POLYPODIUM. 



187 



P. pellucidum — pel-lu'-cid-um (pellucid -veined), Kaulfuss. 



This stove species, native of the Sandwich Islands, much resembles 

 P. vulgare (the common Polypody) in habit and size, but the veins of its 

 pinnate fronds are beautifully pellucid, being distinct even in dried specimens. 

 The spore masses are large and prominent. — Hooker, Species Filicum, iv., p. 20G ; 

 Second Century of Ferns, t. 44. Nicholson, Dictionary of Gardening, hi., p. 191. 



P. p. myriocarpum — rny-ri-oc-ar'-pum (many -fruited), Hooker. 



This variety differs from the typical plant through its leaflets being 

 pinnatifid (cut nearly to the midrib). — Hooker, Icones Plantarum, t. 84. 



P. (Niphobolus) penangianum — Niph-ob'-ol-us ; pen-ang-i-a'-num (from 

 Penang), Hooker. 

 A distinct and very handsome, stove 

 species, native of Penang, with the general 

 aspect of the Bird's-nest Fern (Asplenium 

 Nidus). Its entire fronds, 1ft. to l^ft. long 

 and 2in. to oin. broad, are almost stalkless ; 

 they are very gradually narrowed towards 

 the base and somewhat undulated at the 

 edges ; their texture is papery, their upper 

 surface is naked, but their under- side is 

 thickly clothed with fine, silky hairs. The 

 spore masses are disposed in rows close 

 together, confined to the upper part of the 

 frond, and fall distinctly short of the edge. 

 Fig. 53 is reduced from Col. Beddome's " Ferns 

 of British India," by the kind permission of 

 the author. — Hooker, Species Filicum, v., p. 52. 

 Beddome, Ferns of British India, t. 121. 



Fig. 53. Poly podium penangianum 



(much reduced). 



P. pendulum — pen'-dul-um (hanging), Swartz. 



In this stove species, native of Brazil and Peru, the flaccid, pendulous 

 fronds, 6in. to 12in. long and lin. to 2in. broad, are produced from a some- 

 what upright rootstock. They are either stalkless or very short- stalked, and 

 are cut down to the rachis into blunt, entire leaflets, enlarged at the base, of 



