Hildenbrandiales | |
---|---|
Hildenbrandia rivularis | |
Scientific classification | |
(unranked): | Archaeplastida |
Division: | Rhodophyta |
Class: | Florideophyceae |
Subclass: |
Hildenbrandiophycidae G.W.Saunders & Hommersand |
Order: |
Hildenbrandiales Pueschel & Cole, 1982 |
Family: |
Hildenbrandiaceae Rabenhorst, 1868 |
Genera [1] | |
Hildenbrandiales is an order of crustose forms red alga which bear conceptacles [2] and produce secondary pit-connections. [3] They reproduce by vegetative gemmae [4] as well as tetrasporangia, which are produced inside the conceptacles. The way in which the tetraspores are produced is unusual enough to justify the formation of this distinct order. [2] Some members of the order are known from freshwater rivers as well. [5]
Hildenbradiales are difficult to discriminate on morphological grounds; tetrasporangia morphology is the only vaguely reliable character, but molecular techniques have indicated a monophyletic Apophlaea within a paraphyletic Hildenbrandia, with many Hildenbrandia species being recognized as non-monophyletic. [1]
Hildenbrandiales | |
---|---|
Hildenbrandia rivularis | |
Scientific classification | |
(unranked): | Archaeplastida |
Division: | Rhodophyta |
Class: | Florideophyceae |
Subclass: |
Hildenbrandiophycidae G.W.Saunders & Hommersand |
Order: |
Hildenbrandiales Pueschel & Cole, 1982 |
Family: |
Hildenbrandiaceae Rabenhorst, 1868 |
Genera [1] | |
Hildenbrandiales is an order of crustose forms red alga which bear conceptacles [2] and produce secondary pit-connections. [3] They reproduce by vegetative gemmae [4] as well as tetrasporangia, which are produced inside the conceptacles. The way in which the tetraspores are produced is unusual enough to justify the formation of this distinct order. [2] Some members of the order are known from freshwater rivers as well. [5]
Hildenbradiales are difficult to discriminate on morphological grounds; tetrasporangia morphology is the only vaguely reliable character, but molecular techniques have indicated a monophyletic Apophlaea within a paraphyletic Hildenbrandia, with many Hildenbrandia species being recognized as non-monophyletic. [1]