rc.ONES FILICUM SINICARUM 



47 



PLATE 24. 



DIPLAZiUM PELLUCIDUM Chin 



o* 



POLYPODIACEAE 



DIPLAZIUM PELLUCIDIUM Ching in Sinensia 1: 7 (1929). 



Rhizome short, thick, obliquely erect; stipes densely tufted, clad rather sparsely 

 in membranaceous brown subulate ciliate spreading scales, 20-23 cm. long, blackish on 

 the lower half, dull stramineous upward, deeply channelled above; fronds oblong-ovate, 

 30-32 cm. long, 17-20 cm. broad in the middle, which is much the broadest, 

 slightly abbreviate towards base, simply pinnate, rachis stramineous, scaly; 

 pinnae 10-12 pairs under a broad pinnatifid acuminate apex, the middle ones 9-11 cm. 

 long, 1.6-1.8 cm. broad near the base, lanceolate, subhorizontally patent, the basal 

 ones shorter (8-9 cm.) and as broad, only slightly deflexed, alternate, rather 

 approximate, the lower ones sessile, the upper ones broadly adnate, subtruncate, or 

 rounded at base, dilated on both sides, apex acuminate, remotely and rather irregular- 

 ly crenate below the middle, but distinctly and regularly serrate towards apex, costa 

 slender, lateral veins transluscent, distinct, tree, 4-5 mm. apart, 2-jugate, except the 

 basal pair which is mostly 3-jugate, very ascending, extending to the margin; texture 

 thin, pellucido-chartaceous, lustrous, light green above, paler below (when living); sort 

 linear, 3-5 mm. long, slightly curved, oblique, following the anterior veinlet of the 

 group, placed midway between costa and margin, very rarely diplazioid, indusium 

 moderate broad, persistent. 



Distribution: Kwangsi. 



Plate 24. Fig. 1. Habit sketch (natural size). 2. A portion of pinna, showing venation and 

 sori (x 7) . 3. Scales from rhizome (x 24). 



