Alge, by W. H. Harvey.) FLORA OF TASMANIA. 327 
membranacea, segmentis inferne semicostatis cuneatis, superioribus linearibus apice obtusis v. subacutis, 
cystocarpiis in sporophyllis subbinis. —Harv. Phyc. Austr. t. 89. 
Haz. Georgetown, W. H. H. Southport, C. Stuart. 
A smaller and much thinner and more membranous plant than E. obtusa, which in all other respects it nearly 
resembles. The apices are perhaps less obtuse. There are commonly two cystocarps on each fertile leaflet in the 
only fruiting specimen seen. 
Gen. XCIX. CHRYSYMENIA, J. 4g. 
(J. Ag. Alg. Medit. p. 105. Sp. Alg. ii. p. 209. Harv. Ner. Bor. Amer. ii. p. 187.) 
1. Chrysymenia obovata (Sond. Alg. Preiss. p. 29; Harv. Ner. Austr. p. 77; Harv. Phyc. 
Austr. t. 10).—Rhabdonia ? globifera, J. Ag. Sp. Aly. ii. p. 355? ? 
Haz. Stones at low-water mark, above Georgetown. 
Disrris. West and south coasts of Australia. 
I am at a loss to discover why Professor Agardh should have placed this plant in Rhabdonia, supposing that 
we are speaking of the same species. To me it seems nearly allied, not merely in habit but in structure, to 
Ch. wvaria. 
Gen. C. CHYLOCLADIA, Grev., J. Ag. 
(J. Ag. Sp. Alg. ii. p. 860. Harv. Ner. Bor. Amer. ii. p. 185.) 
1. Chylocladia clavellosa (Grev.; Harv. Man. p. 71; Phyc. Brit. t. 114; J. Ag. Sp. Alg. ii. 
p. 366).—Fucus clavellosus, Zurn. Hist. t. 30; E. Bot. t. 1203. 
Haz. Georgetown, rare, Gunn, W. Archer. Sullivan’s Cove, Dr. Lyall. 
Distri. Coasts of Europe from Norway to Spain. Falkland Islands. 
Gen. CI. HALYMENIA, 49. 
(J. Ag. Sp. Alg. ii. p. 197. Harv. Ner. Bor. Amer. ii. p. 192.) 
1. Halymenia ? saccata (Harv.); fronde rosea tereti (P) saccata succo repleta pinnatim v. bipin- 
natim composita, pinnis pinnulisque suboppositis simplicibus saccatis basi constrictis apice obtusis, 
tetrasporis sparsis, cystocarpiis in ramis immersis infra stratum periphericum suspensis. 
Haz. At Georgetown, Archer. 
Frond a foot long, and as much in the expansion of the branches, bipinnate, some of the pinnule furnished 
with a third series of pinnules. The main branches are nearly half an inch or sometimes more in diameter, the 
pinnule 2-3 lines; both are simple, saccate, much constricted at their insertion, and tapering upwards to a blunt 
point. Cystocarps suspended in a network under the exterior layer, which is composed of moniliform filaments, 
formed of minute coloured cells. Colour rosy-red. Substance delicately membranaceous. It most closely adheres 
to paper in drying, and appears to have been filled, when fresh, with abundance of loose gelatine. 
This bears so close a resemblance to Ohrysymenia Enteromorpha, Harv. Ner. Bor. Amer. ii. p. 187, and also 
to the "Bindera splachnoides of Western Australia, that, without microscopic examination of the structure of the 
frond, or by the fruit, these three plants cannot well be distinguished ! 
Gen. CII. NEMASTOMA, J. 4g.. 
(J. Ag. Alg. Medit. p. 89. Sp. Alg. ii. p. 162. Gymnophlæa, Kütz. 
1. Nemastoma Feredayæ (Harv.); stipite tereti ramosa (v. simplici), ramis in basi cuneata frondis 
cito deliquescentibus, fronde flabelliformi compresso-plana rosea repetite dichotoma, segmentis sensim 
