138 
THE FERN FAMILIES OF BRITAIN. 
be impossible to convey the differences clearly in writing. 
We therefore merely mention the names under which the 
best simple forms are known, and, as nearly as we can, in 
order of merit. Wills (10) is magnificent. 
S. V. crispum, Mrs. Stabler. Distinct, having very long 
stalks and pointed fronds; tall, bold grower. 
S. V. crispum iimbriatum (fringed), Stansfield (9). A 
really splendid form, in which the frills are beautifully fringed. 
This is the offspring of a very inferior form (undulato-rigidum), 
the spores of which generally yield a proportion of this variety 
among the plants produced. 
S. V. crispum iimbr. cristatum (crested). A crested 
form of last-named variety. 
S. V. crispum, Stansfield, Roundstone. Broad, slightly 
fringed fronds. 
S. V. crispum diversifrons (variable-fronded). Fronds 
variously shaped, often with long, basal lobes, like arrow-barbs. 
S. V. crispum multifidum (much-cleft). Syn. maximum, 
Kitson. A very bold grower, with many pointed crests ; very 
fine indeed. 
S. V. crispum sagittatum (arrow-headed) (2). A narrow 
form of crispum, with long, pointed basal lobes. 
S. V. cristatum (crested). There are a great many slightly 
different forms to which this name properly applies, the crests 
v^arying only in character and size. 
S. V. cristatum, Millett (4), is specially fine. 
S. V. cristatum, Riall. A very fine form. 
S. V. crist. viviparum (viviparous), O’Kelly. A very 
singular wild find in Ireland, which has short, squarish, pointed 
lobes on base of fronds, which are pinched up slightly in the 
centre, just below a neat, semicircular crest. Its great 
peculiarity consists in the formation on the upper surface, 
under close treatment, of numerous warty ridges, which 
develop into clusters of tiny plants. With us it is rather 
tender. A unique curiosity, and pretty. 
S. V. Cousensii (J. Schott Cousens’). A wild find, of very 
remarkable character, the fronds being repeatedly branched, 
a la Wardii, but forming very much larger, rounded heads 
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