Fig. 43. PUNCTARIA PLANTAGINEA. 



Colour. Brownish- olive; often full brown. 



Substance. Tougli^ though membranaceous. Sub-opaque. 



Character of Frond. A leafy expansion; flat; ribless; more or less pointed 

 {lanceolate) ; tapering gradually to the base from near the middle of 

 the frond. 



Measurement. From 4 to 12 inches long; from \ to 1\ inches wide. 



Fructification. Oblongs largish groups of seeds {spores) scattered over both 

 surfaces of the frond. 



Habitat. Our coasts generally. On rocks, &c., between tide-marks. Not 

 uncommon. 



Sometimes confounded with Laminaria fascia. But the Laminaria is more 

 glossy; adheres less firmly to paper; and its texture, when examined through 

 a microscope or lens, is seen to be much more close and compact than that of 

 the Pimctaria, which has a comparatively loose, reticulated (net-like) structure. 



Fig. 44. ASPEROCOCCUS COMPRESSUS. 



Colour. A yellowish, or olive-green. 

 Substance. Tender; membranaceous. 



Character of Frond. A leafy expansion; compressed; ribless; narrow; tapering 

 near the base into a hair-like stem, occasionally contracted at intervals 

 as if drawn in. 



Measurement. From 6 to 18 inches long; from J to 1 inch wide. 



Fructification. Oblong, irregular clusters of seeds {spores), scattered over 

 both surfaces of the frond. 



Habitat. South of England. Oast up from deep water. Kare. 



Formed of two membranes, close-pressed and adhering. A species interme- 

 diate between Ptmctaria and the more characteristic As])erococci, which are 

 tubular and inflated. 



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