CYSTOPTEEIDB.B XC1. 



126. ACROPHORUS, Presl, Tent. Pterid. 93 (extens.) ; 

 Moore, Gard. Chron. 1854, 135 ; Id., Proceed. Lin. Soc. 

 ii. 286. 



LBUCOSTEGIA, Presl; ODOKTOI/OMA, J. Sm.; ? MOWACHOBOBUM, Kunze ; 

 DAVALLI.B sp., Auct. ; ASPIDII sp., Auct. ; SACCOLOMATIS sp., Auct.; 

 STBNOLOMATIS sp., Auct.; CTSTOPTEBIDIS sp., Auct.; 'Li-sns2B,i&sf. r A.uct.; 

 MICBOLEPI* sp., Auct. ; HUMAT sp., Auct. ; DICKSOWLS sp., Bory. 



Sori indusiate globose, superficial or immersed; the recep- 

 tacles terminal (or rarely axillary in the forks of the venules.) 

 Indusium sub- orbicular, affixed by its posterior margin or base, 

 rarely two or three becoming confluent. Veins pinnato-furcate 

 from a costa, or more rarely repeatedly dichotomous ; venules 

 free. 



Fronds membranaceo-herbaceous or sub-coriaceous, pinnate or 

 more frequently decompound ; the divisions isomerous or dimi- 

 diate. Ehizome creeping. This group appears to us to be 

 properly separated from the Davalliece, on account of having its 

 indusium fixed only by its base, very much in the way of Cyst op- 

 teris. Both Leucostegia and Odontoloma appear to be entirely 

 wanting in good distinguishing characters. Of Monachosorwm 

 we know nothing beyond Kunze's figure and description ; judging 

 from which, however, it appears to be founded on an aged speci- 

 men of Acrophorus, from which the indusium had fallen away. 

 (See No. 100, ante p. Ixx.) 



Acropkorus. Divisions of the frond isomerous. 

 Ex. : A. nodosus, Presl. I A. affinis, Moore. 



A. immersus, Moore. A. hispidus, Moore. 



A. falcinellus, Moore. | A. bifidus (Davallia, Klft.) 



Odontoloma. Divisions of the frond dimidiate. 

 Ex. : A. repens (Dicksonia, Bory. \ A. adiantoides (Aspidium, Bl.J 

 A. cuneifolius(Saccoloma,Pr.) A. tenuifolius (Lindsiea. Bl.) 

 A. Parkeri (Davallia, Hook.) \ 



127. HTJMATA, Cavanilles, Pralect. (1801), 272. 



PACHYPLEUBIA, Presl ; PTEKOK EUBON, Fee; DAVALLUE sp., Auct. ; NB- 

 PHBODII sp., Auct. ; ADIAKTI sp., Linmeus ; NEPHBOLBPIDIS sp., Presl; 

 SACCOLOMATIS sp., Kunze. 



Sori indusiate, rotundate ; the receptacles terminal and verti- 

 cal, or rarely sub-terminal and oblique on the venules. Indusium 



