\
P:
MaU CLXXilL.
A .
^ ^ ^ y a a s s a s o e *wirtT<6
B .
€ .
V ^ .H .H . d e l e t l i t R . Tlepve. 15671111111 fcReevB
Ser. ChlohospbkmbyE. • 'Sam. Nostochinea.
P l a t e CLXXIII. A.
SPHiEROZYGA BROOMEI, Yto. JfNN.
G e n . O h a e . Mlaments free, simple, moniliform, co n sis tin g of a series of
o rd in a ry cells, in te rru p te d h e re a n d th e re by a cell of a different k in d
{connecting cell or heterocyst). Spores formed from th e ordinary
cells. SphjEEOzyga [Ag.),— from afimpa, a sphere, and[^®yos, a j
Sph ,eeozyga Broomei; “ spores numerous, elKptical, twice as long as
wide, not much exceeding in width the ordinary cells, commencing to
be formed from the ceUs nearest the connecting cells; connecting
ccUs smooth, subqnadrate, rather longer than wide.”—Thw. MS S .
H ab. On dead leaves of Myriophyllnm, &c., in a brackish ditch at Shire-
hampton, near Bristol. June. M r. G. B. Broome-,. M r. G. I I . K.
Thwaites.
“ A very distinct species, first detected by G. E. Broome, Esq.,
an excellent Cryptogamic botanist, after whom it is named.”—
Thwaites.
K g . A . Filaments of S p ii/e ro z y g a B ro om e i :— magnified 230 linear.
P l a t e CLXXIIL B.
SPHyEROZYGA BERKELEYANA, Thw. m s s .
SpHjEEOZyga 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 sph®-
roidal, slightly compressed. Young filaments included, one or several
together, in a defined, mucous sheath.”—Thw. MSS.
H ab. Scattered amongst the filaments of Conferva fra c ta , k c ., in a brackish
ditch at Shirehampton, near Bristol. June. Mr. 0 . H . K.
I -I
if
.J l
■fo'
i ' l
it;
d .[,1
I
'
“ Tbis 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
■V'
i 'li