26 
| ; thei is 4- ly as much as 
fluctuates between 24 and 50; their length is 4-8, rarely 
4 times the diameter ; their form is cylindrical, and they are slightly 
constricted at the septa. The sporangia originate from older inter- 
rangia 
beside each other, in which the greater portion of the zoospores had 
indeed which is also sometimes noticed in the Cladophora species * 
our country. e characteristics of this species may be ree P 
in the following diagnosis :—Cl. thallo minuto, 5-S8:mm. a eines 
basali simplicé et parte superiore ramosa constituto: ramis oles 
exeuntibus, brevioribus simplicibus, longioribus ramugeris, a 
the s £ F uch 
slightly constricted at the joints, 24-50 » thick, 4-8 rohis ais + hm 
as 14 times longer than the diameter; sporangia origi 
older intercalary cells.)” 
Hab.: Charley’s Gully, Lower Freestone Creek, Warwi 
water, Frank Pigram. 
(Plate VL, Fig. 7, 8, 9.) 
ure 
Size: Oospore, ‘07 mm. d 
P M lga was d “in 1 
fructification, but in a form somewhat more slender than that} 
with 50-120, according to the descriptions of other aut ors). 
broad, and 75-88 long; in their membrane may be geen 
fine stratification, but not three distinct layers.” Zealand. 
Kno om Europe, North America, and New- cca" 
subarticulata from Brazil ; probably it is generally distribub™ 
C a rs 
: : ; also t0 BO" 1g. 
Ms nger, pp. 492-3; and to the figures on the last-mentioned pages als 169, fs 
: na rs : ‘figs. 87 and 
and to Strassburger and Hillhouse Practical Botany, pp- 250-254, fi 
_ VOLYVOX, Erb. nad | 
? V. aureus, Hird. These are large spherical cells, SUPP hin 
a thick, smooth, colourless, often lamellate epispore, 
0 
mother cenobium, probably merel resting spores.—Wolle, 
Alge of U.S. of Amer, lee ge 
* 
< . 
it usually appears. The filaments are only 40 » thick (as co” The q 
, “60h 
Oogonia appear for the most part single; the eT ae pe ished 2 | 
Var. : : 
4 4 
jied in Df 
oTe.—The student is referred to the further anes ce, by age 
M uf | 
