ICONES FILICUM SINICARUM 
PLATE 181 
GLEICHENIA CANTONENSIS Ching 
GLEICHENIACEZ 
GLEICHENIA CANTONENSIS Ching, Lingnan Sci. Journ. 15: 391 (1936). 
A large straggling fern to several meters tall; rhizome creeping, stipe up to 2 meters 
long, stout, thick as a finger near base, wine-colored, subnitid, glabrous, forked; primary 
pinnae opposite, to 80 cm long, 40 cm or broader, axillary bud large, densely clothed in im- 
bricate, lanceolate, atro-castaneous scales about 4 mm long, with densely fimbriate margin; 
secondary pinnae numerous, alternate, 3-3.5 cm apart, patent, shortly petiolate, up to 30 
cm long, 4 cm broad, linear-lanceolate, base equally truncato-cuneate, gradually narrowed 
towards acuminate apex, pinntifid nearly down to rachilet; segments 60-70-jugate, linear, 
suboblique, to 2 cm long (sometimes longer), 2 mm broad, margin entire but strongly 
revolute, apex obtuse, often subemarginate, separated from each other by somewhat 
broader sinuses; veinlets 20-jugate, regularly forked above base, rachis subnitid, wine- 
colored, with a few broad-lanceolate, deciduous, appressed, castaneous scales; texture her- 
baceous, glabrous and light green above, glaucescent and sparingly stellate hairy beneath; 
sori medial on anterior veinlets, consisting of 2-4 (generally 3) large, globular, pale 
lemon-yellow sporangia, receptacle elonagte, naked. 
Kwangtung: Suni, Y. K. Wang 30967 (type), roadside, July 17, 1931; Whampoa, 
one specimen without collector’s name in Herb. Rigsmuseum at Stockholm. 
This distinct and pretty fern is closely related to G. glauca Hk., from which it 
differs in enormously larger size, wine-red stipe and rachis, the petiolate secondary pinnz 
up to 30 cm long, 4 cm broad, and the longer and narrower oblique segments with strong- 
ly revoluted margin and broader sinuses. The scales covering the axillary bud are only 
half as long as those in its relative. 
Plate 151. Fig. 1, Habit sketch (natural size). 2. Segments, showing venation and position of 
sori(x 5). 3. Sporangium (x 50). 4. Scale from axillary bud (x 50). 5. Stellate hairs on the under- 
side of leaf ( x 50). 
