Ser. CHLOROSPERME&. . Fam. Nostochinea. 
Puate CLXXIII. 2A. 
SPHAROZYGA BROOME], Zw. ss. 
Gen. Cuar. Filaments free, simple, moniliform, consisting of a series of 
ordinary cells, interrupted here and there by a cell of a different kind 
(connecting cell or heterocyst). Spores formed from the ordinary 
cells. SpuHmrozyGa (4g.),—from odapa, a sphere, and vyos, a yoke. 
SpuarozyGa Broomei; “spores numerous, elliptical, twice as long as 
wide, not much exceeding in width the ordinary cells, commencing to 
be formed from the cells nearest the connecting cells: connecting 
cells smooth, subquadrate, rather longer than wide.”—Zhw. MSS. 
Has. On dead leaves of Myriophyllum, &c., in a brackish ditch at Shire- 
hampton, near Bristol. June. Mr. G. EH. Broome; Mr. G. H. K. 
Thwaites. 
nnn ~~ 
“A very distinct species, first detected by G. E. Broome, Esq., 
an excellent Cryptogamic botanist, after whom it is named.”— 
Thwaites. 
Fig. 4. Filaments of SpH#RozyGa BRrooMEl :—magnified 250 linear. 
Prats CLXXIII. B. 
SPHAROZYGA BERKELEYANA, zw. uss. 
Spu#rozyea Berkeleyana; “ Spores large, twice the width of the ordinary 
cells, oblong, half as long again as wide, becoming brown when 
mature, generally two on each side the connecting cell, which is sphee- 
roidal, slightly compressed. Young filaments included, one or several 
together, in a defined, mucous sheath.”—Zhw. MSS. 
Has. Scattered amongst the filaments of Conferva fracta, &c., in a brackish 
ditch at Shirehampton, near Bristol. June. Mr. G. H. K. Thwaites. 
RRP I 
“'Phis fine species, which is named in honour of Rev. M. J. 
Berkeley, is interesting from the circumstance of its filaments, 
when young, being enclosed, often several together, in definite, 
gelatinous sheaths, out of which they appear to escape before the 
spores are mature. There are other species, occurring in fresh 
