ICONES FILICUM SINICARUM 
PEATE 74 
LEPISORUS USSURIENSIS (Regel et Maack) Ching 
POLYPODIACEAE 
LEPISORUS USSURIENSIS (Regel et Maack) Ching, Bull. Fan Mem. Inst. Biol. 4: QI (1933). 
Pleopeltis ussuriensis Regel et Maack, Mém. Acad. Sci. Petersb. VII. 4: 4. 175 (186T). 
Polypodium ussuriense Regel, Acta Horti Petr. 7: 663 (1881); Ogata, Ic. Fil. Jap. 2: pl. 
g2 (1929). 5 
Polypodium lineare var. distans Makino, Tokio Bot. Mag. 15: 60 (1gor). 
Polypodium distans Makino, Tokio Bot. Mag. 20: 33 (1906). 
Polypodium lineare var. ussuriense C. Chr. Ind. Fil. 572 (1906); Takeda, Notes, R. Bot. Gard. 
Edinb. 8: 2712 (1915). 
Polypodium lineare var. coraiense Christ in Fedde, Repert. Sp. Nov. 5: 10 (1908). 
Polypodium annuifrons var. distans Nakai, Fl. Kor. 2: 44 (1911). 
Rhizome rather slender, wide-creeping, sparcely scaly; scales appressed, atratous, 
rigid, ovate-acuminate, dentate, luminae opaque, small, with thick, dark-colored cell- 
walls; frond distant, slender, narrowly linear-lanceolate, rather long-stipitate, apex long- 
attenuate; texture coriaceous, color greenish; sov7 medium-sized, medial, far apart. 
Manchuria: Er Tiengtien Sze, P. H. Dorsett 3048 (1925); Henh-tao Hotze, P. H. 
Dorsett, 3244; Mefuv, P. H. Dorsett 4216; Kirin, Komarov 46; from Mukden to Kirin, 
James, May-August, 1886; Sching-king, J. Ross 4. Hopei: Shanhaikwan, Kiao-shan, R. 
P. Licent 1525 (1915); Tungliang, C.F. Lié W.K. Hsia 2831. Shantung: Tai-shan, 
Jacob 1846; Tsingtao, Laushan, Reymand 226, Aug. 1911; A. Engler 7038, June, 1913. 
Korea: Quelpaert, Taquet 83; Diamont Mt., Faurie 134, 112. Also Japan and eastern 
Siberia. 
A common fern in the regions noted. This is generally considered by authors as 
identical with, or as a variety of, Polypodium lineare Thunberg from warmer regions 
farther south, but differs in much slender habit, long-stipitate, narrower and distant 
leaves on much thinner rhizome, and in more widely separated, smaller, medial sori. 
Plate 74. Fig. 1. habit sketch (natural size). 2. peltate paraphysis from a sorus (X50). 3. 
scale from rhizome (X50). 
