ICONES FILICUM SINICARUM 
PLATE 197 
COLYSIS HEMITOMA (Hance) Ching 
POLYPODIACE 
COLYSIS HEMITOMA (Hance) Ching, Bull. Fan Mem. Inst. Biol. 41 326 (1933). 
Polypodium hemitomum Hance, Journ. Bot. (1883) 269; C. Chr. Ind. Fil. 532 (1905). 
Poly podium macro phyllum var. fokiense Cop. Phil. Journ. Sci. Bot. 3: 283 (1908). 
Polypodium sp. nov. Wu. Polyp. Yaoshan. in’ Bull. Dept. Biol. Coll. Sci. Sun Yatsen Univ. No. 
3: 316 t. £49 (1932). 
Rhizome wide-creeping, densely scaly: scales fusco-brown, lanceolate from rounded 
dentate base, thin, clathrate; frond far apart, stipe 20-25 cm long, (half as long and broad- 
ly winged throughout in sterile leaves), straminous, sparcely scaly, winged half way down, 
lamina broadly lanceolate, acuminate, generally with hastate base, thence broadly decur- 
rent downward, entire or more frequently with 1-2 pairs of lanceolate, horizontally patent 
lobes, or sometimes (as in type) regularly lobato-laciniate with 5-6 linear-lanceolate lobes 
on each side, margin entire, but undulate; texture herbaceous, glabrous above, more or less 
sparcely scaly on veins and costa beneath when young; venation distinct, lateral veins ob- 
lique, flexuose, veinlets anastomosing along main vein in one row of elongate areole with 
divaricate included veinlet; sovz linear, flexuose, extending from costa to margin, often in- 
terrupted. 
Kwangtung: Lien-chow, B. C. Henry (1881), 22104 in Herb. Hance (type); ibid., 
Fak Shan, C. L. Tso 22626 (typical), Oct. 5, 1930; Lung-tau Shan, Iu village, To & Tsang 
12159, 12231, May 27, 28, 1924; ibid. Ku Koong, Y. K. Wang 31688; North River, Lan- 
fang Kan, N. K. Chun 5824; Yintak, C. L. Tso 22626; Lokchong, Kook Kiang, S. P. Ko 
50217; Y. K. Wang 31481; N. K. Chun 43036. Fukicn: Central kart, S. T. Dunn 3894. 
Kwangsi: Yao Shan, S.S. Sin et K. K. Wang 102; ibid., S. S. Sin 3761 (f. integra); May 26, 
1928, ibid., Y. J. Wang 5209, 5309, 5342, 113. 
A peculiarly distinct endemic fern, only related to C. Wrighttt (Hk.) Ching, differ- 
ing in hastate or lobato-laciniate lamina on a long and broadly winged stipe, and green 
color of leaves with less undulate margin. There is an entire-leaved form (f. imtegra) 
which resembles C. Wrightii so closely that it can be distinguished from that species only 
by proportionally short broad lamina rather suddenly narrowed towards base and much 
longer stipe, which is generally winged only half way down. 
Plate 197. Fig. x. Habit sketch, representing typical form (natural size). 2. The same but 
with only 1-2 lobes on each side (natural size). 3. Portion of lamina, showing venation and sori ( x 1.5). 
4. Scale from costa beneath (x 40). 5. The same, from stipe (x 40). 6. The same, from costa beneath 
(x 40). 7. The same, from veinlet beneath, intermixed with sorus (x 40). 
