''Lanceola'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

green algae The green algae (singular: green alga) are a group consisting of the Prasinodermophyta and its unnamed sister which contains the Chlorophyta and Charophyta/Streptophyta. The land plants (Embryophytes) have emerged deep in the Charophyte alga as ...

in the family Characiaceae, containing a single species, ''Lanceola spatulifera''. It is found in freshwater habitats. ''Lanceola'' consists of free-floating, single cells. The cell is narrowly spindle-shaped (fusiform), tapered into a narrow spine at one end, and at the other end a lanceolate appendage. The

cell wall A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mech ...

is smooth. Cells contain a single parietal

chloroplast A chloroplast () is a type of membrane-bound organelle known as a plastid that conducts photosynthesis mostly in plant and algal cells. The photosynthetic pigment chlorophyll captures the energy from sunlight, converts it, and stores it in ...

with a pyrenoid, and a central

nucleus Nucleus ( : nuclei) is a Latin word for the seed inside a fruit. It most often refers to: *Atomic nucleus, the very dense central region of an atom *Cell nucleus, a central organelle of a eukaryotic cell, containing most of the cell's DNA Nucle ...

. It reproduces by forming

zoospore A zoospore is a motile asexual spore that uses a flagellum for locomotion. Also called a swarm spore, these spores are created by some protists, bacteria, and fungi to propagate themselves. Diversity Flagella types Zoospores may possess one or mo ...

s with two

flagella A flagellum (; ) is a hairlike appendage that protrudes from certain plant and animal sperm cells, and from a wide range of microorganisms to provide motility. Many protists with flagella are termed as flagellates. A microorganism may have f ...

. The genus was created by

František Hindák František () is a masculine given name of Czech origin. It is a cognate of Francis, Francisco, François, and Franz. People with the name include: *Frank Daniel (František Daniel) (1926–1996), Czech film director, producer, and screenwriter *F ...

for the leaf-like appendage on one end of the cell. However, it has been rejected by other taxonomists, because the structure appears typical of the appendages found in the genus '' Ankyra''.

References

Sphaeropleales genera Sphaeropleales Monotypic algae genera Freshwater algae {{Chlorophyceae-stub