Batrachospermaceae
From Wikipedia, the free encyclopedia
| Batrachospermaceae | |
|---|---|
 | |
| Batrachospermum moniliforme | |
Scientific classification  | |
| Domain: | Eukaryota |
| Clade: | Archaeplastida |
| Division: | Rhodophyta |
| Class: | Florideophyceae |
| Order: | Batrachospermales |
| Family: | Batrachospermaceae C.Agardh |
| Genera[1] | |
| |
Batrachospermaceae[2] is a family of freshwater red algae (Rhodophyta), a group of reddish plants found in rivers and streams. These algae have a distinct life cycle called the "Lemanea-type," starting with small reproductive cells known as carpospores that grow into a form called chantransia. This leads to a sporophyte phase, during which a process called meiosis—where cells divide to create new reproductive cells—takes place in a specialized cell at the filament’s tip, known as the apical cell, responsible for growth. This division results in the gametophyte, the stage of the algae that produces reproductive structures.[3] Various genera within this family are listed in the table below.
The structure of Batrachospermaceae is remarkable for its organization: each filament, or thread-like strand, grows from a single apical cell, a feature termed uniaxial.[4] Inside their cells, they have pit connections—structures with two cap layers, one of which is enlarged—that help maintain strength and linkage between cells.[3] These characteristics make Batrachospermaceae a notable group within the study of freshwater algae.
| Genus | Authority | Number of species |
|---|---|---|
| Acarposporophycos[5] | Necchi | 1 |
| Balliopsis[6] | G.W. Saunders & Necchi | 1 |
| Batrachospermum[7] | Roth | 34 |
| Kumanoa[8][9] | Entwisle, M.L.Vis, W.B.Chiasson, Necchi & A.R.Sherwood | 39 |
| Lympha[10] | J.R.Evans, I.S.Chapuis & M.L.Vis | 1 |
| Montagnia[11] | Necchi, M.L.Vis & A.S.Garcia | 2 |
| Nocturama[12] | Entwisle & M.L.Vis | 2 |
| Nothocladus[13] | Skuja | 18 |
| Petrohua[14] | G.W.Saunders | 1 |
| Psilosiphon[15][13] | Entwisle | 1 |
| Sheathia[16] | Salomaki & M.L.Vis | 19 |
| Sirodotia[17][18] | Kylin | 5 |
| Torularia[19][20] | Bonnemaison | 4 |
| Tuomeya[21][22] | Harvey | 1 |
| Virescentia[23] | (Sirodot) Necchi, D.C.Agostinho & M.L.Vis | 7 |
| Visia[5] | Necchi | 4 |
| Volatus[24] | I.S.Chapuis & M.L.Vis | 3 |
