ICONES FILICUM ‘SINICARUM 
PLATE 226 
ADIANTUM PEDATUM Linné 
ADIANTACE 
ADIANTUM PEDATUM Linné Sp. PI. 2: 1095. 1753; Thunb. FI. Jap. 339. 1781; Sw. Syn. Fil. 121. 1806; 
Hook. Sp. Fil. 2: 28. 1851;.Hook. & Bak. Syn. Fil. 125. 1867;. Franch. Pl, David. 1: 348, 1884; Diels 
in Engl. u. Prantl, Nat. Pflanzenfam. 1: iv. 284. 1899; in Bot. Jahrb. 29: 200. 1900 (pro parte); Kom. 
Fl. Mansh, 1: 143, 1901; C. Chr. Ind. Fil. 31. 1905; in Bot. Gaz. 56: 331. 1913; Ogata, Ic. Fil. Jap. 4: 
t. I51. 1931; Kitagawa in Rep. Ist. Sci, Exped. Manch. 4: ii. 87. 1935; Tagawa in Journ. Jap. Bot. 14: 
392. 1938; Kitagawa, Lineamenta Fl. Mansh. 26. 1939; Ching in Acta Phytotax. Sinica 6: 322, 1957. 
. Adiantum pedatum L. var. glaucinum (non Christ) C. Chr. in Journ. Wash. Acad. Sci. 17: 498. 1927. 
Rhizome thick, woody, short-creeping, oblique, densely radicose, and clothed at the apex with brown, 
broadly lanceolate scales; fronds caespitose, a few together, stipe 15-35 cm long, polished, chestnut-brown, 
glabrous above the base, lamina 18-35 cm long, as broad or broader, forked from the top — of 
stipe into two spreading curved main lateral branches, each having 4-6 equally spaced, simply pinnate 
linear-lanceolate pinnae on the upper side; central pinnae are the most developed, 12-28 cm long, 2.5-3.2 cm 
broad, erect; pinnules numerous, pectinate, petiolulate, patent, 13-2 cm broad, about 7 mm broad at base, 
dimidiate, broader on the upper side nearest to the rachis, apex obtuse with a few blunt teeth, the upper 
margin lobed, sometimes one-third way down; the lateral pinnae become gradually shorter and shorter 
as they go outwards, and the outermost are only 446 cm long with similar pinnules; ¢extwre thin herbace- 
ous, light green or bluish green on the under side; veins distinct, dichotomous; sori usually 3-4 to each 
pinnule along the upper margin, indusium reniform to transversely oblong. 
A widely distributed species in forests of the temperate zone in the Northern Hemisphere. In China 
specimens have been seen from the Northeastern Provinces (Manchuria), Chahar, Mongolia, Shansi, Shen- 
si (Tsing-ling Range) Honan, Kansu, W. Yunnan, Szechuan, Sikang and Tibet. 
Also in the Himalayas (alt. 2300-3000 Oe Japan, Korea, Eastern Sibiria, the USSR Far East and 
Northeastern America. 
Plate 226. 1. Habit sketch (natural size). 2. Fertile pinnule (X 3). 3. Sterile pinnule, showing lobed upper 
margin (X 3). 4. Scale from the base of stipe (X 20). 5-6. Sporangium with spores (X 100). 
