HYPOLEPIS. 95 



(37) HYPOLEPIS Bernhardi. 



Rhizome creeping, stipes not articulate to it; fronds at least bipinnate, 

 thin, pubescent; veins free, sori hardly terminal, single in the sinuses, 

 protected by reflexed marginal lobes too small to cover them permanently. 

 Our species is a large terrestrial fern. 



(1) H. tenuifolia Bernh. Rhizome wide-creeping, densely glandular- 

 puberulent; stipe about 30 cm. high, maroon, shining, puberulous like the 

 rhizome but less so; frond 50 to 250 cm. high, quadripinnatifid; lower 

 pinnae ovate-lanceolate, 20 to 50 cm. long; pinnules about 10 cm. long, 

 lanceolate; pinnules of second order 2 to 3 cm. long, lanceolate, cut 

 down about to the rachis into linear-oblong, toothed ultimate divisions, 

 herbaceous, sparingly glandular-pubescent beneath, the rachises more so; 

 sori placed in the sinuses of the teeth or ultimate divisions. The 

 resemblance of this species to Xephrodium rugulosum is most striking, 

 extending to every detail except the position and protection of the sorus; 

 and in that matter I have specimens of the later species with the sorus 

 nearer the margin than usual, with the tip of the tooth somewhat curled 

 upward, strongly suggesting that these two ferns, apparently representing 

 widely separated groups, may really be the same. 



Luzon, Cuming 118, 140, 233; Benguet, Loher; Lamao River, Copeland 

 233; Mount Apo, Copeland 1130, this plant possibly distinct. 



Malaya to New Zealand. 



(38) CHEILANTHES Swartz. 



Rhizome short, scaly; fronds at least bipinnatifid; veins free; sori ter- 

 minal on their thickened ends, usually confluent at maturity, protected at 

 first or permanently by the infolded and modified (membranous) margin of 

 the frond. Terrestrial ferns, chiefly of warm and dry countries. 



1. Lower pinnae smaller than others (1) C. Boltoni 



1. Lower pinnae somewhat larger than others. 

 2. Frond glabrous, not waxy. 



3. Frond lanceolate, bipinnatifid (2) C. varians 



3. Frond deltoid, tripinnatifld (3) C. tenuifolia 



2. Frond waxy beneath. 



3. Frond and stipe chaffy (4) C. rufa 



3. Frond and stipe not chaffy (5) C. farinosa 



1. Lowest pinnae decidedly largest (6) C. argentea, 



(1) C. Boltoni Copeland. Stipes densely clustered, 15 to 30 mm. high, 

 brown-black, sparsely clothed with hairs of the same color; frond linear- 

 oblanceolate, larger ones 16 cm. high, 15 mm. broad, bipinnate, broadest 

 two-thirds of the way to the top; pinnae almost sessile, remote, larger 

 ones 8 mm. long, 6 mm. broad; pinnules 1 to 5 pairs, ovate, minute, 

 crenulate, plane when moist, curling up when dry, glabrous, very thin but 

 firm when dry; indusium interrupted. 



Malalag, Davao, on rocks along sea, Copeland 616. 



(2) C. varians Hooker. Stipes densely tufted, 5 to 15 cm. high, chest- 

 nut-brown, polished, fibrillose below, slender and brittle; frond 15 to 25 cm. 



