* 



ICONES FILIGUM SINICARUM 39 



PLATE 20. 



LINDSAYA CHINENSIS Clung 



POLYPODIACEAE 



LINDSAYA CHINENSIS Ching in Sinensia 1:5 (1929). 



Rhizome creeping, about 3 mm. thick, scales dense, spreading, dark shining 

 brown, linear with rather a blunt apex, 1-1. 5 mm. long; stipes approximate, 4-10 mm. 

 apart, slender, glabrous throughout, dark shining chestnut brown and become lighter 

 upward, to 9 cm. long, and 1 mm. thick at base; fronds deltoid-lanceolate, 10-16 cm. 

 long, about 5.5 cm. broad at base, 1. 2-1.8 cm. broad in the middle, glabrous, bipinnate 

 in the lower one-third, the remaining upper two-thirds simply pinnate, or sometimes 

 the whole frond simply pinnate, gradually diminishing towards apex; pinnae spreading, 

 petiolate, alternate, the lower 3-6 pairs oblong-lanceolate, 2-3 cm. long, 6-10 mm. broad, 

 pinnate under a pinnatifid rather blunt apex; pinnules 5-8 pairs, almost equilateral 

 triangular, petiolulate, cuneate at base, and cut on the rounded outer margin about | 

 way down into 2-4 short broad more or less dilated segments with a blunt or more or 

 less erosed truncate appex, the upper ones often subentire, to 4 mm. long, about as 

 broad; the upper pinnae numerous (about 22-30 pairs), reniform to flabellato-cuneate, 

 to 1 cm. long and as broad, variously cut along the rounded outer edge into 4-6 oblong 

 more or less dilated segments which are often again bifid and of the same shape as, but 

 larger than, those in the pinnules of lower pinnae; rachis slender, terete, more or less 



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channelled above, light green, except the lower part which is dark stramineous-brown, 

 glabrous; veins slender, free, rather distinct, flabellate, mostly once-forked or simple, 

 1-2 (never 3) to each ultimate segment; texture pellucido-herbaceous, thin, but 

 rigid; sori orbicular to transverse-oblong, one to each segment, terminating 1-2 veinlets, 

 indusium membranaceous, pale green, margin subentire or bifid, falling quite a way 

 short of the margin. 



Distribution: Kwangsi. 



Plate 20. Fig. I. Habit sketch (natural size). 2. A pinna from the upper part of frond (x 3). 

 3. Scales from rhizome (x 24). 





