254 



FLORA OP NEW ZEALAND. 



\_Alga. 



Gen. LXXXII. DASYPHLCEA, Mont. 

 (Mont. Voy. Pole Sud, p. 100. J. Ag. Sp. Alg. ii. SIS.) 

 1. Dasyphlcea insignis, Mont., PSle Sud, p. 102. t. 8./. 3. Kiitz. Sp. Alg. p. 757. /. Ag. Sp. Alg. 

 v. %.p. 215. 



Hab. Akaroa, D'Urville. 



Gen. LXXXIII. DUMONTIA, Lamour. 

 (J. Ag. Sp. Alg. ii. 348.) 

 1. H-amoTiti&fiUformis, Grev., Alg. Brit. p. 165. t. 17. Haw. Phyc. Brit. t. 95, et Sup. t. 357. /. 

 Ag. Sp. Alg. v. 2. p. 350. Hook. fil. et Harv. Fl. Ant. v. I. p. 189. 



Hab. Tidal rocks, Tuingara, near Cape Turnagain, Colenso. (Native of Europe.) 



Gen. LXXXIV. CATENELLA, Grev. 

 (Grev. Alg. Brit. p. 166. t. 17. J. Ag. Alg. Medit. p. 89 ; Sp. Alg. ii. 351. Kiitz. Phyc. Gen. t. 76. f. 4. 

 Harv. Ner. Bor. Amer. pt. 2. p. 201.) 

 1. Catenella Opuntia, Grev., Alg. Brit. p. 166. Harv. Phyc. Brit. t. 88. J. Ag. Sp. Alg. v. 1. p. 352. 

 Kiitz. Sp. Alg. p. 724. Fucus Opuntia, Turn. Hist. t. 107. 

 Hab. Bay of Islands, /. B. H. (Native of Europe.) 



Gen. LXXXY. PBIONITIS, J. Ag. 

 (J. Ag. Sp. Alg. ii. 185. Harv. Ner. Bor. Amer. pt. 2. p. 197.) 



1. Prionitis Colensoi, Hook. fil. et Harv.; fronde plana iato-lineari nigrescente vage subpinnatim com- 

 posita, ramis suboppositis patentibus basi angustatis extra medium dilatatis margineque eroso-dentatis vel 

 fimbriato-lobulatis, lobulis apice denticulatis vel simplicibus insequalibus crebris, apicibus obtusis axillisque 

 rotundatis. (Tab. CXX. A.) 



Hab. Rocks near Cape Turnagain, Colenso. 



Fronds 6-8 inches long, \ inch broad, branched from the base, irregularly pinnate. Branches 3-4 inches long, 

 flat, opposite or irregular, narrowed below, dilated beyond the middle, and thenee linear-oblong, obtuse or somewhat 

 attenuated. In the lower part the margin is simple, above it is fimbriate or lacero-dentate, the lobes minute, 1-2 

 lines long, denticulate at the dilated apex. Structure as in the genus. Fruit unknown. Colour, when dry, very 

 dark brown, or nearly black. Substance rigid. — It does not adhere to paper in drying. — Plate CXX. A. Pig. 1, plant, 

 natural size ; 2, section of the frond, 



Gen. LXXXYI. NBMASTOMA, /. Ag. 



(J. Ag. Alg. Medit. p. 89 ; Sp. Alg. ii. 162. Gymnophlcea, Kiitz.) 

 1. Nemastoma (Arseotes) intestinalis, Harv.; fronde succosa (strato medullari laxissimo) compresso- 



tubulosa lineari vage ramosa, ramis intestinBeformibus simplicibus furcatisve basi constrictis apice attenua- 



tis acutis, favellis per totam frondem sparsis plexu denso filorum circumdatis. 

 Hab. On rocks, Preservation Harbour, Byall. 

 Fronds 6-8 inches long, -J-i inch wide, compressed <?), cylindrical, divided irregularly into three or four 



simple or once-forked branches, which are constricted at their insertion, and taper to an acute point, sometimes 



tipped with a pair of mucrones, which probably lengthen into branches. Substance very thin and delicate, full of 



