Rhizomes erect, short; scales bicolorous, brown or reddish brown with lighter margins, lanceolate. Fronds clustered. Stipe reddish brown, lustrous, 10-35 cm, scaly at base; scales mostly bicolorous, narrowly lanceolate. Lamina pentagonal, 8-15(-24) × 6-12(-18) cm, tripinnatifid to pinnate-bipinnatifid, herbaceous or papery when dry, abaxially with snow-white farina or rarely glabrous, adaxially glabrous; rachis and costae chestnut-brown. Pinnae 3-5 pairs, sessile, connected by broad wings, distal lobes oblong, oblong-triangular, or nearly semicircular, with narrow V-shaped sinuses between lobes; basal pair largest, 7-8 × 4-5 cm, triangular, obliquely spreading upward, 2-pinnatifid, medial pinnae rounded or bluntly pointed at tips; pinnules 4 or 5 pairs, basal basiscopic pinnule largest; second pair of pinnae shorter than basal and third ones, simple, triangular; other pairs gradually shortened distally; ultimate segments closely spaced, deltoid or ovate, broad, apex obtuse. Veins pinnate, distinct. Sori consisting of 3 to several sporangia, borne at vein tips. False indusia continuous, narrow, margins entire.

Aleuritopteris tamburii is easily distinguished from related taxa in its large fronds that are coarsely dissected and with broad, somewhat rounded ultimate segments.

Thickets, rock crevices in dry hot valleys; 1900-2700 m. S Sichuan, NW Yunnan [India, Nepal].