AOEOSTICHEiE. XTU. 



parallelo-fiircate from » central costs; iiemdes free, conniTent 



■with the margin, 



JFronds dimorphous, pinnate, the fertile contracted. Ehizome 



scandeut. — This genus diifers from Stenoehlcena, with which it 



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



gland on the margin of the pinnEe near their base. 



Ex. : L. variabilis, F4e. I L. sorbifolia, IFSe. 



L. leptoearpaj JVe, L. Smithii, lP4e. 



L. ooehuichinensis. Me. \ L. heteromoipha (Stenoehl33na,J'.5'OT J 



* * Veins tra/asreersely combined in a single series. 



5. STENOCfiL^NA, J. Smith, Sook. Joum. Sot. iii. 401. 



Cafeabia, Fred; LoMABlOBOTETSj Fie; OsMUlfDaj sp., Auct. ; OlfO- 

 CLE^ sp., Auct.; AwEMLffi Sp., Auct. ; LOMAEIiE Sp., Auct. ; POLTBO- 



TUYM sp., Mettenius. 



Sori superficial non-indusiate, the recepiaoles occupying the 

 under surface of the contracted fertile fronds. Veias arcuate at 

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

 connivent with the thickened cartilagineo-serrate margin. 



Fronds dimorphous, the barren pinnate, the fertile contracted 

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

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

 articulated. Ehizome scandent. — A genus admirably marked by 

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

 § EustenocklcBna. — Pinnse articulated ; fertile fronds pinnate. 

 Ex. : S. soandens, J. 8m. | ? S. pycnophyUa, Fresl. 



§ LoTna/riohotrys. — Pinnae continuous ; fertile fronds bi-pinnate. 

 Ex. ; S. Meyeriana, Fred. \ S. tenuifolia, Moore, 



6. OLFERSIA, Saddi, Oper. Scient. di Solon, iii. 283, 1. 11. 



ACONIOPTEEIS, Fred; Doboapteeis, Fresl; Nebeoglossa, Fred; 

 AcEOSTICHI sp., Auct. ; 0smt;wd.51 sp., Awit. ; CAUDOLLLffl sp., Mi/rbel; 

 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 oosta ; venules parallel, united at or 

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

 with free excurrent marginal veinlets. 



