ICONES FILICUM SINICARUM 
PLATE 144 
VITTARIA FORRESTIANA Ching 
POLYPODIACEZ 
VITTARIA FORRESTIANA Ching, Sinensia 2: 191 f. 6 (1931); C. Chr. Ind. Fil. Suppl. 
III. 194 (1934). 
Vittaria Doniana C. Chr. (non Hieron. 1915), Contr. U. S. Nat. Herb. 26: 313 (1931). 
Rhizome thick, creeping, densely scaly ; scales fusco-brown, iridescent, lanceolate 
with hair-pointed tip, distinctly reticulated; frond rather far apart, 30-35 cm long, 
1.5-2.5 cm broad at the broadest part, oblanceolate, acuminate, from one-third from 
the apex gradually narrowed and broadly decurrent along the stipe till base; 
texture fleshy in living state, coriaceous upon drying, midrib indistinct above, 
broad and prominent underneath; venation distinct against light, lateral veins fine, 
very oblique, regularly jointed each cther towards margin; sori superficial, intra- 
marginal, leaving a broad, comparatively thin, plane sterile margin, paraphyses. 
filiform, with enlarged, cup-shaped apical cell. 
Yunnan: Salwin divide, G. Forrest 18347, 35106, Sept. 1924; Northern 
Maikha-Salwin divide, G. Forrest 27062, July, 1925, on tree of dry rocks in mixed 
forest, 1,0100 ft. alt. 
Burma: Between Sadon and the Yunnan border, J. F. Rock 7423, 7496, 
7398. 
Tonkin: Chapa, Pételot 1598, 3901. 
In gross habit, our fern resembles V. scolopendria Thwaites from Malesia- 
Polynesia, but differs above all in its superficial sori; it also closely related to 
V. Doniana Hieron. of East India, which differs in much narrower and linear 
elongate leaves twice as long with thick and strongly reflexed margin. 
Plate 144. Fig. 1-2. Habit sketch (natural size). 3. Portion of frond, showing venation and posi- 
tion of sori (x 2). 4. Scale from rhizome (x 12). 5. Paraphyses from sorus (x 100). 
