ICONES FILICUM SINICARUM 
PLATE 133 
CHEILANTHES DUCLOUXII (Christ) Ching 
POLY PODIACEZ 
CHEILANTHES DUCLOUXIZ (Christ) Ching in C. Chr. Ind. Fil. Suppl. III. 54 (1934). 
Doryopteris Duclouxii Christ, Bull. Acad. Géogr. Bot. (1902) 231; Bull. Soc. Bot. France 52: 
Mém. 1. 58 (1905); C. Chr. Ind. Fil. 244 (1906); Acta Hort. Gothob. 1: 86 (1924). 
Doryopteris muralis Christ, Bull. Acad. Géogr. Bot. (1904) 111; C. Chr. Ind. Fil. 244 (1905). 
Doryopteris Mairei Brause, Hedwigia 54: 206 t. 4. f. J. (1914). 
Rhizome short, erect; scales at the apex blackish, lanceolate, rigid and 
opaque; fronds cespitose, stipe 14-25 cm long, glabrous, glossy, dark castaneous, 
terete throughout, lamina deltoid, semi-bipinnate, 9-12 cm each way, falvous, 
coriaceous, glabrous on both sides, rachis, costa and costules underneath shining 
castaneous; lateral pinne 4-5-jugate under the lanceolate, entire or pinnatifid 
apical part, all connected by a narrow wing along rachis, or in full-grown plants 
the basal pair separated from those above by wingless rachis, basal pinne much 
the largest, sub- or semi-deltoid, 5-7 em long, 4-6 cm broad, semi-pinnatifid, 7.e. 
only the lower side of costa with 3-5 lanceolate segments, of which the basal ones 
much the longest, 4-5 cm long, 5 mm broad above base, entire throughout, or 
sometimes with a few additional short segments on the lower side, while the 
upperside of costa is entire or irregulariy pinnatifid with short segments; the 
upper lateral pinne generally simple, entire, falcate, or sometimes the second 
pair also semi-pinnatitid; veins in segments free, dichotomously forked, hidden; 
sort terminating the veinlets, indusium gray, membranaceous, entire, continuous 
to the very apex of segment; spores spherical, echinose. 
Yunnan: Ducloux (type), Dec. 23, 1896; Mengtze, Hancock 31; Tanant (1897); 
Maire 2746, 2737; Forrest 298; Ducloux 1351 (1909); K. K. Tsoong; Makong; E. E. 
Maire, pro parte. Szechwan: Omei region, H. D. Brown 80 (1928). Kweichow: 
Pin-fa, Cavalerie 4228, 1212 (type of Dory. muralis). i 
A distinct species but closely related to Ch. argentea var. obscura Christ, 
differs in larger size and less divided frond with lanceolate, subhorizontally 
patent pinne of fatvous color, of which the lower ones are semi-pinnatifid. 
Var. sulphurea Ching, var. nov. 
Doryopteris Duclouxti {. argentea Christ, Bull. Soc. Bot. France 52: Mém. 1. 58 (1905). 
Doryopieris Mairei Brause, Hedwigia 54: 206 t. 4. f. J (1914). 
Differs from the type in frond being coated underneath with sulphur-yel- 
low waxy powder. 
Szechwan: Nin-yuan Hsien; Harry Smith 1830; Wilson 5297; Handel-Maz- 
zettt 2790. Yunnan: Tali, Forrest 13499; Ngaykio, Ducloux 6343 (1909); Tchang 
Shan, Ducloux 3363; Nieou Ko Shan, Ducloux 6965; Pin-tchouan, Ducloux 6930; Mt. 
Mao Kou Tchang, near Ta-pin-tze, Tali, Delavay 9 (1883). 
This variety must not be confused with Ch. Veitchii (Christ) Ching from 
Szechwan, with which it is very closely related in habit, from which it differs 
above all in stipe being not glossy black and fronds not so finely dissected. 
Plate 133. Fig. 1. Habit sketch (natural size). 2. The same, a simpler form (natural size). 
3. The same, a young plant (natural size), 4. Portion of segment, showing venation (x 6). 5. Scale 
from the base of stipe (x 15). 
