Kg. 296. CLADOPHORA MACALLANA. 



Colour. A rich grass-green; fading in the herbarium. 



Substance. Eigid; bristling; adhering very imperfectly to paper. 



Character of Frond. Thread-like [filamentous); jointed; several growing 

 near together and entangled in intricate bundles; excessively branched. 

 Filaments as thick as hogs^ bristles throughout; irregularly set with 

 long^ very wavy, alternate or rarely opposite branches. Branches 

 re-branched in the same way; more or less clothed with short, 

 back-curved, very wide-spread branchlets, which are either simple, or 

 set on one side like a comb {pectinated) with a second set. Tips 

 obtuse. 



Joints. Twice or thrice as long as broad throughout; filled with rather 



dense-green colouring matter (endochrome) . 

 Measurement. From 6 to 20 inches long. 



Fructification. Minute seeds [zoosijores) formed of the colouring matter in 

 the joints; and in due time bursting through them. 



Habitat. West of Ireland. E-oundstone Bay, &c. On the sandy bottom of 

 the sea, in from four to ten fathoms^ water. Obtained by dredging, 

 or thrown ashore. 



Like G. redangidaris in general appearance; from which, however, its 

 pectinated, instead of opposite branchlets completely distinguish it. 



Fig. 297. CLADOPHOEA HUTCHINSI^. 



Colour. Bluish green, with changeable tints when fresh; fading in the 

 herbarium. 



Substance. Eigid; crisp; bristling; but more or less adhering to paper. 

 Character of Frond. Loose tufts of jointed threads {filaments) very much 



branched. Filaments as thick as hogs' bristles throughout; wavy; 



several times irregularly divided and branched. Branches distant; 



spreading; more or less furnished with short, slightly curved branchlets 



having a few secund, one-jointed branchletee^s along their inner face. 



Tips very obtuse. 



Joints. About twice as long as broad throughout; the partition-lines 

 {disse][>iments) contracted; filled with green colouring matter 

 [endochrome) . 



Measurement. From 6 to 8 inches long. 



Fructification. Minute seeds {zoospores) formed of the colouring matter in 



the joints, and in due time bursting through them. 

 Habitat. Bantry Bay. Isle of Man, and a few stations on our coasts. 



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