OF ASPIDIEAE 133 
limitations combining all the genera of this series into Aspidinm 
and Phegopteris, the former containing the indusiate and the latter 
the non-indusiate species regardless of vein characters or habit. 
Christ in 1897 * followed his lead but included also Fadyenia Hook. 
& Bauer in the mélange. 
During the next year Moore + published a synopsis of ferns which 
in general approximated those of Presl and Fée but differed in a 
number of features particularly in the inclusion of Phegopterts in 
Polypodium, a practice to which all Englishmen except John Smith 
seem to have been unfortunately addicted. Moore’s arrangement 
is as follows : 
Polypodieae. 
POLYPODIUM (incl. Phegofteris). POLYSTICHUM (incl. (yc/opeltis). 
GONIOPTERIS. : FADYENIA. 
DicTyopreris. SAGENIA. 
Dipreris. PLEOCNEMIA. 
Aspidieae. NEPHRODIUM (veins connivent). 
ASPIDIUM (adopted for Bathmium LASTREA (veins free). 
Link Z. £., and Podopeltis Fée). OLEANDRA. 
CyRTomiuM (incl. Phanerophiebia). NEPHROLEPIS. 
CycLopium. 
The arrangement of Hooker { is well known. Polypodium 
Was retained in its Swartzian sense regardless of habit or venation 
and consequently contained such strange bedfellows as Phegopteris, 
Goniopteris, Dictyopteris, and Dipteris besides the whole array of 
eremobryoid species; Aspidium was taken up for the centrally pel- 
tate indusiate species of whatever type of venation and habit, and 
Nephrodium was similarly taken up for those species with a cordato- 
reniform indusium ; in the last genus, § Las¢rea contained the free- 
veined species, § Eunephrodium, the connivent-veined species, while 
the species with anastomosing veins were distributed among the 
sections Sagenia and Pleocnemia. Didymochaena, Fadyenia, and 
Meniscium were also maintained. As stated above, generic limita- 
tions at Kew have never represented natural genera, and yet hav- 
ing been popularized in such a general work as Synopsis Filicum 
_they have had an influence probably wider than any other system 
* Die Farnkrauter der Erde, 1897. 
T Index Filicum, Ixxxi-xc. Ap. 1857. 
t Species Filicum, 4: 5-150. 1862. Also Synopsis Filicum, 1874. 
