13 CRYPTOGAMIA ANTARCTICA. [Auckland and 
simple stems, destitute of branches, and merely clothed with patent subulate ramuli, rise from creeping filaments ; 
such individuals are from 4-1 inch high. But, when larger, lateral branches begin to be developed, in every respect 
similar to the main stem. In one specimen, 32 inches long, which alone is in fructification, the branches are 1-14 
inch in length. The variety 8 is a remarkable one, and possibly a distinct species, it is smaller and slenderer, with 
the branches much curved and the ramuli very generally secund. i 
Prare LXXVI. Fig. 11.—1, portion of a branch; 2, the same with ceramidia ; 3, section of stem; 4, cerami- 
dium; 5, spores: magnified. 
7. PoLYSIPHONIA decipiens, Mont. ; “ ceespitosa, fragilissima, filis cylindraceis subcontinuis fusco-nigris 
irregulariter virgato-ramosissimis, ramulis erectis, spinis subulatis spiraliter alternis strictis, articulis diametro 
multoties brevioribus ex siccatione collapsis 3-5-venosis; fructu .... ?” Mont. Prodr. Phyc. Antarct. p. 5. 
Voy. au Pole Sud, Bot. Crypt. p. 131. 
Has. Lord Auckland’s group. (Admiral D'Urville.) 
8. PoLxsIpHoNIA cladostephus, Mont. ; “filo primario articulato polysiphonio vage ramosissimo fusco- 
purpureo nigrescente, ramis conformibus e geniculis ramellos verticillatos dichotomos monosiphonios dense 
imbricatos emittentibus, fructu .... ?” Mont. in Ann. des Sc. Nat. (Nov. 1843), p. 39. Voy. au Pole Sud, 
Bot. Crypt. p. 132. t. 13. f. 4. 
Has. Lord Auckland’s group. (Admiral D Urville.) 
Apparently nearly related to P. dyssoides, Grev., and still more closely to P. byssoclados, Harv. (Grifithsia 
australis, Ag.) 
15. JANIA, Lamour. 
1. Janta Hombronii, Mont., Voy. au Pole Sud, Bot. Crypt. p. 146. 
Has. Lord Auckland's group; on rocks in the sea, abundant. 
What we take for Montagne's plant much resembles the Corallina officinalis, L.; we aré not, however, well 
versed in these vegetables, which have only recently been skilfully investigated by Decaisne. 
16. LAURENCIA, Lamour. 
1. Laurencia pinnatifida, Lamour.; var. y, angusta. Fucus Turn. Hist. Pue. vol. i. p. 40. 
Has. Lord Auckland's group; on rocks in the sea. 
17. DELESSERIA, Lamour. 
1. DELESSERIA crassinervia, Mont.; caule alato ramoso, foliis lineari-lanceolatis e costa valida proliferis, 
capsulis in costa sessilibus, soris spheerosporarum linearibus costz parallelis. D. crassinervia, Mont. Prodr. 
Phyc. Ant. p. 1. 
Haz. Lord Auckland's group and Campbell’s Island. 
We have some doubts as to the validity of this species, which differs from D. Hypoglossum only in the com- 
parative breadth of its costa; a somewhat inconstant character, being, at times, excessively broad, covering nearly 
the whole lamina, at others, nearly, if not quite, as narrow as in D. Hypoglossum. These intermediate forms do not 
exist among our Campbell’s Island individuals, but in those from the Falklands. 
2. DELESSERIA dichotoma, Hook. fil. et Harv.; costa crassa dichotoma frondem cuneatam obtusam v. 
emarginatam demum bifido-laciniatam percurrente infra apicem evanida, frondibus e costa denudata orien- 
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