ICONES FILICUM SINICARUM 



33 





PLATE 41. 



POLYPODIUM DAREAEFORMIOIDES Chin 



POLYPODIUM DAREAEFORMIOIDES Chingin Sinensia 1: 12 (1929). 



# % 



Rhizome wide-creeping, thick, densely covered with imbricate shining brown scales, 

 which are to 4 mm. long, broadly rounded at base, gradually narrowed upward to a 

 linear-subulate apex with ciliate margin, attached to the rhizome by a dark brown 

 centre of the broad base; stipes remote, rigid, to 18 cm. long, naked, lustrous castaneous 

 and so is the entire rachis, articulated to the rhizome; fronds deltoid, shortly acuminate, 

 22 cm. long, 15 cm. broad at base, quadripinnate; pinnae about 10 on each side, the 

 lower ones much the largest, petiolate, erecto-patent, 8-9 cm. long, 6-7 cm. broad, 

 deltoid, secondary rachis naked, shining castaneous, 3-4 cm. long, 1. 2-1.5 cm. broad, the 

 upper ones gradually smaller, pinnate, the pinnules of third order oblong, on a winged 

 petiole, costule shaded castaneous near base, pinnate, segments linear-oblong, clavate, 

 2-3 mm. long, often bifid into short lobes of unequal length; texture thin herbaceous; 

 veins forked, veinlets simple, i to each segment, obscure, diaphanous; sort placed mostly 

 some distance below the branching of veins, medial, small, round, about 1/3 as broad 

 as the segment. 



Plate 41. 1 Habit sketch (natural size.) 2. A pinna (x 2). 3. A pinnule, showing venation 

 and sori (x 4). A scale from rhizome (x 24). 





