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form rather undulated has been found by Mr. R. Bloxam, 
in the Isle of Wight. Mr. Clapham has sent a similar dwarf 
almost barren form, in which only a portion of the fronds are 
furnished with the marginal toothing; they are also somewhat 
cuneately decurrent at the base; this is from Wharfe, near Settle, 
Yorkshire. [Plate LXXXIV A.] 
30. interruptum (Woll.). This is a beautiful and perfectly dis- 
tinct variety, remarkable for the variations of form to which it is 
subject. The fronds are narrow but fleshy, the taller ones nearly a 
foot long, including the stipites, and about half an inch wide for 
the greater part of their length, the narrowed portion being sub- 
lobate and dentate; the base is subtruncate, and the apex normal, 
attenuate, about an inch wide, with a shiny somewhat rigid sur- 
face; in the lower narrowed or contracted part are interrupted 
portions varying from half an inch to an inch in length, in which 
the costa is quite bared. Some fronds, somewhat shorter than 
these, are entirely contracted, with the margins wavy, and the base 
very unequal. Others are reduced to four or five inches long, 
entirely contracted, with long bare portions of costa, which is in 
these parts quite terete and smooth, and bearing a long horn from 
the upper surface. Its chief peculiarity is the interrupted lamina; 
and it has some resemblance in form to the laciniatum forms of 
sinuatum (45), only it is much narrower and more fleshy. It was 
found in the county of Dublin by Dr. Kinahan. 
9l. epiphylloides. (M.). This is a curious form, its fronds resem- 
bling the truncated branches of some species of epiphyllum. The 
fronds are eight or nine inches high, the base subcordate, and the 
margin of the lower part irregularly lobate; two or three inches 
upwards the fronds become suddenly contracted, so that the 
lamina is reduced almost to the costa; it then swells out again 
forming another length, which is also truncately contracted at the 
upper end in the same way as the first, and tapers downwards in 
a wedge-shaped manner, the margin being more or less lobed; 
in the fronds before us there is a third terminal portion con- 
tracted at the base and broader upwards, the apex of which is. 
obtusely rounded and sublobate. It is not fertile. This was found 
near Whitby, Yorkshire, by Mr. W. Willison. 

