Ser. lliioDosPERME/E. Fam. Sj)hairococcoidece ? 



Plate CLXIII. 

 PHACELOCARPUS LABILLARDIERI, /. J^. 



Gen. Char. Frond compressed, distichously pectinate or subterete, quad- 

 rifariously aculeate, formed of three strata surrounding a central arti- 

 culate filament or tube; medullary stratum of longitudinal, densely 

 interwoven filaments; intermediate of larger, roundish cells; cortical 

 of minute, coloured, vertically seriated cellules. Fruits of both kinds 

 external, pedicellate or sessile. Ctjdocarps (imperfectly known). Re- 

 ceptacles of tetraspores ovoid or globose, containing within nume- 

 rous cavities parietal zonate tetraspores mixed with simple parane- 

 mata. — Phacelocarpus {EndL), from <^aKeXo<i, a tuft, ovfascis, and 

 KapiTo<i, fruit : the fruit is club-shaped in the typical species. 



Frous compressa, dlstiche pectinata, aut teretiuscula et quoquoversum aculeata, 

 triplici strata tubnm articulatum centralem ambiente contcxta ; strata me- 

 dullari Jills lunyltudlnallbus deuslsslme intertextls, intermtdlo cellulls inajo- 

 ribus rotundatls, cortlcali cellulls mlnutls coloratls vertlcallter serlalls. 

 Fr actus utrliisque generis externl, pedlcellatl v. sesslles. Cystucarpla (vlx 

 nola). Receptacula tetrasporarum ovoldea v. globosa, in cryptls nu)uerosis, 

 infra pe^ipJieriam exsculptls tetrasporas zonatlm dlvlsas parletales inter para- 

 uemata uldulantes foveutla. 



Phacelocarpus Latjillardieri ; frond compressed, strongly midribbed, 

 pectinato-pinnate; pinnse subulate, flat, twice as long as the breadth 

 of the frond ; receptacles ovoid, pedicellate, axillary. 



P. Labillardieri ; fronde compressa elevato-costatapectlnato-phinata ; plunis subu- 

 latls plants latltudlne frondls duplo longiorlbus, receptaculls ovoldels pedlcel- 

 latls axlllarlbus. 



Phacelocarpus Labillardieri, /. Jg. Sp. Alg. v. 2. p. 648. Sand, in Linn. 

 V. 25. p. 690. Rarv. in Rook. fil. N. Zeal. v. 2. p. 242 ; Fl. Tasm. v. 2. 

 p. 313. Harv. Jig. Exslc. Austr. n. 304. 



EucTENODUs Labillardieri, Kiitz. Sp. Alg. p. 770. 



Ctenodus Labillardieri, Kiltz. Phyc. Gen. p. 407. t. 48./. 2, HooJc. Jit. et 

 Harv. Lond. Journ. Bat. v. 4>. p. 549. 



Pucus Labillardieri, Mert. in Turn. Hist. t. 137. 



SpHiEROCOCCUS Labillardieri, Jg. Sp.p. 296; Sgst. p. 230. 



Hab. In the Laminarian zone, and at greater depth. Common on the 



western and southern coasts of Australia, and in Tasmania. 

 Geogr. Distr. Australia. Tasmania. New Zealand. 

 Descr. Foot a broad disc. Frond 1-3 feet high or more, |-1 line iu diameter. 



