224 BENEDICT: NEW VARIETIES OF NEPHROLEPIS 
Smithi a five times pinnate form, Craigi (PLATE 10, FIG. 5; PLATE 
II, FIG. 6), has come, This form is particularly interesting as 
exemplifying what is at present the highest amount of leaf division 
that has been attained by these forms. Craigi is illustrated in 
the plate with Piersoni not as necessarily derived from this but 
in order to complete the possible series of division forms. In that 
plate Barrowsi has been omitted because I have not yet been able 
to get a mature leaf of it. 
As appears most noticeably on the plates illustrating these 
division forms, the increase in pinnation seems generally to be 
accompanied by a striking decrease in the size of the leaf, that is, 
in the total area. It is probable, however, that the actual leaf 
surface area remains the same, the apparent decrease being com- 
pensated for by the multiplication of the segments which may 
even expose more actual surface. 
4. Progressive increase in ruffling of the leaf 
(PLATE 13) 
The series showing progressive increase in ruffling or crisping 
of the leaf begins with the original species, N. exaltata (PLATE 
13, FIG. 1), because one of the characters in which var. bostont- 
ensis (PLATE 13, FIG. 2) departs from the typical NV. exaltata is 
in this feature. From var. bostoniensis there have been two more 
ruffled sports, Harrisi and Roosevelti, almost duplicating each 
other in appearance, but well distinguished as regards their prog- 
eny. PLATE 13, FIG. 3, may represent either Harrist or Roose- 
veltt, and PLATE 13, FIG. 4, may represent the variety Wm. K. 
Harris, or a codrdinate form of similar appearance derived from 
Roosevelti but unnamed. Both are alike in leaf characters in- 
cluding crisping of pinnae, and both represent the highest de- 
velopment of this character which has been obtained in a direct 
progressive series. It will be noted that with the increase in 
crisping there has come also a tendency to develop auricles on 
the pinnae. This is of interest because it is a feature character- 
istic of wild varieties of other fern species. 
The form described above represents the final sport so far 
obtained from the Harrisi line. From. the Roosevelti line, how- 
