Hostinella

{{Short description|Form genus}}

{{Automatic taxobox

|taxon = Hostinella

|fossil_range = {{geological range/linked|Late Silurian|Early Devonian}}

|authority = Barrande (1868) ex Štúr (1882)

| type_species = Hostinella hostinensis

| type_species_authority = Barrande (1882)

|subdivision =

• †H. bohemica Kräusel & Weyland 1932
• †H. crispa Arnold 1939
• †H. globosa Lang 1925
• †H. heardii D.Edwards (1980)
• †H. hercynica Mägdefrau 1938
• †H. hostinensis Barrande (1882)
• †H. racemosa Lang 1925
• †H. racheneuri Ledoux-Marcelle 1927
• †H. silurica Banks (1974)
• †H. strictissima Høeg 1942
• †H. wahnbachensis Kräusel & Weyland 1935

|synonyms =

• Hostimella (sic) Obrhel 1961

}}

Hostinella is a form genus, used for bare dichotomously branching stems (axes) which have not been found in association with spore-forming organs or sporangia and so cannot be assigned to a more precise genus or species. Specimens assigned to this genus have been found in Bathurst Island, Canada, in the Bertie Formation of Upper Silurian age (around {{Period span/brief|Upper Silurian|-1}}), where the stems are approximately 1.2 mm in diameter; and in Lower Devonian Senni beds (from around {{Period span/brief|Lower Devonian|-1}}) where the axes have a straited external appearance and contain xylem with tracheids (diameter: 40 μm).

It is known to co-occur with Krithodeophyton.