BENEDICT: NEW VARIETIES OF NEPHROLEPIS 223 
increase in division also occurs in the frilled or ruffled series is yet 
to be determined. 
Of all the varieties of Piersoni, Barrowsi is perhaps of greatest 
interest because it has given rise to at least two further generations 
(vegetative) of division sports. From Barrowsi has come Whit- 
mani, a clear increase in division, and from Whitmani have come 
several sports showing still more division. 
Of the sports of Whitmani (PLATE 10, FIG. 3; PLATE II, FIG. 
3) named on the chart, Whitmani “improved” represents a more 
stable form, i.e. less given to reversion. Whitmani-compacta is a 
trifle smaller than its parent form, and has a fuller leaf with more 
expanded segments. Goodi and Gracillima (PLATE 11, FIG. 4; 
PLATE 12, FIG. 5) are apparently separate occurrences of the 
same variety, entirely thrice-pinnate, and with smaller segments 
than Whitmani. It may represent a dwarfing. Magnisica (PLATE 
10, FIG. 4; PLATE 11, FIG. 5) is clearly four times pinnate, and 
represents the greatest amount of division which can be definitely 
stated to have been evolved in this particular series. Elmsfordi 
(PLATE 12, FIG. 7), a reputed spore sport, looks much like a mini- 
ature Whitmani, being less than half its size. It is different in 
another particular, in that it produces a much greater number of 
leaves to each crown, and in a given size pot. A plant grown to 
full size in a four-inch pot may show as many asa hundred leaves. 
In a twelve-inch pan, an estimate of a thousand leaves appeared 
conservative. 
The other progressive sports in the Piersoni line are sufficiently 
described for the present by the typography of the chart and by 
the figures in plates 10-12. 
The other reputed bostoniensis sport from which further pro- 
gressive variations in the line of division are believed to have come 
is Amerpohli, a thrice- pinnate variety. Amerpohli in leaf division 
is very like magnifica, and in growth habit and carriage of the 
leaf it is also similar. | Because of this close resemblance it is more 
than reasonable to suggest that it may really have come from Whst- 
mani as a sport and that its reputed origin from var. bostontensis 
may be an error. From Amerpohli, the four times pinnate form, 
Smithi, is said to have come. There is some question as to the 
correctness of this assertion but none regarding the fact that from 
