SPECIES starting with "l"

 

Lemnicola hungarica

Achnanthes hungarica
Achnanthidium hungaricum
Microneis hungarica

  1. Valves linear to linear-elliptical with subrostrate apices
  2. Raphe valve with often asymmetrical stauros
  3. Terminal raphe fissures turned toward opposite sides

Monoraphid - Valves are linear to linear-elliptical with subrostrate apices. The raphe valve has a stauros that is often asymmetrical. Terminal raphe fissures are turned toward opposite sides. Striae biseriate, 18-24 in 10 µm.

Lindavia antiqua

  1. Central star-shape
  2. Striae unequal in length
  3. Shadow lines visible

Centric - Valves are small to moderate sized, with a unique central star-shaped cluster of triangular punctate fields. Shadow lines, termed Schattenlinien in German texts, are visible among the striae. Striae are slightly unequal in length.

Lindavia delicatula

  1. Valve face flat
  2. Valve center colliculate
  3. Single fultoportula
  4. Single rimoportula

Centric - The valve face is flat, and the valve center is colliculate. A single fultoportula is present. A single rimoportula is present on a shortened stria, opposite a single central fultoportula.

Lindavia intermedia

  1. Stria density 11-13 in 10 µm
  2. Central area ~1/3 of total diameter
  3. Areolae in central area random to slightly-radial
  4. Rimoportulae 2-3

Centric - The central area is about 1/3 of the total diameter. In the central area, the fultoportulae and areolae are usually arranged randomly, although they may be slightly radial. Stria density is 11-13 in 10 µm. Two or three equally-spaced, or slightly unevenly-spaced, rimoportulae are located at the central ends of shortened striae.

Lindavia michiganiana

  1. Valve face tangentially undulate
  2. Depressed portion of valve ornamented
  3. Striae reduced in length near the raised portion of valve

Centric - Valves are tangentially undulate with ornamentation on the depressed portion. Alveolate striae cover roughly the outer 1/3 of the valve face, and are reduced in length on the raised portion of the valve.

Lindavia praetermissa

  1. Valve face nearly flat
  2. Central area with many uniform-sized areolae
  3. Central areolae scattered or arranged in weakly radiate rows
  4. Marginal striae short, with shadow lines

Centric - Valves are nearly flat valves and a central area consisting of many uniform-sized areolae. The central areolae are scattered or arranged in weakly radiate rows. Marginal striae are short and have shadow lines.

Lindavia radiosa

Cyclotella radiosa

  1. Central areolae in radial rows
  2. Central areolae coarse
  3. Marginal striae occupy about half valve diameter
  4. Marginal striae with shadow lines

Centric - Valves are concentrically undulate and radially wrinkled. The central areolae are coarse, equal in size and arranged in radial rows. Marginal striae have shadow lines and occupy about half of the valve diameter.

Lindavia rossii

  1. Valve face flat
  2. Ornamentation in central area variable in size and arrangement
  3. Striae uniformly-spaced at valve margin

Centric - Valves are flat, with colliculate face and regularly-spaced, thin marginal striae. Ornamentation in the central area is variable in size and arrangement (note that areolae are absent from the central area). Striae are uniformly-spaced at the valve margin

Luticola minor

  1. Valves linear-lanceolate
  2. Central puncta erratic near margin
  3. Areolae coarse
  4. Striae radiate

Symmetrical biraphid - Valves are large and linear-lanceolate. Apices are cuneate. Striae are radiate. The central area includes a distinct stigma and scattered puncta. Areolae are coarse and easily visible in LM, measuring 18-20 in 10 µm.

Luticola mobiliensis

  1. Valves large
  2. Apices cuneate
  3. Central area puncta irregular
  4. Areolae coarse
  5. Striae radiate throughout

Symmetrical biraphid - Valves are large, with cuneate apices. Striae are radiate, with a higher stria density near the apices. The central area is incomplete and characterized by irregular, scattered puncta. Areolae are coarse and easily visible in LM.

Luticola stigma

  1. Apices protracted
  2. Stigma distinct
  3. Central area with short, marginal striae

Symmetrical biraphid - Valves with protracted apices. A single, distinct stigma is present, placed relatively close to the valve margin. Short, marginal striae, or isolated areolae, at the central area.