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2. Stigeoclonium pachydermum Prescott (Pl. 1, Fig. B)

(Prescott, 1951, pg. 116, pl. 12, fig. 1-4, 9, 10)
Phylum: Chlorophyta

Class: Chlorophyceae
Order: Chaetophorales

Family: Chaetophoraceae
Genus: Stigeoclonium

Filaments much branched, erect, with numerous basal, downward projecting rhizoidal

branches. Branches in the upper portion irregularly. Branches in the upper portion irregularly
disposed and extremely varied in form, mostly alternate. Branches often developing from

short, barrel-shaped cells. Branches tapering to a blunt point. Cells in the main axis 19-20

µm in diameter and branches 15-16 µm in diameter.
Accession No. CTR00052

3. Stigeoclonium polymorphum (Franke) Heering (Pl. 1, Fig. D)
(Prescott, 1951, pg. 116, pl.9)

Phylum: Chlorophyta
Class: Chlorophyceae

Order: Chaetophorales

Family: Chaetophoraceae
Genus: Stigeoclonium

Filaments epiphytic, short and sparsely branched, arising from an extensive prostrate. Upright
branches ending in long tapering setae. Cells quadrangular in the basal portion, cylindrical in

the vertical branches. Cells 4-10 µm in diameter, 6-11 µm long.
Accession No. CTR00053

4. Chlamydomonas muscicola Korshikov (Pl.1, Fig. E)

(Prescott, 1951, pg.70, pl.46, fig. 20)
Phylum: Chlorophyta

Class: Chlorophyceae

Order: Chlamydomonadales
Family: Chlamydomonadaceae

Genus: Chlamydomonas
Cells unicellular, slightly elliptic to ovoid, attenuated to a blunt point anteriorly, broadly

rounded posteriorly. Two flagella arise from the papillae. Chloroplast a lateral plate with a

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