Ser. RuoposPpeRMEs. Kam. Cryptonemiacee. 
Puate CCLIX. 
GLOIOSACCION? DIGITATUM, Zan. 
Gen. Cuar. Mrond bag-like, filled with transparent gelatine, membrana- 
ceous, composed of three strata; the medullary stratum of very large 
gelatinous cells, soon ruptured ; the intermediate of roundish-angular, 
coloured cells ; the cortica/ of minute cellules set in vertical filaments. 
Fructification : 1, globose favellidia immersed in the cells of the in- 
termediate stratum, and composed of numerous confluent nucleoli ; 
2, tetraspores (not known) ?—Guotosaccton (Harv.), from yAovos, 
viscid, and cakkos, a bag or sack. 
Frons sacciformis, succo gelatinoso hyalino repleta, membranacea, stratis fere 
tribus contexta ; strato medullari cellulis mawximis gelatinosis cito ruptis, in- 
termedio cellulis rotundato-angulatis coloratis, corticali cellulis minimis in fila 
verticalia ordinatis constante. Fruct.: 1, favellidia globosa, in strato inter- 
medio immersa, nucleolis pluribus confluentibus composita ; 2, tetraspora ? 
Guotosaccion digitatum ; frond shortly stipitate, plano-compressed, pal- 
mato-multifid, fastigiate; laciniee subdichotomous, with wide rounded 
axils, tapering to an obtuse point. 
G. digitatum ; fronde breve stipitata plano-compressa palmato-multifida fas- 
tigiata, laciniis subdichotomis, superioribus lanceolatis obtusis, axillis rotun- 
datis. 
HALyMENtIa ? digitata, Harv. Alg. Austr. Exsic. No. 436. 
Has. Dredged in Port Jackson, C. Moore, W. H. H. 
Groear. Distr. East coast of New Holland. 
Descr. Root a small disc, 2-3 lines in diameter. Frond 6-12 inches long, or 
more, and as fully much in the expansion of the lacinize, broadly cuneate or 
flabelliform at base, but deeply divided palmately into 4-5 principal seg- 
ments, which are twice or thrice dichotomous or irregularly multifid. The 
whole frond is strongly compressed, or nearly plane, and the lacinie have 
an average width of about 1 inch or 13 inches in full-grown specimens. 
The axils in all parts are wide and rounded ; the lower laciniz are broadly 
linear-cuneate, the uppermost more or less lanceolate, tapering to an ob- 
tuse or subacute point. No fruit has been observed. The colour is a rosy- 
red, which is soon discharged in fresh water. The substance is gelatinoso- 
membranaceous, and in drying the frond adheres most closely to paper. 
LO eee - 
