﻿292 52. HUMATA. § 2. LEUCOSTEClA. 



(15) H. falciliella, Copel., Polypod. Philipp., M; DavaUia falcinella, 

 Pr., Hk. Bk., Syn. PiL, 91; Pr., Rel. Haenk., I, lab. XI, fig. 2; C. Chr., Ind. 

 Fil. 



Rhizome wide-creeping, tbickly beset with stiff, spreading hairs, ferrugi- 

 neous, turning toward black. Stipes 5 — 10 c.M. long, naked. Fronds 10 — 16 

 c.M. long, 77.2 — 10 c.M. broad, deltoid, 3 — 4-pinnatifid; main rachis slightly 

 winged. Lowest pinnae inequilateral. Pinnulae oblong, cut down nearly to 

 the rachis into segments which are again deeply toothed. Ultimate segments 

 of the fertile fronds falcate-mucronate, of the barren fronds broader and not 

 so sharp. Texture subcoriaceous ; surfaces naked. Sori 2 — 6 to a lobe, placed 

 at the base of the teeth. — Ferns with the aspect of Colposoria and the rhi- 

 zome hairs of Microlepia. 



Philippines. 



(16) H. cleutarioideis, Ifiels, in Engl. & Prantl, Nat. Pfl.Fam., P, 

 210; Davallia ciciitarioides, Bk., Journ. of Bot., XXVIII, 106; C. Chr., Ind. Fil. 



Fronds decompound. Lower {linnae ovate-lanceolate, 15 — 20 c.M. long. 

 Ultimate segments linear, 2 — 4 m.M. long, the sterile ones acute, the fertile 

 ones obtuse. Texture moderately firm; rachises slender, naked, polished, brown; 

 veins 1 to each ultimate segment. Sori minute, solitary on the dilated tips 

 of the ultimate segments; indusium pale-coloured, suborbicular. 



New Guinea. 



* (17) H. pulchra, Itiels, in Engl. & Prantl, Nat. Pfi.Fam., I*, 

 209: Davallia pulchra, Don, Christ, Farnkr. d. Erde, 305; C. Chr., Tnd. Fil.; 

 D. chaerophylla. Wall., Hk. Bk., Syn. Fil., 92; Leucoslegia pulchra, J. Sm., 

 Bedd., Handb. Ind. Ferns, 52; Acrophorus pulcher, Moore, Bedd., Ferns S.I., 

 tab. X. 



Rhizome wide-creeping, clothed with broad, obtuse, adpressed scales. Stip- 

 es 10—15 c.M. long, naked. Fronds 20—40 c.M. long, 10—50 c.M. broad, 

 lanceolate-deltoid, 5 — 4-pinnatifid. Lowest pinnulae 272 — 5 c.M. long, 2 '/a 

 c.M. broad, cut down to a narrowly winged rachis into deeply pinnatifid seg- 

 ments. Ultimate lobes narrow and acute in the fertile, rather broader in the 

 barren fronds. Texture thinly herbaceous, rather flaccid. Sori copious, placed 

 at the base of the teeth of the segments, wich they about equal in breadth. 



New Guinea, Malacca; Ceylon, Noth. India, Yunnan. 



* (18) H. inimerisa, Mett. ' (not Diels), Copel., Polypod. Philipp., 

 51; Davallia immersn. Wall, Rac, Flor. Biz., I, 129; Hk., Fil. Exot., tab. 



