






BRITISH ЕЕКМ5 

Fig. 307. S v. spirale. 
SPIRALE (Fig. 307).—Found in several places ;. a dwarf, undulate 
form, twisted like a corkscrew, and with very thick, leathery fronds ; 
really a very congested, undulate form of the species. 




Fig. 308. 5. 2. sub-cornutum. Fig. 309. S. 2, supra-lineato-multifidum 
STANSFIELDII (Plate XXXVIII).—A splendid form raised from 
spores of S. v. undulatum rigidum (see Fig. 314) ; fronds frilled and 
fringed, a most unexpected result from such a source. 
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