SCOLOPENDRIUM. 
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fronds a very elegant curled or crisped appearance. This 
sort is barren, though there is an allied form less curled 
which produces the usual fructification. 
A curious and distinct variety is called polyschides, or 
angustifoliwn by some. The fronds of this are linear, and 
blunt at the apex, much narrower than in the common 
sort, and the margin is deeply and irregularly lobed and 
crenated. This sort is fertile, and its sori are short, and, 
instead of being ranged in a single series on each side the 
midrib, as is usual in the common sort, they form two 
irregular lines on each side. 
Another curious and very beautiful variety, called 
marginatum, is lobed in the same manner as polyschides, 
but has the fronds broader; it is remarkable in having, 
behind, a longitudinal excurrent membrane on each side 
between the midrib and margin, on which membrane, as 
well as exterior to ii, the short interrupted sori are pro¬ 
duced. This was found in Somersetshire, by Sir W. C. 
Trevelyan's gardener, Mr. Elworthy. Another beautiful 
form—fissum—is lobed like 'polyschides , but broader, and 
without the membrane present in marginatum. 
Another striking variety is multifidum. This has the 
fronds forked either near the apex or sometimes near the 
