I 



ICONES FILICUM SINICARUM 



79 



PLATE 



39 



VITTARIA NANA Chi 



n §- 



POLYPODIACEAE 



VITTARIA NANA Ching in Sinensia i: n (1929). 



■ 



Rhizome creeping, slender, clad in moderately dense dark short, castaneous, 

 linear-subulate scales with obscurely denticulate margin; fronds numerous, caespitose, 

 erect, 3-7 cm. long, 1-1.5 mm. broad, linear, gradually narrowed into the base of a short 

 stipe, slightly narrowed towards a blunt, rarely acuminate apex, margin revolute, 

 midrib deeply sulcate above, broadly keeled below; texture subcoriaceous, flaccid, 

 glabrous; veins hidden; sori short, confined to upper 1/3, and quite a way short from the 

 apex, often one-sided, and placed midway between costa and margin, which is at first 

 rather broadly revolute, and finally relaxed. 



Plate 39: Fig. 1. Habit sketch (natural size.) 2. Fronds, showing different stages of opening 

 induciate margin, (enlarged). 3. A cross section of frond, showing disposition of sori (x 30). 4. Scales 

 from rhizome (x 20). 





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