ICONES FILICUM SINICARUM 
PLATE 158 
ADIANTUM GRAVESII Hance 
POLYPODIACE 
ADIANTUM GRAVESII Hance, Journ. Bot. (1875) 197; Christ, Farnkr. d. Erde 140 (1897); 
Diels in Engl. u. Prantl: Nat. Pflanzenfam. 1: 4. 284 (1899); C. Chr. Ind. Fil. 
27 (1905); Dunn & Tutcher, Fl. Kwangt. & Hongk. 338 (1912) 
Adiantum monochlamys Christ (non Eaton, 1858) in Warburg, Monsunia 1: 67 (1900). 
Rhizome short, erect, densely radicose, copiously scaly at apex: scales small, linear- 
subulate, almost black, scarious along the upper margin; fronds fasciculated, many together, | 
stipe wiry, atro-brown or almost black, terete, 2-4 cm long, glabrous, lamina 2-5 cm long, 
about 1.5 cm. broad with wiry blackish rachis, impari-pinnate; pinnae 3-6-jugate, to 6 mm 
long, 3-5 mm broad, obovate or broadly obovate, alternate, patent, entire, petiolate, petiole 
2-3 mm long, capillaceous (the terminal pinna with longer stalk), articulated at the base of 
pinn; texture papyraceous, glabrous on both sides, glaucescent beneath; veins fine but 
distinct against light, flabellulately forked, extending to the narrowly cartilaginous mar- 
gin; indusium large, reniform or transversal oblong, blackish, coriaceous, one to each 
pinna, attached to the deeply notched apex, persistent. 
Kwangtung: North River, 175 miles from Canton, R. H. Grave 18831 (type); Lien- 
Chow, B. C. Henry (1881); Rev. J. Lamont, Oct. 1876; Matthew (1907), on lirnestone rocks: 
Gerlach; Yiiyuen Hsien, S. P. Ko 53788, Oct. 21, 1933. 
A very distinct and one of the most slender species of the genus, to which might 
safely be referred a series of Chinese forms known as A. Mariesii Baker from Ichang, A. 
Leveillet Christ from Kweichow, A. Greenii Ching and A. nanum Ching both from Kwangsi, 
which all differ from type only in the general outline and relative size of pinne. 
Plate 159. Fig. 1. Habit sketch (natural size). 2. Pinna, showing venation and sorus (x 10). 
3. Scales from apex of rhizome (x 40). 
