AN ENUMERATION OP CULTIVATED FEKNS. 77 



4. LEUCOSTEGIA, Presl 



Rhizome thick, short, surculose, sometimes hypogseous. 

 Fronds deltoid, tripinnatifid, or 

 nmltifid, sometimes lanceolate 

 and bipinnatifid. Veins forked; 

 venules free, the anterior ones 

 often very short. Receptacles 

 terminal, superficial, or immersed 

 on the exterior venules. Sori 

 round. Indusium sub-reniform, 

 oblong, or nearly orbicular, 

 plane, interiorly attached by its 

 broad base, equal with or shorter 

 than the margin, thin, scariose. 



Genus 4. Fertile pinna. 

 * Rhizome epigceous sqiiamose. 



1. L. hirsuta, /. Sm. En. Fil. Philipp. Microlepia hirsuta, 

 Moore. Davallia ciliata, Hook. Sp. Fil. 1, 184, t. 

 60 A. Luzon. 



2 L. Borneensis, J. 8m. ; Nephrodium (Lastrea) Borneense, 

 Hook. Sp. Fil. 4, p. Ill; Hook. Ic. PI. L 993. Borneo. 



3. L. parvula, J. 8m. Davallia parvula, Wall. ; Hook et 



Grev. Ic. Fil.f. 138. Malayan Islands, Singapore. 



4. L. pulchra, J. 8m. Davallia pulchra, D. Don. Acro- 



phorus pulchra, Moore Ind. Fil. (excl. syn. Davallia 

 chserophylla) . Nepal. 



5. L. chseropliylla, J. Sm. Davallia chaerophylla, Wall.; 



Hook. Sp. Fil. 1, 157, /. 51 A. Acrophorus chaero- 

 phyllus, Moore. Humata chaBrophylla, Mettin. Fil. 

 Hort. Lips. t. 27, f. 9, 10. East Indies. T. 



6. L. affinis, J. Sm. Davallia affinis, Hook. Sp. Fil. 1, 158, 



t. 52 B. Acrophorus affinis, Moore. Humata 

 affinis, Mett. Fil. Hort. Lips. t. 27, /. 5, 6. Ceylon, 

 Singapore, Philippine Islands. 



** Rhizome hypogceous. Fronds deciduous. 



7. L. immersa, Presl. ; J. Sm. ; Hook. Gen. Fil. t. 52 A. 



Davallia immersa, Wall. ; Hook. Fil. Exot. t. 79. 

 Acrophorus immersus, Moore. Humata immersa 



Mettin. East Indies. 



