ICONES FILICUM SINICARUM 
PLATE 180 
DRYOPTERIS LIANKWANGENSIS Ching 
POLYPODIACEZ 
DRYOPTERIS LIANKWANGENSIS Ching, sp. nov. 
Species D. Scottit (Bedd.) Ching proxime affinis, differt multo majore, pinnis latera- 
lis numerosis, longioribus, paleis stipitis rachisque rufobrunneis creberris, majoribus, 
persistentibusque. 
Rhizome thick, woody, erect or procumbent; fronds ceespitose, stipe 45-60 cm long, 
over I cm thick near base, broadly grooved above, densely clothed throughout in sub- 
dimorphous rufo-brown, lanceolate, hair-pointed, membranaceous, spreading scales to 1.2 
cm long, lamina oblong-elongate, 80-100 cm long, 30 cm broad, simple pinnate under the 
rather short, caudate, deltoid, pinnatifid and acuminate apical part; pinnae 20-jugate or 
more, basal ones not shortened, 20 cm long, 2.5 cm broad, the uppermost ones to 8 cm 
long, 1.2 cm broad, broadly linear, acuminate, base truncate, slightly oblique, subsessile, 
patent, alternate, 3-4-5 cm apart, incisely crenato-serrate with large roundish teeth; 
texture herbaceous, green, rachis densely scaly with similar but smaller scales as those on 
stipe, glabrous above, fibrillosely scaly beneath, and especially on the lower part of costa; 
venation free, distinct, lateral main veins flexuose, pinnate with 5 pairs of obliquely 
ascending veinlets, of which the basal pair stop short midway, the rest extending towards 
margin; sovz rather small, rounded, irregularly 2-3-Sseriate, exindusiate, leaving rather a 
broad sterile margin. 
Kwangsi: San Fan, Chu Fen Shan, north of Lu-chen Hsien, R. C. Ching 5832 
(type), in deep wooded ravine, very common. Kwangtung: Suni, Y. K. Wang 31022, 
July 22, 1931. in moist ravine. 
This distinct endemic species of the group of D. hirtipes (Bl.) resembles none but 
perhaps D. Scotti: (Bedd.), with which it has in common exindusiate sori, from which, 
however, it differs in enormously larger size with numerous close, longer pinne and very 
dense reddish-brown linear-lanceolate large thin scales not only on stipe but also on rachis. 
Plate 180. Fig.1. Habit sketch (natural size). 2. Portion of pinna, showing venation and sori 
(x 3). 3. Scales from stipe (x 10). 4. The same from costa beneath (x 10). 
