ICONES FILICUM SINICARUM 
PLATE 105 
HUMATA ASSAMICA (Bedd.) C. Christensen 
POLYPODIACEZ 
HumaTA assamica (Bedd.) C. Christensen, Contr. U. S. Nat. Herb. 26: 293 (1981); 
Ind. Fil. Suppl. ITT. 112 (1934). 
Acrophorus assamicus Bedd, Ferns Brit. Ind. t. 94 (1866). 
Leucostegia assamica J. Sm. Hist. Fil. 84 (1875); Bedd. Handb. Ferns, Brit. Ind. etc. 51 (1883); 
Suppl. 13 (1892). 
Davallia assamica Baker in Hk. Syn. Fil. ed. 1. 452 (1868); ed. 2. 467 (1873); Clarke, Trans. 
Linn. Soc. II. Bot. 1: 445 (1880). 
Davallia micans Mett. ex Baker in Hk. Syn. Fil. ed. 1. 95 (1867). 
Humata micans Diels in Engl. u. Prantl; Nat. Pflanzenfam. 1: 4. 209 (1899). 
Rhizome thick, wide-creeping, densely scaly; scales large, lanceolate, acumi- 
nate, hair-pointed, spread, silvery-brown, denticulate; frond far apart, stipe slen- 
der, firm, naked, rufo-straminous, 5-10 cm long, lamina lanceolate, 15-28 cm long 
5-7 cm broad, acuminate, base hardly narrowed, tripinnatifid; pinnz 20-30-jugate, 
alternate, lanceolate-falcate, shortly petiolate, unequal at base, the basal ones 
deltoid-lanceolate, with subequal and cordate base, to 4 em long, 2.5 em broad at 
the base, acuminate, rachis narrowly winged from the middle upward; pinnules 
7-10-jugate, sessile, ovate-oblong, 1.2 cm long, 5-8 mm broad, the lower ones deeply 
pinnatifid with 5-7 segments, of which the lowest are pinnatifid, the upper ones 
3-2-dentate, rachilets with a few large, brown, broadly ovate appressed scales un- 
derneath, surfaces naked, glossy in living state; tewtwre coriaceous; veinlets hardly 
distinct, pinnate or bifurcate in segment; sor? submarginal in ultimate lobes, most- 
ly with a horn above, indusium suborbicular, broader than deep, glossy, round- 
ed and free all around, except the broad base which is attached to the leaf tissue. 
Yunnan: Shweli-Salween divide, G. Forrest 24500; South of Tengyueh, G. 
Forrest 26681, June, 1925; between Tengyueh and the Burmese border, J. F. Rock 
7312; between Kambaiti and Tengyueh, /. Ff. Rock 7580; Salwin, H. Handel-Maz- 
zettt 9564.. 
Bothan: Mishee, Griffith; Jordon (type). 
Munipore: Clarke; and also Upper Burma: Forrest 26604. 
This distinct species which was previously known only from Bothan and 
Munipore of North-western India, is very near H. Griffithiana of the same region, 
differing mainly in its lanceolate and shortly peticlate fronds and in the presence 
of a few large broadly ovate scales on the lower part of rachilets underneath. Our 
plate based upon Forrest No. 26681. 
The genus Humata is closely related to both Davallia and Leucostegia, from 
the former it differs chiefly in thick leathery, shining, pale-colored reniform or 
suborbicular indusium attached only by its broad base, generally less divided frond 
of more rigid texture and the pale-colored scales on the rhizome, from the latter, 
in somewhat dimorphous and less divided frond of more thick texture and glossy 
leathery indusium. In fact, its affinity to Leucostegia seems to be too close to war- 
rant a generic separation, particularly when the present species is-taken into con- 
sideration. 
Plate 105. Fig. 1. Habit sketch (natural size). 2. Pinnule from the middle pinna (x 8). 3. 
Scale from rhizome (x 14). 4. Scale from the lower part of rachilet underneath (x 14). 
