ICONES FILICUM SINICARUM 
PLATE 183 
CYRTOMIUM AEQUIBASIS (C. Chr.) Ching 
POLYPODIACE 
CYRTOMIUM AEQUIBASIS (C. Chr.) Ching, Bull. Chin. Bot. Soc. 2: 99 (1936). 
Cyrtomium caryotideum var. aequibasis C. Chr. Amer. Fern Jour. 20: 51 (1930). 
Aspidium falcatum Christ (non Sw.), Bull. Herb. Boiss. 6: 969 (1898). 
Rhizome short, thick, oblique, densely scaly; scales large, ovate-oblong, acuminate, 
intermixed with linear-lanceolate ones, black or atro-brown, sparingly fimbriate, extending 
over half way up the stipe; fronds cespitose, stipe 15-25 cm long, sordid brown, densely 
scaly on the lower part, sparcely so upwards, lamina oblong, 20-40 cm long, to 15 cm 
broad, impari-pinnate; pinnae 4-6-jugate, 10-15 cm long, 2-3 cm broad, subopposite or 
alternate, lanceolate, shortly petiolate, long-attenuate towards apex, base equal, cuneate 
or subrounded, margin regularly minutely cuspidate-serrate above base, the terminal 
pinna much the largest, long-petiolate, hastately tri-lobed, base cuneate; texture thin 
chartaceous, glabrous, sparcely fibrillose-scaly on rachis, petiole and costa beneath, color 
brownish when dried; lateral veins subconspicuous, flexuose, areole generally with 2 in- 
cluded soriferous veinlets; sori rounded, scattered, indusiwm rounded, brown, coriaceous. 
Yunnan: Mengtze, Hancock 8 (type), 25, 130, in a deep dark glen, very rare; Szemeo, 
Henry 9123, 9123A, 9123B; Without locality, Handel-Mazzetti 6852; H. T. Tsai 56333; 
Long-ky, E. E. Maire (pro parte). 
An endemic species, closely related to C. caryotideum (Wall.) Presl, differing chiefly 
in lanceolate lateral pinnz with equal and exauriculate base, which varies from cuneate to 
subrounded. ; 
Plate 183. Fig. 1. Habit sketch (natural size). 2. Sorus with indusium (x 16). 3. Spores 
(x 15). .4. Scales from base of stipe. 
