flowers on separate plants. The fruit is a banana-like capsule having many tiny seeds. Sometimes it is confused with the superficially similar ''Sagittaria'' when grown submerged. This plant should not be confused with ''Zostera'' species, marine seagrasses that are usually also given the common name "eelgrass". ''Vallisneria'' has arche ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vallisneria Densiserrulata
''Vallisneria'' (named in honor of Antonio Vallisneri) is a genus of freshwater aquatic plant, commonly called eelgrass, tape grass or vallis. The genus is widely distributed in tropical and subtropical regions of Asia, Africa, Europe, and North America. ''Vallisneria'' is a submerged plant that spreads by runners and sometimes forms tall underwater meadows. Leaves arise in clusters from their roots. The leaves have rounded tips, and definite raised veins. Single white female flowers grow to the water surface on very long stalks. Male flowers grow on short stalks, become detached, and float to the surface. It is dioecious, with male and female flowers on separate plants. The fruit is a banana-like capsule having many tiny seeds. Sometimes it is confused with the superficially similar ''Sagittaria'' when grown submerged. This plant should not be confused with ''Zostera'' species, marine seagrasses that are usually also given the common name "eelgrass". ''Vallisneria'' has arche ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vallisneria Caulescens
''Vallisneria'' (named in honor of Antonio Vallisneri) is a genus of freshwater aquatic plant, commonly called eelgrass, tape grass or vallis. The genus is widely distributed in tropical and subtropical regions of Asia, Africa, Europe, and North America. ''Vallisneria'' is a submerged plant that spreads by runners and sometimes forms tall underwater meadows. Leaves arise in clusters from their roots. The leaves have rounded tips, and definite raised veins. Single white female flowers grow to the water surface on very long stalks. Male flowers grow on short stalks, become detached, and float to the surface. It is dioecious, with male and female flowers on separate plants. The fruit is a banana-like capsule having many tiny seeds. Sometimes it is confused with the superficially similar ''Sagittaria'' when grown submerged. This plant should not be confused with ''Zostera'' species, marine seagrasses that are usually also given the common name "eelgrass". ''Vallisneria'' has arche ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vallisneria Australis
''Vallisneria'' (named in honor of Antonio Vallisneri) is a genus of freshwater aquatic plant, commonly called eelgrass, tape grass or vallis. The genus is widely distributed in tropical and subtropical regions of Asia, Africa, Europe, and North America. ''Vallisneria'' is a submerged plant that spreads by runners and sometimes forms tall underwater meadows. Leaves arise in clusters from their roots. The leaves have rounded tips, and definite raised veins. Single white female flowers grow to the water surface on very long stalks. Male flowers grow on short stalks, become detached, and float to the surface. It is dioecious, with male and female flowers on separate plants. The fruit is a banana-like capsule having many tiny seeds. Sometimes it is confused with the superficially similar ''Sagittaria'' when grown submerged. This plant should not be confused with ''Zostera'' species, marine seagrasses that are usually also given the common name "eelgrass". ''Vallisneria'' has arche ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vallisneria Annua
''Vallisneria'' (named in honor of Antonio Vallisneri) is a genus of freshwater aquatic plant, commonly called eelgrass, tape grass or vallis. The genus is widely distributed in tropical and subtropical regions of Asia, Africa, Europe, and North America. ''Vallisneria'' is a submerged plant that spreads by runners and sometimes forms tall underwater meadows. Leaves arise in clusters from their roots. The leaves have rounded tips, and definite raised veins. Single white female flowers grow to the water surface on very long stalks. Male flowers grow on short stalks, become detached, and float to the surface. It is dioecious, with male and female flowers on separate plants. The fruit is a banana-like capsule having many tiny seeds. Sometimes it is confused with the superficially similar ''Sagittaria'' when grown submerged. This plant should not be confused with ''Zostera'' species, marine seagrasses that are usually also given the common name "eelgrass". ''Vallisneria'' has arche ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vallisneria Anhuiensis
''Vallisneria'' (named in honor of Antonio Vallisneri) is a genus of freshwater aquatic plant, commonly called eelgrass, tape grass or vallis. The genus is widely distributed in tropical and subtropical regions of Asia, Africa, Europe, and North America. ''Vallisneria'' is a submerged plant that spreads by runners and sometimes forms tall underwater meadows. Leaves arise in clusters from their roots. The leaves have rounded tips, and definite raised veins. Single white female flowers grow to the water surface on very long stalks. Male flowers grow on short stalks, become detached, and float to the surface. It is dioecious, with male and female flowers on separate plants. The fruit is a banana-like capsule having many tiny seeds. Sometimes it is confused with the superficially similar ''Sagittaria'' when grown submerged. This plant should not be confused with ''Zostera'' species, marine seagrasses that are usually also given the common name "eelgrass". ''Vallisneria'' has arche ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vallisneria Americana
''Vallisneria americana'', commonly called wild celery, water-celery, tape grass, or eelgrass, is a plant in the family Hydrocharitaceae, the "tape-grasses". ''V. americana'' is a fresh water species that can tolerate salt, living in salinities varying from fresh water (0 parts per thousand) to 18 parts per thousand, although the limit to the salt tolerance is unclear, and is generally dependent on the duration and intensity of the plants’ exposure to the saline water. ''V. americana'' is a deep rooted plant with leaves, approximately one inch wide, with the ability to rise two or more meters above the clustered base of the plant. Contrary to the implications of one of its common names, wild celery bears little to no resemblance to the celery used as a vegetable. ''V. americana'' grows under water and is consumed by various animals, including the canvasback. The plants themselves are long, limp, flat, and have a green mid-ridge. Despite its name, it is not restricted to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vallisneria Spiralis
''Vallisneria spiralis'', also known as straight vallisneria, tape grass, or eel grass is a common aquarium plant that prefers good light and a nutrient rich substrate. In the wild, it can be found in tropical and sub-tropical regions worldwide. Overview It has narrow, linear leaves that range in colour from a pale-green to reddish up to 3 feet (1 m) long and up to 0.75 inches broad. ''V. spiralis'' is monoecious with male flowers carried on long spiral stalks that break away from the plant and float on the water's surface. In the variety ''V.s, gigantea'' the female flowers are on stalks (pedicels) up to six feet (1.85 meters) in length. After the female flowers have been pollinated, the pedicel curls up like a tendril, drawing the young fruit closer to the bed of the stream or pond; thus the name "spiralis". Seeds have not been observed germinating in aquaria. Instead, it most often propagates by runners which can lead to dense stands. One form of this plant has been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flower
A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Angiospermae). The biological function of a flower is to facilitate reproduction, usually by providing a mechanism for the union of sperm with eggs. Flowers may facilitate outcrossing (fusion of sperm and eggs from different individuals in a population) resulting from cross-pollination or allow selfing (fusion of sperm and egg from the same flower) when self-pollination occurs. There are two types of pollination: self-pollination and cross-pollination. Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. Cross-pollination is when pollen is transferred from the anther of one flower to the stigma of another flower on a different individual of the same species. Self-pollination happens in flowers where the stamen and carpel mature at the same time, and are positi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
