2o2 - BENEDICT: NEW VARIETIES OF NEPHROLEPIS 
parallel the differences apie between many wild species of ferns 
and flowering plants. 
12. The main difference between these variations and those 
shown by wild forms lies in the fact that these horticultural forms 
do not possess adaptability to natural conditions. In most cases, 
with the variation, has come decreased vigor of growth. 
13. The cause or causes of these variations are undetermined. 
They proceed as if from internal stimulation. The improved 
cultural conditions do not appear as causes, but rather as a means 
of preserving forms which, under wild conditions, would be elimi- 
nated by natural selection. 3 
E. INDEX OF THE SPORTS DESCRIBED ABOVE 
VARIETIES SHOWING INCREASE IN LEAF DIVISION 
ame cer 
ATS NORE eee ei a Lucias tie Dorchester, Mass. 
AE eG Pi ae ar Henry Barrows, Whitman, Mass. 
BMGrpOnW ley eae Edward peuacit Janesville, Wis 
DleRANTNGINS oo a ey F. R. Pierson, Tarr ’ 
egantissima-compacta............ F. R. Pierson, Tarrytown, N. y. 
Elegantissima “‘improved”.......... F. R. Pierson, Tarrytown, N. Y. 
NOMPMOR Sy 5 oils oi Pe kg ee George Giatras, West obeiee N. J. 
OOS a ee Ce eee ee Good & aves Springfield, Ohio. 
Grice a ae s, Whitman, Mass. 
RAs bk he BE Rahere ed Pélhaiel pide: Penn. 
vasina, oasis, Henry Barrows, Whitman, Mass. 
POU ee F. R. Pierson, Tarrytown, N 
PACPSONE F. R. Pierson, Tarrytown, N. Y 
MO ee eh diese tee: J. L. Schiller, hier Ohio 
CEG oe co a Herman Scholzel, New Gicrtants N. J. 
Scholzeli, three-pinnate sport........ Herman geese New Durham, N. J- 
WON a eos ee es John arrien ae er Botanic Garden, 
Washing a 
OR chi Oo i, Henry as Whitman, Mass. 
Whitmani compacta.............;.. Henry Barrows, Whitman, Mass. 
Whitmani “improved”. 2... ....... Henry Barrows, Whitman, Mass. 
oe sport, like Whitmani 
tee Ger Vee a ae George Giatras, West Hoboken, N. J- 
VARIETIES SHOWING PROGRESSIVE RUFFLING 
