alii. GElrtBA OP tffiRNS : 



been associated. The authentic specimens we have examined, 

 (Kb. Heward), seem to have more structural accordance with 

 the PteridecB, though their aspect is certainly vittarioid. 

 Ex. : H. scolopendrina, Preil. 



62. PTERIS, Linnceus, Gen. PI. 780. 



THBLYPTEBIS, Adanson ; OETOSIS, Necker; CllfCiHrAi.is, Gleditsch; Mo- 

 WOGONIA, Presl; EUPTEBIS (1), Agardh; OBNITHOPTEBIS, Agardh; PTEBI- 

 ixicsis. Link; EcpiERis (2), Newman; LYTONEUBON, Klotzsch ; PYCNO 

 DOBIA, Presl; LONCHITIDIUM, Fee; ALLOSOBI sp., Presl; PHOBOLOBI 

 sp., Desvaux ; CASSEBEEB.* sp., J. Smith ; PEL-LXJK sp., Fee ; CHEILAN- 

 THIS sp., Kunze; LoNCHiTiDis 8p.,Linnceus; DOBTOPTEBIDIS sp., Klotzsch; 

 PLATYLOMATIS sp., J Smith. 



Sori indusiate, marginal, linear, continuous or interrupted ; the 

 receptacles linear transverse, uniting the apices of the veins. 

 Indusium of the same form, membranaceous. Veins simple or 

 forked from a central costa ; venules free. 



Fronds varying from pedate to decompound, often large, 

 herbaceous or coriaceous. Rhizome short erect, or creeping, 

 sometimes much elongated. An extensive genus, comprising 

 species of greatly varied aspect. 



Eupteris, Agardh. Vernation terminal. 



Ex. : P. geraniifolia, Raddi. 

 P. longifolia, Lin. 

 P. crenata, Sic. 

 P. aspericaulis, Wall. 

 P. tremula, Brown. 



P. semipinnata, Lin. 

 P. scaberula, Richard. 

 P. gracilis, Fee. 

 P. hastata, Sw. 

 P. calomelanos, Su>, 



Omithopteris, Agardh. Vernation lateral, 

 Ex. : P. aquilina, Lin. \ P. esculenta, Forgt. 



(b) Lower veins only arcuately anastomosing. 

 63. CAMPTERIA, Presl, Tent. Pterid. 146. 



PTEEIBIS sp., Auct. ; LITOBBOCHLK sp., Auct. 



Sori indusiate, marginal, linear, continuous; the receptacles 

 linear transverse, uniting the apices of the veins. Indusium of 

 the same form, membranaceous. Veins simple or forked from a 

 central costa, the lowest pair only arcuately anastomosing, form- 

 ing a series of elongated costal areoles ; venules free. 



