CHAEACTEKS OF TRIBES AND GENEKA. 131 



Sp. M. bifurcatum {Siv.) (v v.) ; M. dimorphuin [Hook, 

 and Grev., t. 145). 



This species is also a native of St. Helena, and is con- 

 sidered by some to be only a form of the preceding. 



46.— PsoMiocAEPA, Pi-esZ (1849). 



Polyhotrya sp., J. Sm. ; Acrostichum sp.. Hook. Sj'. Fil. 



Vernation fasciculate, erect, acaulose. Froiuls sub-bipiu- 

 natifid deltoid, the sterile G to 18 inches high, pilose, with 

 articulate hairs, segments oblong lanceolate. Veins forked, 

 venules free. Fertile fronds 8 to 12 inches high, long 

 stipate, slender, wholly contracted, forming a sporangi- 

 ferous panicle. 



Type. Polyhotrya apufolia, J. Sin. 



lUust. Moore Ind. Fil., p. 1, fig. 8 ; J. Sm. Ferns, Brit, 

 and For., fig. 36. 



Ods. — This genus is founded upon a very peculiar Pern, 

 a native of the Philijipine Islands, and was originallj' 

 placed by me under Polyhotrya. Setting aside the con- 

 traction of the fertile fi-onds, it might be taken for a small 

 multifid species oi Pheijopterls or Lastrea. 



Sp. P. apiifolia (.7. Sm.) (v v.) {Polyhotrya aplifolUi, 

 J. Sm., 1841. Eniize in Sel/h. FIL, t. 6'2. Gard. in Field, 

 Sert. t. 30, 31). 



47.— Egexolfia, ScJiott. (1843). 



Polyhotrya sp., aacf. ; Acrosiiclmm sp., Hook. Sp. Fil. 



Vernation sarmentose, short, sub-hypogeous. Fronds 

 contiguous, stipate, pinnate, rarely bipinnatifid, 1 to 3 feet 

 high, generally viviparous ; sterile pinnsB linear lanceolate, 

 sub-entire or dentate, laciniated or pinnatifid, sinus mu- 

 cronate. Veins forked or pinnate, venules free. FertiUi 



