172 



FERNS : BRITISH AND FOREIGN. 



Tmbe VII.— PTERIDE-ffil. 



Sori marginal, round, oblong or linear, interrupted or con- 

 tinuous. Indusium lateral, exteriorly attached on the margin 

 of the frond, special to each sorus, or sometimes universal to 

 two or more sori. 



§ 1. Cheilanthece. Son marginal, round or oblong, distinct 

 or laterally contiguous and confluent forming a compound linear 

 torus. Indusium special to each receptacle, or more or less 

 linearly continued and common to two or more receptacles. 



86. NOTHOLJENA, B.Br.; /. 8m. 



Vernation fasciculate, generally erect, csespitose. Fronds 

 pinnate or bi-pinnate, 0-18 inches high, pilo-tomentose, squa- 

 mose or farinose. Veins forked, free. Beccptacles terminal. 



Ge-us 86.— Mature frond, upper &ide. No. 10. 



Sporangia few to each receptacle, contiguous, forming a mar- 

 ginal row in the axis of the reflexed sub-mdusiform margin. 



1. N". trichomanoides, B. Br. ; Lowe's Ferns, 1, t. 14 B. 



Pteris trichomanoides, Linn. ; (Plum. Fil. t. 7 5); Schlc. 

 Fil. t. 99. — Jamaica. 



2. N. rufa, Presl. Notholsena ferniginea, Hoolc. 2nd Cent, of 



Ferns, t. 52. — Mexico, Peru. ' 



3. N. braehypns, /. 8m, Cheilanthes brachypus, Kunze. 



Notholasna squamata, Sort. N. squamosa, Lowe's 

 Ferns, 1, t. 17 B — Mexico. 



4. N. distans, B. Br. ; Labill. Nov. Cald. t. 7 ; Hook. Ic. PI. 



t. 980; Lowe's Ferns, 1, t. 19. — Australia, New 

 Zealand, and New Caledonia. 



5. N. mollis, Kunze, Fil. t. 53, f. 2.— Chili. 



