Ser. Melanosperme/e. lam. lihodomelacece. 



Plate CCXXXII. 



KUETZINGIA CANALICULATA, Sond. 



Gen. Char. Frond flat, linear, pinnatifid, corticate, midribbed, and trans- 

 versely striate. Interior cells empty, uniseriate, tetraliedral, arranged 

 in transverse rows ; cortical layer thick, of many rows of minute co- 

 loured cellules. Ceramidia nvknown. Stichidia oblong, pedicellate, 

 rising from the transverse strise, containing tetraspores in a double 

 row. — KuETZiNGiA [Sond.], in honour of Prof. F. T. Kiitzing, the 

 celebrated author of ' Phycologia Generalis,' and other well-known 

 works. 



Trons plana, linearis, pinnatifida, corticata, costata, transversim striata. Cel- 

 lid(S interiores hyaline, imiseriata, tetrahedra, transversim ordinatce ; corti- 

 cales pluriseriata, minima, coloratce. Fruct. : 1, ceramidia {ignota) ; 2, 

 stichidia ohlonr/a, pedicellata, e striis transversis enata, tetrasporas diipUci 

 seriefoventia. 



KuETZiNGiA canallculata ; stipes long, naked, terete, simple or forked, 

 many-fronded ; fronds pinnatifid or sub-bipinnatifid, pinnoe and pin- 

 nule's broadly linear, channelled, with indexed edges, very slender 

 midribs, and rounded, concave apices. 



K. canallculata; stipite elongoto undo tereti simplicivel plus mimtsf urea to mnlti- 

 frondoso ; frondibus pinnatijidis v. snh-bipinnatifidis, pinnis piuuulisque late 

 linearibus canaliculatis Onarginibus injiexis) tenuisshne costulalis, apice con- 

 cavis obtusis. 

 KuETZiNGiA canallculata, Sond. in Bot. Zeit. 1845, p. 54. Fl. Preiss v. 2. 

 p. 184. Harv. Ner. Justr. p. 23. t. 9. Kiltz. Sp. Alg. p. 846. Harv. in 

 Trails. R. I. Acad. v. 23. jo. 538. Alg. Austr. Exsic. n. 130. 

 Rytiphlcea canallculata, Grev. in Edin. Journ. Nat. and Geogr. Scien. N. S., 

 V. 3. t. 4./. 1. 

 Hab. New Holland, Frazer. AVestern Australia, Preiss !, Mylne I King 



George's Sound and Fremantle, W. 11. H., G. Clifton, etc. 

 Geogr. Distr. West and south-west shores of Australia. 



Descr. Root a thickened conical tuber, half an inch or more in diameter. Full- 

 grown frond from 8 inches (In shallow water) to 2 feet or more (in deep 

 water) in height ; the older specimens dendroid, excessively branched and 

 bushy. Stem cylindrical, hard and stiff, zigzag, irregularly forked, 3-12 

 inches long or more, a line in diameter below, \ a line above. Fronds 

 springing from the sides of the stem and from the ends of its branches, 

 ovatein outline, either simply or doubly pinnatifid, sometimes almost fasci- 



