256 
PERNS : BRITISH AND FOREIGN. 
1. F. spieata, Presl. Trichomanes spicatum, TIedw. ; Hook. 
Gard. Ferns, t. 60 ; Lowe's New Ferns, t. 67 C. T. 
elegans , Fudge (in part ) ; Hook. Exot. Fil. t. 52. Feea 
polypodina, Bory, in Did. Sc. Nat. cum Ic. — West 
Indies. 
2. F. nana, Bory. Trichomanes nanum, Bory ; Hook. Sp. 
Fil. 1 ,p. 115. — Guiana. 
140. HYMENOSTACHYS, Bory. 
Vernation fasciculate, erect. Fronds of two forms, 6-10 
inches high; the sterile pinnatifid; the fertile contracted, 
linear, longer than the sterile. Veins in the sterile forked ; 
venules anastomosing, forming oblique elongated areoles ; in 
Genus 140. — Portion of barren frond, natural size; ditto fertile 
enlarged. No. 1. 
the fertile, simple or forked, free. Sori terminal, immersed 
contiguous in a row along both margins of the fertile frond. 
Indusium urceolate-calyciform. Receptacle filiform, continued 
beyond the sporangia and mouth of the indusium. 
