47. FADYENIA. 303 



(in part}. /3, 0. Welwitzchii, Baker ; shoots weaker, wide-trailing ; scales linear- 

 subulate, squarrose. 



Hab. Natal, Mascaren Isles, Seychelles, Guinea Coast ; /3, Angola, Dr. Welwitzsch. 

 The typical plant is about midway in mode of growth between species 1 and 4 ; /3 has 

 the trailing shoots and spreading scales of nodosa, but in other respects agrees jwith_ 

 this. 



4. 0. nodosa, Presl ; shoots trailing horizontally, densely clothed with linear- 

 subulate spreading scales ; st. scattered, 2-6 in. 1., often ebeneous, articulated 

 not far from the base ; fr. 6-12 in. 1., 1^-2^ in. br., the apex acuminate, the edge 

 entire ; texture subcoriaceous, both sides glossy ; sori scattered, placed nearly 

 all in the inner half of the frond ; invol. $ lin. br. HJc. Sp. 4. p. 157. 



Hab. West Indies and Guiana. Distinguished from all the other species by its trailing 

 shoots, satiny gloss, and copious irregularly-scattered sori. 



5. O. Wattichii, Hk. ; shoots trailing horizontally, the scales fibrillose, 

 spreading, ferruginous ; st. close or scattered, ^-2 in. 1., jointed close to the 

 hase ; fr. 6-12 in. 1., f-liljr in. br., the apex acuminate ; texture papyraceo- 

 herbaceous or subcoriaceous; rachis naked or scaly ; both sides naked \ sori in 

 single rows close to the midrib ; invol. ^ lin. br., ciliated, opening towards the 

 edge. Hk. Sp. 4. p. 158. 



Hab. N. India, up to 7,000 ft. 



6. 0. Cumingii, 3. Sm. ; shoots trailing horizontally, clothed with adpressed 

 linear scales ; st. close or scattered, 2-3 in. 1., articulated near the base ; fr. 12-18 

 in. 1., 1^ in. br., narrowed gradually towards both ends ; texture herbaceous ; 

 rachis and both sides slightly pubescent ; sori in two irregular rows near, but 

 not close to, the midrib ; invol. firm, oblique. HJc. /Sp. 4. p. 155. O. chinensis, 

 Hance. /3, O. Sibbaldi, Grev. ; texture thinner ; surfaces more hairy ; sori in 

 very irregular wavy lines not so near the midrib. Ann. Nat. Hist. 2 ser. 1. 

 p. 327, 



Hab. Canton, Assam, Philippines, Neilgherries, and Malaya. Var. longipes, Hk., 

 from Moulmein, has stems 4-5 in 1., articulated near the middle. /3, Tahiti ; gathered 

 by Sibbald and Bidwell. Probably this occurs in Tropical Australia, as there are speci- 

 mens amongst Leichhardt's plants. 



GEN. 47. FADYENIA, Hook. 



Sori oblong, in two series near the midrib, terminating free veirilets. Invol. 

 large, subreniform, attached by the centre, free all round the edge. A single 

 West Indian species. TAB. V. f. 47. 



1. F. prolifera, Hk. ; fr. entire, dimorphous, the sterile ones f-1 in. br., 

 elongated and rooting at the apex, the fertile one ligulate, narrowed below, 

 6-9 in, 1., 2f-f in. br. ; veins anastomosing copiously; texture subcoriaceous; 

 sori filling up nearly the whole space between midrib and edge. Hk. Sp. 4. 

 p. 160. Fil. Ex. t. 36. 



Hab. Cuba and Jamaica. 



