ICONES FILICUM SINICARUM 
PLATE 246 
POLYSTICHUM TSUS-SIMENSE (Hooker) J. Smith 
ASPIDIACE 
POLYSTICHUM TSUS-SIMENSE (Hooker) J. Smith, Hist. Fil. 219. 1875; Diels in Engl. u. Prantl, 
Nat. Pflanzenfam. 1: iy. 191. 1899; Hand.-Mzt. Symb. Sin. 6: 27. 1929; Ogata, Ic. Fil. Jap. 2: t. 98. 
1229>@. Chr. Ind: : Fil. Supp. III. 165. 1933, 
Aspidium tsus-simense Hooker, Sp. Fil. 4: 16 t. 220. 1862; Miq. Prol. Fl. Jap. 340. 1867; Fr. et Sav. Enum. 
Risjaps 2: 231.. 1876. 
Polystichum lobatum vay. T'sus-simense C. Chr. Ind. Fil. 583. 1905, 
Aspidium monotis Christ in Bull. Bot. Soc. Ital. 1901: 294. 
Polystichum monotis C. Chr. Ind. Fil. 584. 1905. 
Rhizome short, thick, erect, imbricately covered with the bases of old stipes; fronds caespitose, stipe 15-25 
cm long, rather slender, dark stramineous, clothed with large, dark brown, lanceolate scales mixed with 
subulate blackish ones, lamina 20-30 cm long, 10-15 cm broad, ovate-oblong, gradually acuminate, base not 
narrowed, bipinnate below the simply pinnate apex; pinnae about 15-20 pairs, close, obliquely patent, sub- 
falcate, acuminate, 5-9 cm long, petiolate, base strongly unequal, oblique below, acroscopically produced 
and truncate above, pinnate under lobato-pinnatifid apex; pinnules contiguous or subimbricate, elliptic- 
oblong, acute, mucronate, entire or often with minute mucronate serrature, the anterior basal one much 
the largest, erect, close to the rachis, anterior base sharply auricled, margin cuspidato-serrate or often again 
lobato-pinnatifid, the basal pair of pinnae usually as long as those next above, subhorizontally patent; texture 
subcoriaceous, dry brownish or greenish, rachis and the lower part of costa of pinnae beneath copiously 
clothed in firm, blackish, or coal-black subulate scales, glabrous above, under side fibrillose when young, 
and becoming quite glabrous at last; veins pinnate or forked in the pinnnule, indistinct on both sides; 
sort small, 2-46 pairs to each pinnule, medial, terminal on the anterior basal veinlet of each group, indusium 
orbicular, gray, firm, entire, falling off at last. 
Another common fern in China, to the south of Yangtze; numerous specimens have been seen from 
Yunnan, Szechuan, Kweichow, Hupeh, Hunan, K iangsi, Fukien, Chekiang, and southern part of An- 
whei, northwardly to the southern part of Shensi (Tai-pei Shan). 
Also Japan, Korea and Tonkin (Chapa). 
The type of the species, from Tsu-Shima in Southern Korea, represents rather a small form, while 
most of the specimens seen from Japan and China are generally much larger with the anterior basal 
pinnule of each pinna much larger and pinnatifid above the anterior basal auricle. 
Nakai (Bot. Mag. Tokio 39: 117) wrongly reduced the present species as a synonym of the Japanese 
Polystichum polyblepharum Presl, because he thought the two species are identical. I saw types of both 
species and found that they are very different, as was also pointed out by H. Handel-Mazzetti (Symb, Sin. 
6: 27). -On the other hand, I am strongly inclined to consider the present species as being identical with 
the South African Polystichum luctuosum (Aspidium luctuosum Kze.) Ching, comb. nov., as was 
first proposed by Hope. (Journ. Bomb. Nat. Hist. Soc. 3: 475). : 
Plate 246. 1. Habit sketch (natural size). 2. A part of pinna with pinnules, showing venation and sori (X 4). 
3. Scale from the base of stipe ( x 30). 4-5. Scales from the rachis (X 10). 6. Indusium(X 20). 7-8. Sporangium 
with spores (X 100). 
