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Charales is an order of freshwater green algae in the division Charophyta, class Charophyceae, commonly known as stoneworts.Depending on the treatment of the genus Nitellopsis, living (extant) species are placed into either one family or two (Characeae and Feistiellaceae).
Charophyceae is a class of charophyte green algae. AlgaeBase places it in division Charophyta. [1] Extant (living) species are placed in a single order Charales, [2] commonly known as "stoneworts" and "brittleworts".
Nitellopsis obtusa is a large freshwater alga.It is also known by the common name starry stonewort. [1] This alga grows to a length of over 1.5 metres (4 ft 11 in), is bright translucent green and has branches growing in whorls from the main axis the plants easily break up.
The plant body is a gametophyte.It consists of the main axis (differentiated into nodes and internodes), dimorphic branches (long branch of unlimited growth and short branches of limited growth), rhizoids (multicellular with oblique septa) and stipulodes (needle-shaped structures at the base of secondary laterals).
Charophyta (UK: / k ə ˈ r ɒ f ɪ t ə, ˌ k ær ə ˈ f aɪ t ə /) is a group of freshwater green algae, called charophytes (/ ˈ k ær ə ˌ f aɪ t s /), sometimes treated as a division, [2] yet also as a superdivision [3] or an unranked clade.
Chara vulgaris, the common stonewort, [1] is a green alga species in the genus Chara. Chara vulgaris has spikes between its bark cells in contrast to the similar Chara contraria. Chara vulgaris has spikes between its bark cells in contrast to the similar Chara contraria.
Chara hispida, the bristly stonewort, is a green alga species in the genus Chara. With 30 to 200 cm height and a stem diameter of 2–3 mm Chara hispida is one of the biggest Chara species in Europe.
Tolypella nidifica is a species of stonewort belonging to the family Characeae. [1] It has almost cosmopolitan distribution. [1] References