Ser. RHODOSPERME. Fam. Corallinacea. 
Puare CCLXIII. 
MASTOPHORA CANALICULATA, Zarv. 
Gen. Cuar. Frond stipitate, thinly incrusted with calcareous matter, flat, 
flexible, foliaceous upwards, flabelliform or dichotomously branched 
and fastigiate. LMructification: 1, conceptacles hemispherical, sessile, 
scattered over the whole frond, and containing in the base of the 
cavity a tuft of erect, oblong, at length four-parted spore threads.— 
Mastopnora (Dene.), from waotos, a nipple, and gopew, to bear. 
Frons stipitata, tenuiter calcarea, plana, flevilis, superne foliacea, flabelliformis 
v. dichotomo-fastigiata. Fruct.: 1, ceramidia hemispherica, sessilia, per 
totam frondem sparsa, apice poro pertusa, in fundo loculi fila sporifera fasci- 
culata erecta demum zonatim quadripartita foventia. 
Mastopnora canaticulata ; frond narrow-linear, dichotomo-multifid, fas- 
tigiate ; laciniee lmear or subcuneate, with involute margins, chan- 
nelled concolorous and glabrous on the lower side; ceramidia scat- 
tered. 
M. canaliculata ; fronde anguste-lineari dichotomo-multifida fastigiata, laciniis 
linearibus v: subcanaliculatis margine involutis, subtus canaliculatis concolo- 
- ribus glabris, ceramidiis sparsis. 
MastopHora canaliculata, 7. Tasm. v. 2. p. 310. Harv. Alg. Austr. Exsic. 
No. 443. 
Has. Port Fairy, W.H.H. Macdonnell Bay, Rev. J. F. Wood. Tas- 
mania, C. Stuart. 
Groer. Distr. South coast of New Holland. Tasmania. 
Descr. Root an expanded incrustation on rocks and stones. Frond 3-4 inches 
high, and as much in expansion, somewhat flabelliform in outline, many 
times divided from just above the base, dichotomous or irregularly multi- 
partite, the lacinice scarcely more than a line or two in breadth. Lacinie 
multifid, the lower ones exactly linear, the uppermost somewhat cuneiform, 
all with strongly reflexed or revolute edges, so as to form a channelled 
frond. Both surfaces are of the same colour and glabrous. The apices 
are slightly expanded, and obtusely truncate. Ceramidia nipple-shaped, 
scattered over the upper and middle segments, spore-threads linear oblong, 
zonately 4-parted. Colowr a dull purplish red, becoming browner when 
dry, not in the least glaucous on either side. Sudstance calcareous, but 
flexible and somewhat tough, rigid when dry. 
