ICONES FILICUM SINICARUM 
PLATE 68 
LEPISORUS SORDIDUS (C. Chr.) Ching 
POLYPODIACEAE 
LEPISORUS SORDIDUS (C. Chr.) Ching, Bull. Fan Mem. Inst. Biol. 4:78 (1933). 
Polypodium sordidum C. Chr. Contr. U.S. Nat. Herb. 26: 320 (1931). 
Rhizome rather short-creeping, hypogaeous, 3 mm. thick, blackish, young parts 
densely scaly; scales black, entirely opaque, rigid, lanceolate, acuminate, subentire or 
sparingly short-toothed, concolorous, luminae very narrow with thick, dark-colored cell- 
walls; frond approximate, 30 cm or longer, 3-4 cm broad, lanceolate, attenuated to both 
ends, stipe rather long, greenish-straminous, smocky; texture coriaceous, pale green, 
smocky on both sides; venation hidden; sori large, rounded, supramedial, superficial, in 
the upper part of lamina. 
Yunnan: Between Man Lo and Lungling, J. F. Rock 7160 (type); between 
Kambaiti and Tengyueh, J. F. Rock 75387. Szechuan austro-occid: Hon-ya Hsien, 
W. P. Fang 8498, August 21, 1930. 
A large fern of the genus, habitally resembles L. macrosphaerus (Baker), or 
L. sublinearis (Baker), differing from both in entirely black and nearly opaque rhizome 
scales and in smocky appearance of leaves. From L. sublinearis (Baker) it further 
differs in its relatively long stipe and supramedial sori. 
Plate 68. Fig. 1. habit sketch (natural size). 2. peltate paraphysis from a sorus (X50). 3. 
scale from rhizome (xX 50). 
