Download PDF

io6
ZYGNEMATACEAE
22-26 /i.; spore wall yellow-brown, smooth, thickened, forming rounded
processes at the angles. (PI. XVIII, Figs. 4-5.)
From France to Czechoslovakia, and North Africa.
The figure published by Hansgirg is incorrect in that chromatophorcs
were drawn in the unoccupied halves of the gametangia.
67. MouGEOTiA THYLESPORA Skuja 1929. Actu Horti Bot. Univ.
Latviensis. 4, p. 48.
Vegetative cells 5-8 yu, x 25-80 /x; chromatophore with 4-8 pyrenoids
in a single row; conjugating cells geniculate; conjugation scalariform;
sporangia dividing both gametangia; zygospores cjuadrangular with
angles produced and truncate, 16-22/i. x 20-32 /x; spore wall yellowbrown,
scrobiculate, with tumid sides and rounded projecting corners;
aplanospores oblique-ellipsoid, i8-25At x 28.8-39.6/i. (PI. XVIII, Figs.
6-8.)
United States: Florida (Tiffany Coll.).
Estonia.
68. MoucEOTiA UBERospERMA W. & G. S. West 1897. ]our. Bot. 35,
P-37-
Vegetative cells 6-8 /i x 24-64 /x; conjugation scalariform; zygosporangium
dividing both gametangia; zygospores angular-globose
(4-6 angles), wall very thick and lamellate, smooth and colorless, with
corners extended into 4 solid, unequal processes which project into the
gametangia; zygospores 21-27 /u. in diameter, processes 3-1 /x 8 long;
aplanospores 20 /-i x 30/x with 2 processes. (PI. XVIII, Figs. 9-10.)
Africa, Angola and Kentani.
69. MoUGEOTIA CRATEROPHORA Bohlifl I9OI. Blh. Kgl. SvCtlsJ^
Vetensk,. A /{ad. Handl. 27, p. 50.
Vegetative cells 7-9M in diameter (8-14 diameters long); conjuga-
tion scalariform; zygospores in the conjugating tubes, or dividing one,
or both, gametangia; zygospores globose to ovoid, i8-22/i x 24-28 /t,
with 2 to 4 crateriform or retuse processes; spore wall brown, smooth.
(PI. XVIII, Figs. 11-14.)
Azores.
70. MoUGEOTIA IRREGULARIS W. & G. S. WcSt 1897. JoHV. Bot.
35, p. 38.
Vegetative cells 1 3.5-1 5 A^ x 70-90)11; conjugation scalariform; conjugating
cells more or less recurved; sporangium dividing both gametangia;
zygospores irregularly quadrate to trapezoid with concave
sides and thick walls, 38-63^^ x 42-48/11 including the processes, angles