ICONES FILICUM SINICARUM 
PEAT 73 
LEPISORUS ANGUSTUS Ching 
POLYPODIACEAE 
LEPISORUS ANGUSTUS Ching, Bull. Fan Mem. Inst. Biol. 4: 86 (1933). 
Polypodium lineare var. Thunbergianum f. caudato-attenuata Takeda, Notes, R, Bot. Gard. 
Edinb. 8: 269 (1915). 
Rhizome rather thick, wide-creeping, densely scaly; scales as in L. Thunbergianus 
(Kaulf.); frond distant, narrowly linear, 20 cm or longer, about 0.5. cm broad, margin 
narrowly linear, 20 cm or longer, about 0.5 cm broad, margin narrowly revoluted; texture 
soft, subcoriaceous, color pale green; sori oblong-elongate, closely placed between the 
midrib and margin... - 
Hupeh: E. H. Wilson 2642. Yunnan: Szemeo, Henry 10062A; Mengtze, Henry 
9194B. Szechuan austro-occid: Opien, T. F. Lou 171, 107 (type), Sept. 21, 1929. Che- 
kiang: Tien-mo Shan, S. S. Chien 170 (1920). 
The affinity of this species to L. Thunbergianus (Kaulf.) is sufficiently clear, 
to which it was raferred as forma caudato-attenuata by Takeda, from which it 
differs in extraordinarily slender habit with caudato-atteunate leaf-apex, and in 
elongate sori. 
Plate 73. Fig. 1. habit sketch (natural size). 2. peltate paraphysis from a sorus (X50). 3. 
scale from rhizome (x50). 
