260 THE JOURNAL OF BOTANY 
of our plant. Again, some of the Mediterranean specimens from 
Marseilles and Naples areret — in size and 
Grateloupia prolongata J. s represented by Ferguson’s 
Ceylon Alga, no, 2 (but not by 5 ee s Tab. Phyc. xvii. tab. 24), 
resembles our plant in its horny consistency and the position of the 
cystocarps on frond and pinne, but differs in having pinne long and 
short —— pa fewer in number 
Gra’ ustraLis J. Ag. pad Bracebridge Wilson in 
Proce. ae Soe Wider, a pt. ii. 1892, p. 184 (nomen tantum 
F Cove, Sydney, July, 1901, no. 4, midwinter form with 
fruit and sterile; Milson’s Point, Port Jackson, January, 1904, 
no. 18, midsummer form with fruit and sterile. Both were collected 
y : 
obtained it as yet from the rocks in Sydney Havboer ine re 
water mark or thereabouts 
Geogr. Distr. Port Phi illip 
This species was scllecied by J. pace Wilson at Port 
Phillip in 1885, 1887, 1892, and 1898, and its name, given to it by 
J. Agardh in 1886, was published in Mr. Wilson’s List; in November, 
1892, but apparently has never been eee We have therefore 
endeavoured to compile from Mr. Wilson’s diversiform material in 
the British Museum a cossehyicn of Agardh’s spatita, as follows :— 
Frondibus breviter cuneatim stipitatis simplicibus vel e i 
adultiore palmatim egredientibus vel prolific satcbue _< om 
irregulariter lobatis, carnoso- -membranaceis, planis, late iimockatié 
vel oblongis, apice obtusis vel acutis vel acuminatis, margine sepe 
a ndulato hine illine prolificante. Cystocarpia desunt. 
Agardh’s specimens appear to be most nearly allied to G. 
Cutleria Kiitz., from the Pacific shores of South America, being 
somewhat similar in structure, and even in habit, but the fronds in 
Agardh’s species are much more irregularly divided, and never have 
the linear elongate outline often assumed by G. Cutleria, nor such 
long narrow — as are depicted by Kiitzing in Tab. Phyc. 
xvil. tt. 35, 836; moreover the proliferations are much less frequent 
and more locally restricted on the thalline margin. Bracebridge 
Wilson’s four specimens are so different in outline : from one another 
that it is difficult to > combine them in one description. The largest 
of them 1 i. _ 25 cm. long, and about 5 cm. wide, but one short 
frond is wide. 
r, tomas specimens, which me cares disregarded when 
drawing up the above pee ten se uch more divided than the 
type-plants, and are still m 2 dread een, The = bear plentiful 
proliferations of all sizes, saa rarely maintain a: sede margin. 
lt is difficult to recognize any tangible difference anes the mid- 
winter and midsummer forms. The fruits occur at both these 
re co 
We do not know whether Agardh had any fruiting material. The 
gelatinous substance of the thallus ~— swells up in water, and 
so adds to the difficulty of making careful comparisons of the 
structure to be observed in transverse pe but the structure 
