50 Veir Brecuer WITTROCK. 
Affinities and Differences. This species does not seem to be very nearly 
related to any of the others in the same group. It is nicely distinguished from 
both P. equalis nob. and P. kewensis nob. by 1:0 its cylindrical or almost eylin- 
drical and particularly long spores and 2:0 by slighter ramification. From P. 
equalis nob. especially it differs by longer vegetative cells, and from P. kewcnsis” 
nob. by much greater dimensions. 
2. Pithophora eequalis nob. 
Diagnosis: Principal filament of the cauloid part of the thallus 
in fertile specimens on an average 102 yw thick, either with branches of 
two degrees, those of the first few and long, those of the second short, 
or with branches of only one degree, these numerous and short; spores 
single, inclosed in the principal filament or in the branches of the first 
degree, more rarely terminal; the inclosed spores cask-shaped with 
somewhat rounded ends, on an av. 111 w thick and 250 uw long; the 
terminal spores cask-shaped with the upper end conical and the top 
somewhat rounded, on an av. 98 w thick and 288 w long; the rhizoid 
part of the thallus as a rule rudimentary. — Plate 1, figs. 4—7. 
[P. validior et longior, filo principali partis thalli cauloideze speciminum fer- 
tilium circa 102 w crasso, ramos, solitarios, aut numerosos breviores omnes primi 
ordinis, aut paucos longos primi ordinis ramulis brevibus secundi ordinis preeditos 
emittente; sporis solitariis in filo principali vel in ramis primi ordinis inclusis, 
rarius terminalibus; sporis inclusis paullum tumidis, oreuleeformibus, apicibus sub- 
rotundatis, e:a 111 w crassis et 250 w longis; sporis terminalibus orculeeformibus 
sursum brevi-acuminatis, apice rotundato, ¢:a 98 w crassis et 288 «w longis; parte 
thalli rhizoidea plerumque obsoleta.| 
Locality. This species is found by Mr GOLLMER in small ponds on rocks 
near La Guayra in Venezuela!). The specimens which I have examined have been 
communicated to me by D:r A. GRUNOW under the name of Cfadophora Rocttleri var. 
General Description. Fertile specimens. Cauloid part: As to the rami- 
fication we may in this species distinguish two types: one distinguished by few but 
long branches of the first degree, which generally carry short ones of the second 
degree (pl. 1, fig. 4), and one by numerous but short branches of the first degree, 
which remain unbranched. Connecting forms are found, though rare. The branches 
are always single, one on each supporting cell. Rather often numbers of them are 
unilateral. As usual in this genus they are attached somewhat.below the top of 
the supporting cell. This distance is in general shorter than the diameter of the 
supporting cell. Branchless cells are more common in this species than in any 
other. Besides the top cells and the supporting cells of the spores, the spores 
1) The locality was thus given on the labels: »Aus den Gebirgsbassin La Guayra 
und zwar aus kleineren Wasseransamlungen auf Felsen.» 
