. British ferns and their varieties. ar habitats to those 74 BRITISH FERNS tenanted by its near relative, the Black Maiden-hair Spleenwort (Asp. adiantum nigrum), from which it mainly differs in the nar-rower lance-shaped outline of itsfronds, and the somewhat differentcutting of its pinnae, which are moreregular in size. It does not lenditself easily to cultivation. It partakesa little of the tenderness of its constantneighbour Asp. marinum, and is farmore common abroad in warmerclimates. Fig. 32 represents only the tip ofa frond. It has not been generousin varieties, and although several are
. British ferns and their varieties. ar habitats to those 74 BRITISH FERNS tenanted by its near relative, the Black Maiden-hair Spleenwort (Asp. adiantum nigrum), from which it mainly differs in the nar-rower lance-shaped outline of itsfronds, and the somewhat differentcutting of its pinnae, which are moreregular in size. It does not lenditself easily to cultivation. It partakesa little of the tenderness of its constantneighbour Asp. marinum, and is farmore common abroad in warmerclimates. Fig. 32 represents only the tip ofa frond. It has not been generousin varieties, and although several arerecorded, it is so doubtful that themajority of them are still in exist-ence that we only mention microdon,which is a very fine and distinctform, imputed to Asp. marinum byMoore, and thought to be a hybridby others, though probably a merelyplumose sport of Asp. apparently fertile, the sporesappear to be aborted. A well-drained compost of peat, loam, and sand (2, 2, 1) is essential, coupled with a mild Fig. 32. Asp. lanceolatittn.{Tip of frond.) Asplenium Marinum (The Sea Spleenwort) (Plate VII) This species (Fig. 33) is very distinct from the other Spleenwortsby reason of the thick, leathery texture of its fronds, as also byits strict confinement to the cliffs and caves of our warmer coasts,
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1912
