GEDOCONTUM 137 
151b. Var. rectangulare Rich. 
(Pl. LIII, figs. 496 and 497.) 
1925, p. 72, fig. I. 
Oospore quadrangular-ellipsoid, membrane thick, middle layer of 
spore wall with its pits in transverse and longitudinal rows (about 15 
transverse rows); idioandrosporous; vegetative cell 32-36 X75—400,; 
suffultory cell 5088—-155y; oogonium 5676-1054; oospore 48-56 x 
67—95u; androsporangium 27 X 15—36uy. 
England. 
Oe. concatenatum is unique among the poriferous, nan- 
nandrous forms of the genus for its prominently pitted oospore. 
F. hutchinsie and var. rectangulare are separable largely on the 
arrangement of the pits on the median layer of the oospore. 
152. Oe. huntii Wood. 
(Pl. XLVIII, figs. 465-468. ) 
1869, p. 333; Wittrock 1878, p. 136; Androgynia huniti Wood 1872, p. 197, Pl. 17, 
fig. 2: Hirn 1900, p. 208, Pl. XXXIV, fig. 213; Collins 1908, p. 57; P. B. A. No. 1471. 
Dioecious, nannandrous; oogonium usually 1, subglobose or sub- 
obovoid-globose (rarely subhexagonal), pore inferior; oospore globose, 
not filling oogonium, outer spore wall with four raised spiral ribs; basal 
cell elongate; terminal cells tapering, setiferous (consisting of 10 or 
more superimposed long cylindrical cells, each smaller in diameter 
than the one below); dwarf male nearly straight, on suffultory cell, 
antheridium exterior, 1-2 (?); vegetative cell 15-25 xX 36-82u; oogonium 
50-60 X52-60u; oospore 38-4238-42u; dwarf male stipe 1152u; 
antheridium 10 30u. 
United States: Massachusetts, Pennsylvania. 
Fruiting material showing the 4 spiral ribs has been seen only 
by Wood. Collins (1908) records the species showing the 
peculiar tapering setiferous terminal cells (see description 
above). This is the only species in the nannandrous group 
having ribbed oospores and an inferior pore. 
153. Oc. hispidum Nordstedt. 
(PI. XLV, fig. 440.) 
In Wittr. 1870, p. 128, and 1874, p. 28; Hirn 1900, p. 210, Pi. XX XV, fig. 215. 
Dioecious, nannandrous, gynandrosporous; oogonium 1, terminal, 
subellipsoid or ellipsoid-globose, pore inferior; oospore globose to 
globose-ellipsoid, not filling oogonium or rarely enlarging it, outer 
spore wall echinate; androsporangia 2; terminal cell obtuse; dwarf 
male a little curved, on suffultory cell, antheridium exterior, 1; vegetative 
cell 9-14>“36-130u; oogonium 35-4442-56u; oospore (with spines) 
32-39 X32-40u; androsporangium 10-126-8u; dwarf male stipe 
7-8 X 17-18u; antheridium 5-6 < 7-9u. 
France, Sweden. 
