222 FLORA OP NEW ZEALAND. \_AlgtB. 



ticha, ramis nunc strictis virgatis confertis et crebre pinnatis nunc laxioribus curvatis et vage ramulosis, 

 ramulis linearibus basi vix angustatis obtusissimis erecto-patentibus elongatis alternis sparsisve, ceramidiis 

 ovatis magnis lateralibus sessilibus vel terminalibus. 



Var. /3 ; ramis strictis virgatis crebre pinnatis. 



Hab. Poveaux Straits. Var. /S. East side of the Southern Island, Lyall. 



Frond 4-6 inches long, filiform, as thick as a sparrow's quill, irregularly much branched, most of the divisions 

 distichous. Branches alternate or secund, distant or close together, either virgate and unbranched, but closely set 

 with alternate pinnse, or curved and distantly alternately compounded. Hamuli elongated, f-1 inch long, simple 

 or alternately ramulose, filiform, very obtuse, slightly constricted at the very base. Conceptacles of large size, ovate, 

 either on the ends or at the sides of the ramuli : in the latter case, sessile. Under a pocket-lens the articulated axis 

 may readily be seen, when the branch has not been subjected to strong pressure. It soon decomposes in fresh 

 water, and does not open well, so that the internal structure is not easily seen. 



2. GhoudYia, Jlagellaris, Harv. ; fronde purpurascente setacea filiform i e basi vage ramosa vel alternatim 

 decomposita, ramis elongatis parum divisis, ramulis sparsis insequalibus filiformibus acutis vel attenuatis basi 

 nee constrictis, ceramidiis ovato-globosis ore prominulo ad ramos majores sessilibus. 



Hab. Port Nicholson, Cook's Straits, and Paterson's Harbour, Lyall. 



Fronds densely tufted, as thick as a hog's bristle or thicker, branched from the base, twice or thrice alternately or 

 irregularly decompound ; the main branches elongate, subsimple, having a few lateral, erecto-patent ramuli. Ramuli 

 very unequal in length, long and short intermixed, laxly set, alternate or secund, filiform, acute. Colour a dull, 

 livid purple. Substance cartilaginous. Ceramidia rather large, sessile on the branches, ovate, with a prominent 

 orifice. Structure dense, but with an evident axial circle of cells. 



Gen. XXXVI. BYTIPHLJM, Ag. 



(J. Ag. in Linnaea, xv. 26. Harv. Ner. Austr. p. 81. Harv. Ner. Bor. Amer. pt. 2. p. 28. Phyc. Brit. t. 85, 



170, 220, 221. Kiitz. Sp. Alg. p. 844. Halopithys, Kiitz. Sp. Alg. p. 840.) 



1. Eytiphlaea pinastroides, J. Ag. Harv. Phyc. Brit. tf. 85. Halopithys pinastroides, Kiitz. Sp. Alt/, 

 p. 840. Pucus pinastroides, Turn. Hist. t. 11. E. Bot. t. 1042. 



Hab. New Zealand, Banks, fide Turner. (Native of Europe and Canary Islands.) 

 Probably some mistake. 



2. Rytiphlsea delicatula, Hook. fil. et Harv. ; fronde setacea tereti transversim pellucide striata dis- 

 ticha flabelliformi in parte inferiore ramulosa sursum pinnato-decomposita, ramis corymboso-fastigiatis extra 

 medium pinnatis bi-pinnatisve, ramulis alternis subulatis patentibus simplicibus versus apicem densioribus 

 compositisque, interstitiis striarmn diametro sesquilongioribus cellulis multangulis corticatis, axi tetrasi- 

 phonio, ceramidiis ovatis sessilibus sparsis. (Tab. CXII. D.) 



Hab. Dredged in five fathoms, D'Urville Island, and Blind Bay, Cook's Straits; also at Akaroa, 

 Lyall. 



Tufted, 2 inches high, flabelliform, distichously pinnate above the middle ; the pinnae corymbose, and in the 

 larger specimens once or twice decompound. All the divisions are margined with subulate, patent ramuli, closer 

 together towards the tips of the branches, and there alternately decompound. When examined with a pocket-lens, 

 the stem appears, articulated (as in Folysiphonia), owing to the thinness and transparency of the cortical layer ; but 

 the microscope shows that every part, even the youngest ramuli, is coated with accessory cellules. There are four 

 large tubes in the axis, surrounding a small central tube. Conceptacles ovate, sessile on the larger pinnse. — Plate 

 CXII. D. Pig. 1, plant, natural size ; 2, branch from the same; 3, a ramulus; 4, section of a branch; 5, a cerami- 

 dium : — -all more or It 



