] FLORA OP NEW ZEALAND. 219 



Fronds densely tufted, 1-2 inches high, not much branched. Stipites scarcely half an inch long, densely stu- 

 pose, widening into the base of a broadly flabelliform, undivided or vertically cleft frond ; the subdivisions flabelli- 

 form. The upper surface of the lamina is quite smooth, the lower almost wholly covered, except at the apices and 

 for a narrow space round the margin, with blackish-brown, velvety stupa. — This has the aspect of Z. multifida, and 

 is of the same size ; but is readily known by the dense velvety coating of the under surface. We are not acquainted 

 with Z. stuposa, J. Ag., which is said to be stupose on both surfaces ("utrinque"). 



Gen. XXIII. DICTYOTA, Lamour.— J. Ag. 

 (J. Ag. Sp. Alg. i. 86. Kiitz. Sp. Alg. p. 553. Harv. Phyc. Brit., etc.) 



1. Dictyota Kunthii, Ag., Ic. Ined. t. 15. J". Ag. Sp. Alg. v. l.p. 94. Hook. fil. et Harv. Lond. J. Bot. 

 v. 4. p. 530. Kiitz. Sp. Alg. p. 556. 



Hab. Abundant on the New Zealand coast, Lyall, J. D. H, Colenso, etc. (Native of Chili.) 



2. Dictyota dickotoma, Lamour. J. Ag. Sp. Alg. v. 1. p. 92. Kiitz. Sp. Alg. p. 554. Harv. Phyc. 

 Brit. t. 103. Ulva dichotoma, E. Bot. t. 774. 



Hab. Hawke's Bay, Colenso. Dredged in eight fathoms, Queen Charlotte's Sound, Lyall. (Native 

 of Northern Atlantic; Mediterranean; Eed Sea; Gulf of Mexico; and Cape of Good Hope.) 



Gen. XXIY. ASPEEOCOCCUS, Lamour. 



(Lamour. Ess. p. 61. Grev. Syn. p. 42. J. Ag. Sp. Alg. i. 74. Enccelium, Ag. Sp. i. 144. Enccelium et 

 Haloglossum, Kiitz. Sp. Alg. pp. 551-561.) 



1. Asperococcus sinuosus, Bory, /. Ag. Sp. Alg. v. l.jp. 75. HooJc.fil. et Harv. Fl. Ant. v. 2. p. 468. 

 Enccelium sinuosum, Ag. Syst.p. 262. Kiitz. Sp. Alg. p. 552. 



Hab. Otago, Lyall. Cape Kidnapper and Cape Turnagain, Colenso. (Native of South of Europe, 

 bays of Florida, Brazil, Cape of Good Hope, Mauritius, Eed Sea, New Holland, Falkland Islands.) 



Tkibe V. CHOBBABIACLM 

 Gen. XXV. SCYTOTHAMNUS, Hooh.fil. et Harv. 



(Hook. fil. et Harv. in Lond. J. Bot. iv. 531. J. Ag. Sp. Alg. i. 63. Kiitz. Sp. Alg. p. 546. Clwrdarice sp., J. Ag. 



Symb. p. 47.) 



1. Scytothamnus australis, Hook. fil. et Harv., Lond. J. Bot. p. 531. /. Ag. Sp. Alg. v. l.p. 64. Kiitz. 

 Sp. Alg. p. 547. Chordaria australis, J. Ag. Symb. v. l.p. 47. 



Hab. On tidal rocks, very common, Lyall, Colenso, J. L). H, Sinclair, etc. 



A most variable plant in ramification, sometimes nearly simple, sometimes excessively branched and bushy; 

 two to twelve inches long, or more. 



Gen. XXYI. CHOEDAEIA, Ag. 



(Ag. Sp. Alg. i. 164. J. Ag. Sp. Alg. i. 64. Kiitz. Sp. Alg. p. 546.) 



1. Chordaria sordida, Bory; caule indiviso brevi vel elongato lateraliter ramoso, ramis creberrime 



alternis sparsisve elongatis simplicibus nunc alterne ramuliferis villo elongato olivaceo-virescente velatis, 



filis periphericis elongatis viridibus cylindraceo-moniliformibus, articulis diametro vix longioribus, sporis 



ellipsoideis parvis. — Chordaria sordida, Bory, Coq.p. 139? Mesogloia Brasiliensis, Mont. PI. Cell. Exot. 



