ICONES FILICUM SINICARUM 
PLATE 122 
HYPODEMATIUM FORDII (Baker) Ching 
POLYPODIACEZ 
HYPODEMATIUM FORDII (Baker) Ching, comb. nov. : 
Nephrodium Fordii Baker, Journ. Bot (1889) 177; Dunn & Tutch. Fl. Kwangt. & Hongk. 348 
(1912). 
Dryopteris crenata C. Chr. Ind. Fil. 258 (1905), pro parte. 
Dryopteris Fordii Ching, Sinensia 3: 330 (1933). 
Dryopteris crenata var. Fordii C. Chr. Ind. Fil. Suppl. II]. 86 (1934). 
Rhizome slender, creeping, densely scaly; scales linear-lanceolate, golden 
brown, to 2 cm long; frond approximate, stipe 20-30 cm long, straminous, glossy, 
flexuose, the swollen base densely scaly, lamina deltoid-pentagonous, 4-pinnatifid; 
pinne 6-9-jugate, petiolate, the basal ones much the largest, deltoid, short-acu- 
minate; pinnules 6-jugate, petiolulate, deltoid-oblong, acute, base cordate; pinnules of 
2nd. order oblong-ovate, the lower ones shortly petiolulate, the upper decurrent, 
deeply pinnatifid, with 3-6 pairs of oblong, rounded serrate or lobato-incised seg- 
ments; texture thin herbaceous, both sides shortly glandular hairy; veins distinct, 
free, pinnate; sori rounded, dorsal on veinlets, indusium thin, membranaceous, 
gray, glandular hairy, rotundo-reniform, attached by a deep sinus, margin glan- 
dularly ciliate. 
Kwangtung: North River, C. Ford 104 (type), Dec. 1888; Shiuhing, Ting- 
wu Shan, S. P. Ko 50597, June 12, 1930. 
This is a decidedly distinct fern, known so far only from Kwangtung, 
differing from the preceding species in its gracil habit, thinner leaves, slender stipe 
almost twice as long as lamina, very membranaceous grayish, smaller indusium 
with glandular margin, and in its decidedly different type of hairs, which are not 
needle-like, but only shortly glandular with rounded or clavate, lemon-yellow en- 
larged apices. Dunn an Tutcher (loc. cit.) have distinguished this fern from the 
preceding by its ‘‘acute ultimate segments’’, neglecting altogether the characters as 
noted above 
Plate 122. Fig. 1. Habit sketch (natural size). 2. The swollen basal part of stipe (natural size). 
3. Ultimate pinnule, showing venation and sori (x 7). 4. Ifdusium (x 30). 5. Scale from the swollen 
base of stipe (x 10). 6, 7,8. Cross sections of rhizome (x 8). 9. Cross section of the swollen base of 
stipe (enlarged). 10. Cross section of the upper part of stipe (enlarged). 11. Glandular hairs from the 
underside of lamina (enlarged). 12. Spores (enlarged). 
