ICONES FILICUM SINICARUM 
PLATE 182 
POLYSTICHUM CHINGAE Ching 
POLYPODIACEZ 
POLYSTICHUM CHINGAE Ching, sp. nov. 
Species P. xtphophyllt Baker proxime affinis, differt paleis stipitis rachisque cas- 
taneo-brunneis, ovatis, pinnis majoribus, falcatis, basi anteriore auricula deltoidea magna 
acutissima instructa, soris utraque coste latere biseriatis. 
Rhizome short, erect, densely scaly; scales linear-lanceolate, ferruginous brown; 
fronds cespitose, stipe 16-30 cm long, straminous, or rufo-brown on the lower part, 
nitente, sparcely clothed in large ovate, castaneous-brown shining scales, lamina oblong, 
25-35 cm long, 10-14 cm broad, base not attenuate, simple pinnate under rather short 
acuminate, coadunate apex; pinnae 13-17-jugate, horizontally patent, close, 6-8 cm long, 
I.5 cm broad at middle, falcate-lanceolate, long-acuminate, the basal ones as long as 
next above, more or less deflexed, the uppermost ones shortened, subsessile, anterior 
side provided with a large deltoid, sharply pointed auricle, the posterior side cuneate, 
margin remotely serrate with low, sharply pointed and appressed teeth; texture coriace- 
ous, color green, glabrous above, under side and rachis copiously clothed in light brown, 
lanceolate, fimbriate, appressed scales; venation not distinct on both sides, lateral veins 
flexuose, pinnate, 4-6 in each group, the anterior basal one stops midway, the rest extend 
to margin; sori small, rounded, irregularly 2-rowed, dorsal on veinlets, indusium small, 
rounded, fugaceous. 
Yunnan: Without locality, H. T. Tsat 51800, 51643 (type). 
This remarkably distinct species, resembling Cyrtomiuwm Balansae Christ in general 
habit but with free venation, finds no close relative in the genus but P. xiphophyllum 
Baker, which differs in much smaller size, coal-black subulate scales on stipe and rachis, 
in smaller pinne with at most bluntly auriculated anterior base and always uniseriate sori 
on each side of costa. 
The species is named after my wife, in recognition of her untired assistance in ably 
typewriting my manuscripts for this Icones and many other papers so far published. 
Plate 182. Fig. 1. Habit sketch (natural size). 2. Pinna, showing venation and sori (x 2). 
3-1. Scales from stipe (x 16). 5. The same from costa beneath (x 16). 6. Indusium (x 20). 
