ICONES FILICUM SINICARUM 
PLATE 113 
ASPLENIUM PROLONGATUM Hooker 
POLYPODIACEA 
ASPLENIUM PROLONGATUM Hooker, 2nd. Cent. Ferns t. 42 (1860); Sp. Fil. 3: 209 
(1860); Christ, Bull. Soc. Bot. France 52: Mém. 1. 54 (1905); C. Chr. Ind. 
Fil. Suppl. III. 36 (1934); Blot, Bull. Soc. Hist. Nat. Toulouse (1932) 50. 
Asplenium rutefolium Hk. et Bak. Syn. Fil. 222 (1867); Christ, Farnkr. d. Erde 208 (1897); Diels 
in Engl. u. Prantl: Nat. Pflanzenfam. 1: 4. 242 (1899), pro parte. 
Asplenium rutefolium Franch. et Sav. (non Kze. 1836) Enum. Pl. Jap. 2: 222 (1876); Christ in 
Warburg, Monsunia 1: 72 (1900); Makino, Phan. et Pterid. Jap. Ic. Ilust. 1: t. 55 (18g9- 
Igor). 
Asplenium achilleifolium C. Chr. Ind. Fil. 99 (1905), pro parte 
Asplenium bipinnatum var. prolongatum Bonap. Notes Pterid. Pt. 14: 74 (1923). 
Asplentum elonyatum Christ, Bull. Acad. Géogr. Bot. (1910) 13. 
Rhizome short, erect, scarcely scaly; fronds caespitose, stipe 8-15 cm long, 
glabrous, pale green, lamina 10-20 cm long or Inoger, to 3 cm broad, linear, sud- 
denly terminated by a caudate, naked prolongation of rachis 2-5 cin long, and root- 
ing at the apex, herbaceous, green, bipinnate, the lower pinne only slightly shor- 
tened; pinne subsessile, numerous, oblong with unequal base; pinnules narrow- 
linear, slightly curved, obtuse, uni-nerved, the anterior basal pinnule often bi-or 
tripartite; sori one to each pinnule, linear, indusium firm-membranaceous, pale 
green, opening upward. 
Hongkong: Forbes 574; Ford (1872); Matthew 67 (1904), 368; Gibbs 1 (1928). 
Kwangtung: Lohfau Shan, C. 0. Levine 515; N. K. Chun 41483; Swatow, Thai-yong, 
Dalziel, July, 1901; Luntau Shan, Iu Village, To & Tsang 12253; Lokchong, N. K. 
Chun 43684, 42484; Sunyi, S. P. Ko 51350; Y. K. Wang 31146; Yingtak, H. Y. Liang 
61364; Yao Shan, Lokchong, S. P. Ko 51949; N. K. Chun 48015; Gerlach (without 
exact locality). Kwangsi: Lin-yin Hsien, R. C. Ching 7084; San Fang, Lu-chen, 
R. C. Ching 5751, 5817. Fukien: Kuliang, Foo-chow, H. HW. Chung 4284, 4368; Han- 
cock 6 (Kew No.). Chekiang: Pin-yang, H. H. Hu 162; Wen-chow, R. C. Ching 
1855. Hupeh: Ichang, A. Henry 3291; Wilson 2655. Szechwan: Mt. Omei, W. P. 
Fang 2553; Tchen-kou-tin, Farges 1262. Kweichow: Tsin-gay, Bodinier 2118; Gan- 
chow, Michel 1026; Pe-tsen, Cavalerie 1568, 7002; Cheng-feng, Y. Tsiang 4394, 4610, 
Tsunyi, Y. Tsiang 5300; Tuyun, Y. Tsiang 5970; Shih-tsien, Y. T'siang 4116; Van- 
ching Shan, Y. 7'siang 7783B. Yunnan: Mengtze, Hancock 37; Henry 9228, 9228B, 
9228A ; south of Red River, Henry 13659; Shweli-Salwin, Forrest 24492. 
Tsus-Sima: Wilford 838. 
Also Northern India, Tonkin, Japan and Corea. 
Type from Khasva (leg. Hooker f. & Thomson), or Mishmee (leg. Griffith). 
Wilford No. 888 from Tsus-Sima was also cited by Hooker. A well-marked species 
endemic in the temperate part of the mainland of Asia. It was unfortunate that 
Hooker himself later combined it in Syn. Fil. with A. rutefolium, a syncnym 
to A. achilleifolium Lam. frora Africa, from which our fern differs in the characters 
as first emphasized by himself in Species Filicum 3: 209. : 
Plate 113. Fig. 1. Habit sketch (natural size). 2. Pinna (x 10), 3. Scale from rhizome (x 27). 
