30 HENRIK PRINTZ [1920 
the exceeding variability of this species. Thus, fig. 226 shows a 
thallus where one end has been formed by nearly spherical cells, 
and how the cells, towards the other end of the filaments, gradually 
pass into nearly eylindrical ones. Gametangies were also frequently 
to be found in this sample, being of the same bottle-shape peculiar 
to Tr. lagenifera (fig. 221, 222). At times they are also to be seen 
with a total absence of a beak (fig. 223.) Such specimens are 
exceptions, however. 
I addition to the species of Trentepohlia mentioned here, I have 
also found a couple of others. On account of the insignificani 
material, and because I have not seen particularly characteristic 
stages, I have not been able to determine them with sufficient eer- 
tainty, but for the sake of completeness I mention here: 
? Trentepohlia dialepta (NyLanDEr) Harior, Notes sur le genre 
Trentepohlia (Journ. de Botanique, 1889—90) p. 23, Fig. 10; De 
WIirLDEMAan, Notes sur quelg. esp. Trentepohlia (Annales Soc. belg. 
microscopie 1894) p. 23, PI. III, Fig. 8—11. 
In one sample collected south of the Whaling Station at Bluff, 
(mo. 28) I have observed specimens of Trentepohlia that seem to 
agree very well with T. dialepta. The cells are + 8 u broad, and 
2—4 times as long, with globose gametangies. The material is too 
sparse and incomplete for a reliable decision, however. | 
? Trentepohlia ellipsiocarpa SCHMIDLE, var. africana SCHMIDLE, 
Beitr. z. Algenflora Afrikas (Engl. bot Jahrb. B. 30, 1901) p. 638, 
Tab. II, Fig. 8—10. [PI]. VI, Fig. 229—2321. 
Specimens probably belonging to this one I have observed in å 
sample of bark collected near Bluff (no. 133), where it occurs very 
sparsely, though. The cells are 3,5—4 u broad, only a little longer 
than broad, thin-walled and slightly inflated. The apical cell is 
acuminate. The gametangies are ovoid, 12—12,5 u long and 6,5—8,5 
u broad. 
Phycopeltis arundinacea (Monrt.) De Tonr, Ueber Phyllactidium 
(1889); Syll. Alø. I, p. 15. [P1. XI, Fig. 290—2941. 
This species is very common and oceurs in nearly natural pure 
cultures in samples from the environs of Durban (nos. 84 and 1163 
as also from Saldanha Bay (mos. 381, 384, 387, and 394). It oceurs 
here epiphytic on the stems of various woodened species of grass, 
probably bamboo, on the hard, smooth and silicate surface of which 
it forms a very characteristic coating of a dull greyish-green colour 
(when dried). 
The individual discoidal thalli are easily seen even with the 
naked eye; they form nearly orbicular, sharply circumseribed dises 
