ICONES FILICUM SINICARUM 
PASTE sL57, 
LINDSAYA DECOMPOSITA Willdenow 
POLYPODIACEE 
LINDSAYA DECOMPOSITA Willdenow, Sp. Pl. 5: 425 (1810); C. Chr. Ind. Fil. 393 (1905), pro 
parte; Gardens Bull. Str. Settl. 7: 236 (1934); v.A.v.R. Handb. Mal. Ferns 274 
(tg09); Merr. Enum. Hainan PI. in Lingnan Sci. Journ. 5: 12 (1927); Holttum. 
Gardens Bull. Str. Settl. 5: 66 (1930). 
For synonymy see C. Chr. Ind. 392. ; 
Rhizome rather wiry, short-creeping, matted, sparingly scaly; scales small, brown, 
of very simple structure; fronds approximate, numerous, stipe firm, erect, naked, pale 
green, 4-angular, deeply grooved above, 10-25 cm long, lamina varies from linear- 
lanceolate and simple pinnate up to 30 cm long, 2.5 cm broad to palmately divided with 
I-3 pairs of lateral linear, pinnate branches; ultimate pinnae numerous, I-2 cm long, half 
as broad, half-ovate, the lower ones often strongly decurved, the lower margin entire, the 
outer and upper shallowly lobato-incised enough to interrupt the sori; texture thin, 
herbaceous, light green and glabrous on both sides; veins anastomosing in I-2 rows of 
angularly elongate oblique exappendiculate areolae; sori marginal, one to each shallow 
lobe, linear, straight or curved, indusium greenish, entire, narrower than the outer leaf- 
margin. 
Hainan Island: Five Finger Mt., F. A. McClure 9482; Eryl Smith 1469, beside 
a stream; Hancock 119; C. Wang 85711, Dec. 20, 1933. 
Widely dispersed throughout tropical Asia to Polynesia. 
A very variable fern as to habit, leaves sometimes simple, sometimes 2-6-forked; 
the incision of pinnae are also very variable, being nearly entire in type in the herbarium 
Willdenow. 
Plate 157. Fig. 1. Habit sketch (natural size). 2a—2b. Ultimate pinnae, showing venation 
and sori (x 5). 3. Scale from rhizome (x 30). 
