﻿606. DICTTOPTERIS. $ 1. ARCYPTERIS. 515 



>fc.>t(. Lateral pinnae more mtmerom. (8) D. macrodonta. 



§.§.$. Fronds at least 2-pinnale. Venation ± as in Pleocnemia. 



(9) D. ferruginea. 

 a.a.a. Sort scattered irregularly. (*) 



1. Fronds simple, lobed, 3-partite or pinnatifid. 

 2. Fronds under 30 c.M. long. 



3. Under surface densely hairy; fronds simple. (10) D. vitis. 

 3.3. Under surface naked; fronds at best ternate. 



4L. Stipes naked. (11) D. labrusca. 



4. J. Stipes minutely fibrillose. (12) D. lamoensis. 



2.2. Ftonds more than 30 c.M. long. 



§. Fronds ternate. (13) D. Hancockii. 



§.§. Fronds deeply pinnatifid. 



*. Lobes ±4-5 c.M. broad. (14a) D. heterosora. 



>|c.)K- Lobes ± iO c.M. broad. (14ft) D. Bolster!. 



1.1. Fronds pinnate; pinnae entire, crenate, lobed or pinnatifid, the lowest 

 pinnatifid or forked at the base. 

 a. Pinnae paucijugate. 



/3. Lateral pinnae ± 2-jugate. (15) D. pentaphylla. 



j3./3. Lateral pinnae + 6-jugale. 



y. Lowest pinnae 2-partite. (16) D. Whitfordi. 



7.7. Lowest pinnae 3-partite. (17) D. polycarpa. 



a-.i^. Pinnae multijugate. (18) D. irregularis. 



(1) O. pteroides, Pr., Tent. Pterid., 194, tab. VIII, fig. 6 & 13; P/ie- 

 goptens Brongniarlii, Mett., Farng., IV, Phegop. k Aspid., 31; Aspidium Brong- 

 niartii, Diels, Copel., Polypod. Philipp., 35; C. Chr., Ind. Fil.; Polypodium 

 Brongniarlii, Bory, Hk. Bk., Syn Fil., 318; Tectaria irregularis, Copel., var. 

 Brovgniartii, Copel., Philipp. Journ., II, 417; P. pteroides, Pr., (oldest name). 



Fronds 60 — 90 c.M. long, 30—45 c.M. broad, the apex pinnatifid with 

 deep, lanceolate, repand lobes; below this numerous distinct pinnae, the lowest 

 15 — 25 c.M. long, lanceolate, cut ^1^ of the way down throughout into acute, 

 subentire, lanceolate lobes 1—3^2 c.M. long, '/z — 1 c.M. broad. Texture sub- 

 coriaceous; areolae copious, with few free veinlels. Sori rather small and 

 confined to the margin of the lobes. 



Malaya. 



(*) See also D. Bryantl, v. A. v. R. 

 FlUCES. 



33 



