ICONES FILICUM SINICARUM 
PLATE 139 
ADIANTUM EDGEWORTHII Hooker 
POLYPODIACEZ 
ADIANTUM EDGEWORTHIL Hooker, Sp. Fil. 2: 14 t. 81B (1851); Syn. Fil. 472 (1867); 
Tée, Gen. Fil. 114 (1852); Moore, Ind. Fil. 25 (1857); Bedd. Ferns Brit. Ind. 
t. 17 (1865); J. Sm. Hist. Fil. 274 (1875); Christ, Bull. Soc. Bot. France 52: 
Mém. 1. 61 (1905); Bull. Acad. Géogr. Bot. (1906) 126; ibid. (1910) 12; GC: 
Chr. Ind. Fil. 26 (1905); Suppl. III. 19 (1934); Acta Hort. Gothob. 1: 47 
(1924); Contr. U. S. Nat. Herb. 26: 310 (1931). 
Adiantum caudatum var. Edgeworthii Bedd. Handb. Ferns, Brit. Ind. etc. 84 (1883). 
Adiantum caudatum var. rhizophyllum (Wall) Clarke, Trans. Linn. Soc. II. Bot. 1: 453 (1880), 
non Ad. rhizopnyllum Sw. 
Adiantum Guilelmi Hance, Journ. Bot. 5: 261 (1867). 
Adiantum Spencerianum Cop. Phil. Journ. Sci. 1: Suppl. II. 154 t. 11 (1906); C. Chr. Ind. Fil. 
Suppl. I. 4 (1912). 
Rhizome short, erect, sparcely scaly at apex; scales black, lanceolate, subu- 
late towards tip, rigid; fronds fasciculated, several together, stipe terete, glossy, 
castaneous, 10-18 cm long, wiry but firm, glabrous above scaly base, lamina linear- 
lanceolate, 10-23 cm long, 2-2.5 em broad; pinne 10-40-jugate, patent, basal ones 
somewhat smaller, deflexed, uppermost ones gradually diminished towards apex, 
which is sometimes elongate and rooting, all shortly petiolate, dimidiate, variable 
in size, apex rounded, anterior inner base truncate, margin more or less lobato- 
incised, in sterile ones cut nearly half way down into 3-5 oblong, roundish or bifid 
segments on the outer margin; texture thin herbaceous, glabrous in all parts; veins 
fine, flabellately forked; sori several to each pinna, indusium laterally oblong or 
subreniform, brown, glabrous. 
Yunnan: San-tchang-kisu, Hokin, Delavay 1714; Chouany-che-tesu near Ta- 
pin-tze, Delavay 7; Ma-eul-shan, Delavay 1189; Mekong, Handel-Mazzetti 8508 (1914- 
18); Maire 1390, 2736; Forrest 10787; Mengtze, Hancock; Szemeo, Henry 12821; Tali, 
Mo-che-tchin, Delavay 1200; Schneider 2791; Ducloux 13, 171 1886; Cavalerie 1918, 
1903, 1570, 4715, 7070; environs de Yunnan-sen, Ducloux 5; environes de Tengyueh, 
J.F. Rock 7970. Szechwan: Wilson 526, 5258; Mt. Ying Shan-luan, W. Fernusson 
(1910); Yien-pien Hsien, 7. T. Yui 1688; Nin-yuan Hsien, Lu-shan, Harry Smith 
1797. kKweichow: Kiang-long, Michel 994. Shantung: Tai-shan, | Clemens 1307 
(1912); Jacob 20. Hopei: Peiping mountains, Hancock, Sept. 26, 1875; S. W. Wil- 
liams 13483 in herb. Hance; Bushell: Bretschneider 77; WR. Carles 235. 6. LE 206 
in herb. Tsin-Hua Univ.; Changli, Mrs. Clemens 6022, 6022B, June 28, 1913; Mia 
Fan Shan, C. 1. Li 32178, July 17, 1932; Hsing-lung Shan, 7. N. Liou, Sept. 15, 
1930. 
Formosa: Hancock 118. 
Indo-China: Hermera, F. Neuton 1080. 
N. W. India: Luni valley, alt. 5,000 ft., Edgeworth (type), common. 
Also the Philippines. 
This pretty distinct fern belongs to the group of A. caudatum L. with which 
it has not infrequently been confounded, and from which it differs in much less 
divided pinne and naked leaves. Very variable in size and dimension of pinne; 
Specimens from North China are generally of smaller size in every repect. 
Plate 139. Fig. 1. Habit sketch (natural size). 2. The same, a smaller form (natural size). 3. 
Pinna (x 5). 4. Scales from rhizome (x 24). 
