ACEOSTICHE.3E. XVii. 



parallelo-furcate from a central costa; venules free, conniyent 

 with the margin. 



Fronds dimorphous, pinnate, the fertile contracted. Rhizome 

 scandent. This genus differs from Stenochlcena, with which it 

 agrees in habit, in the absence of the costal areole, and of the 

 gland on the margin of the pinnae near their base. 

 Ex.: L. variabilis, Fee. I L. sorbifolia, Me. 



L. leptocarpa, Fee, \ L. Smithii, Fee. 



L. cochinchiuensis, 



1 L. heteromorphaCStenochlsena.J'.iS'm.,; 



* * Veins transversely combined in a single series. 



5. STENOCHL^jNA, J. Smith, Hook. Journ. Sot. iii. 401. 



CAFBABIA, Presl ; LOMABIOBOTBYS, Fee ; OsMOTfD^ sp., Auct. ; Oiro 



CLB^ 8p., Auct.; ANEMI2E Sp., Auct. ; LOMABUE Sp., Auct . ; POLYBO- 



inyx sp., Mettenius. 



Sori superficial non-indusiate, the receptacles occupying the 

 under surface of the contracted fertile fronds. Veins arcuate at 

 the base, forming narrow costal areoles ; venules parallelo-furcate, 

 conniyeut with the thickened cartilagiueo-serrate margin. 



Fronds dimorphous, the barren pinnate, the fertile contracted 

 pinnate or bi-pinnate, andhaving slightly revolute margins. Pinnse 

 with a marginal gland near the base on the upper edge ; sometimes 

 articulated. Khizome scandent. A genus admirably marked by 

 the costal areole of the barren fronds, and the marginal gland. 

 EustenocMama. Pianos articulated; fertile fronds pinnate. 



Ex. : S. scandens, J. 8m. \ ? S. pycnophyUa, Presl. 



Lomwiobotrys. Pinnse continuous ; fertile fronds bi-pinnate. 

 Ex. : S. Meyeriaua, Presl. \ S. tenuifolia, Moore. 



6. OLFEBSIA, Eaddi, Oper. Sclent, di Solon, iii. 283, 1. 11. 



ACONIOPTEEIS, Pretl; DOECAPTEEIS, Presl ; NEBBOGLOSSA, Pred; 

 ACEOSTICHI sp., Auct.; OSMUNDS sp., Auct.; CANDOLLLS sp.,Mirbel; 

 PTEEIDIS sp., Auct. 



Sori superficial, non-indusiate, the receptacles occupying one 

 or both surfaces of the contracted fertile fronds. Veins simple 

 or forked from a central costa ; venules parallel, united at or 

 near the margin by a straight arcuate or zigzag vein j sometimes 

 with free excurrent marginal veinlets. 



