Skip to main content

Table 1 Comparison of the morphological characteristics of Cyclotella choctawhatcheeana from Alchichica with other authors.

From: Morphological study of Cyclotella choctawhatcheeanaPrasad (Stephanodiscaceae) from a saline Mexican lake

 

Alchichica

Prasad et al. (1990)

Maidana omero (1995)

Carvalho et al. (1995)

Diameter μm

4.9–12

3.5–9.5

3–10

6.9–10.6

Striae per 5 μm

12–14

10–13

10

9–12

Marginal fultoportulae

every 2, 3, 4 costae

(7–14 per valve)

every 3 or 7 costae

(5–14 per valve)

every 3 or 7 costae

every 2, 4 costae

Number of satellite pores of marginal fultoportulae

2

2

2

2

Central fultoportulae

2, rarely 3

1, rarely 2–3

1–6

2–6

Number of satellite pores of central fultoportulae

3

3

3, occasionally 2

3

Marginal rimoportula

1

1

1

1

Central area of external view of valve

with tangential undulations and colliculate

with tangential undulations and colliculate

with tangential undulations and colliculate

colliculate

Silica granules in the marginal area of valve external view

with granules

with granules

without granules

with granules