ICONES FILICUM SINICARUM 
PLATE 92 
COLYSIS LONGIPES Ching 
POLYPODIACEAE 
COLYSIS LONGIPES Ching, Bull. Fan Mem. Inst. Biol. 4: 332 (1933). 
Rhizome wide-creeping, thick, 4 mm across, greenish, densely scaly; scales fusco 
brown, clathrate, ovate, shortly acuminate, subentire; frond monomorphous, about 2 cm 
apart, stands on the same plane as does the rhizome, stipe 15-20 cm long, slender, naked, 
stramincus, base articulate, lamina 6-8 cm long, as broad or broader, ovate-deltoid, 
deeply pauci-pinnatifid, base rotundo-truncate, slightly decurrent; pinnae generally 3, or 
rarely more, on each side, the terminal one similar to the lateral, lanceolate, to 7cm 
long, 1.4 cm broad at the middle, shortly acuminate, somewhat narrowed towards the 
base, margin entire, thin, plane; ¢exture firm, coriaceous, color pale green, naked on both 
sides; veins hidden; sori rather few-paired to each segment, oblique, linear, far apart. 
Hainan: En route from Dung Ka to Win Fa Shi, C. L. Tso & N. K. Chun 43697, 
August 24, 1932, in thickets. 
Endemic in the island Hainan. A very distinct fern, of the group of C. elliptica 
(Thunberg), differs above all, in short and broadly deltoid, pauci-pinnatifid frond of 
hard, coriaceous texture, provided with unusually long stipe, which is twice as long as 
the lamina. 
Plate 92. Fig. 1. habit sketch (natural size). 2. scale from rhizome (X50). 
