March, 1922] BENEDICT — NEW VARIETIES OF NEPHROLEPIS 
Plate VII 
Regressive mutations: pinnae of leaves shown in Plate VI. 
Figs. 1-6, Represent respectively the same forms as shown in Plate VI, figures 1-6. 
Plate VIII 
Regressive mutations: leaves of forms showing reversion in size and in division. 
Fig. I. ''New York'' fern, a regressive mutation from Giatrasi (fig. 2;, introduced by 
George Giatras, West Hoboken, N. J. 
Fig. 2. Giatrasi, dwarf primary sport from hostoniensis. 
Fig. 3. Bostoniensis, for comparison to show intermediate size of New York fern. 
Fig. 4. Unnamed reversion, from dwarf once pinnate viridissima (fig. 5). 
Fig. 5. Viridissima, introduced by F. R. Pierson, Tarrytown, derived by reversion 
in division from twice pinnate superbissima (fig. 6). 
Fig. 6. Superbissima. 
Fig. 7. Unnamed reversion in size, but not in division, from superbissima. 
Plate IX 
Fluctuating reversion: bud plants showing unstable regressive variation. 
Figs, i, 2. Sister plants of an unstable strain of elegantissima-compacta. Fig. i, 
entirely once pinnate, except for a few pinnae on one or two leaves which show double 
division. Fig. 2, plant showing typical form of elegantissima-compacta. 
Plate X 
Fluctuation and mutation of elegantissima-compacta. 
Figs. 1-3. Pinnae from one leaf of elegantissima-compacta. 
Fig. 4. Pinna of ''Dwarf Boston,'' introduced by F. R. Pierson as a stable reversion 
from elegantissima-compacta. 
Fig. 5. Unnamed once pinnate mutation from Wanamaker (see figs. 13-18). 
Figs. 6-12. Pinnae selected to show range of fluctuation in an unstable strain of 
elegantissima-compacta (see figs, i, 2, PI. IX). 
Figs. 13-18. Pinnae selected to show range of fluctuation in Wanamaker, a regressive 
mutation of elegantissima-compacta introduced by Robert Craig, Philadelphia. 
