246 



FLORA OE NEW ZEALAND. 



[Algae. 



Earn. Fl. Ant. v. 1. p. 186, v. 2. j». 474. /. 4?. % Alg. v. 2. j». 395. Kiitz. Sp. Alg. p. 883. Pucus 

 coccineus, Huds. Turn. Hist. t. 59. E. Sot. t. 1242. 



Hab. Common all round the coast ; many varieties. (Atlantic, Pacific, and Antarctic seas. Very rare 

 on east coast of North America.) 



2. Plocamium costatum, Hook. fil. et Harv., Alg. Tasm. in Lond. J. Sot. v. 6. p. 404. Harv. Ner. 

 Austr. p. 122. Kiitz. Sp. Alg. p. 886. /. Ag. Sp. Alg. v. 2. p. 403. Thamnophora costata, J. Ag. in 

 Linncea xv. p. 10. T. Cunninghamii, Grev. 



Hab. Bay of Islands, etc., common. (New Holland and Tasmania.) 



3. Plocamium procerum, Hook. fil. et Harv., Lond. J. Sot. v. 4. p. 542. Ner. Austr. p. 122. Tham- 

 nophora procera, J. Ag. in Linn. xv.p. 10. 



Hab. New Zealand, Lyall. (New Holland.) 



4. Plocamium corallorhiza, Hook. fil. et Harv., Lond. J. Sot. v. 4<.p. 542. Harv. Ner. Austr. p. 121. 

 J. Ag. Sp. Alg. v. 2. p. 402. Thamnophora corallorhiza, Ag. Sp. p. 225. Pucus corallorhiza et P. cir- 

 rhosus, Turn. Hist. it. 96, 63. 



Hab. Dusky Bay, Forster. (Native of Cape of Good Hope.) 



This locality requires verification. 



5. Plocamium angustum, Hook. fil. et Harv. in Lond. J. Sot. v. 6. p. 404. Harv. Ner. Austr. p. 122. 

 Kiitz. Sp. Alg. p. 885. J. Ag. Sp. Alg. v. 2. p. 402. Thamnophora angusta, J. Ag. in Linn. xv. p. 10. 



Hab. New Zealand, common, Colenso, etc. (Native of New Holland.) 



6. Plocamium abnorme, Hook. fil. et Harv., Lond. J. Sot. v. 4. p. 543. /. Ag. Sp. Alg. v. 2. p. 401. 

 Harv. Ner. Austr. p. 123. 



Hab. Bay of Islands, Lyall, J. L). IT. Maketu, Chapman. 



7. Plocamium cruciferum, Harv.; fronde costata angusta pectinato-pinnata, pinnis alterne geminis, 

 mferiore laciniisque superioris lineari-subulatis parum acutis integerrimis, sporophyllis axillaribus pedicellatis 

 tri-multilobatis cruciformibus vel palmatifidis lobis brevissimis oblongisve, tetrasporis numerosissimis. 



Hab. East Coast, Colenso. 



Scarcely to be known from P. angustum, except by the difference in the sporophylla, which here resemble com- 

 positions of Greek foliated crosses or trefoils ; sometimes, by excessive division, multiradiate. The lobes are short, 

 and the whole stichidium generally crowded with large tetraspores. Our New Zealand specimens of P. angustum 

 have sporophylla similar to those found on the original Tasmanian ones, and are larger than the present plant, with 

 shorter, more deltoid, and more acute ramuli. 



8. Plocamium dispermum, Harv. ; fronde costata angusta pectinato-pinnata decomposita subflabelli- 

 formi, pinnis alterne geminis, inferiore laciniisque superioris anguste subulatis acutis integerrimis, sporo- 

 phyllis axillaribus minutissimis decomposite ramosis ramis petiolatis ovatis oblongisve tetrasporas binas 

 foventibus, coccidiis supra-axillaribus sessilibus sparsis. 



Hab. Poveaux Straits, and Lyall's Bay, Cook's Straits, Lyall. East Coast, Colenso. 



Frond 6-12 inches long, i a line broad, stipitate, afterwards decompound, closely pectinato-pinnate, more or 

 less flabelliform. In the shape of the ramuli it resembles P. angustum, but the habit is different, and the form of 

 the sporophylla quite peculiar; each ovate, pedicellate lobe rarely containing more than two tetraspores, which are 

 of such large size as to fill the lobule. The ramification is most like that of P. abnorme, but the fruit is very 

 different. 



