136 UNDERWOOD: OuR GENERA OF ASPIDIEAE 
Leaves simple, pedate; veins obscure. CAMPTODIUM fF Fée. 
Leaves compound, pinnate; veins distinct. DryopTeris Adans, 
Veins pinnate, usually uniting into simple areolae especially toward the outer margin, 
atypically free. PHANEROPHLEBIA Presl. 
Veins connivent, 7. ¢., the branches from contiguous pinnate groups uniting to form one 
or more arches. 
Indusium normally absent. 
Sori round, punctiform. GonropTeERis Presl. 
Sori elongate on the more or less parallel transverse arches. 
MENISCIUM Schreb. 
Indusium cordato-reniform, attached by the sinus. Cyctosorus ¢ Link. 
Indusium oblong, attached longitudinally by the center. A~esochlaena R. Br. 
Indusium orbicular, centrally peltate. Cyc odium Presl. 
Veins forming a single row of areolae next the midrib with free included veinlets ; in- 
dusia elongate- cordate ; leaves simple. FapventA Hook. & Bauer. 
Veins copiously anastomosing. 
‘Indusium normally absent. 
Leaves bipartite, the main veins dichotomous. Dipter’s Reinw. 
Leaves pinnate. Dictyopteris Presi. 
Indusium orbicular, centrally peltate. 
Areolae regular, with the included veinlets straight and directed towards the 
Margins of the segments. Cyrtomium Presl. 
Areolae irregular, fine, the included veinlets often branched and recurrent. 
TECTARIA Cav. 
Indusium cordato-reniform, attached by the sinus. SAGENIA Presl. 
In the above synopsis we have not included:a series of extfa- 
limital genera like Luerssenia Kuhn and Chetropteris Christ of 
comparatively recent foundation, nor some of the older genet 
like Pleocnemia* Pres], which are likewise extra-limital. The as 
pidioid generic groups which in Synopsis Filicum are wrongly 
bound up in the genus Acrostichum may form the subject of a later 
paper in the present series. 
COLUMBIA UNIVERSITY, 24 February 1902. 
+ Camptodium was established by Fée (Gen. Filicum, 298. 1850-52) based on 
Aspidium pedatum Desv., an anomalous member of the group in habit and_ structure 
found in the West Indies. 
t Cyclosorus Link, 1841, appears to be the first name correctly applied to 4 member 
of the group of species with connivent veins and cordato-reniform indusia It wae 
sents the section Eunephrodium of Synopsis Filicum which followed the error pape 
Schott in 1834 in making Mephrodium stand for a group of species that its founde 
never included within its limits. 
SS 
or 
