﻿710 77. PLATYCERIUM. § 1. EUPLATYCERIUM. 



colour ochraceous- fulvous. Fertile fronds 2 — 5, narrowed gradually towards 

 the base, lo 65 c.M. long, repeatedly dichotomous, pale-coloured, flocculent, the 

 tomentum adpressed; ultimate segments rather numerous (± 16 — 20) to 

 each frond, lanceolate, ligulate or elongate-triangular, to 7 c.M. long, narrow 

 subobtuse, rostrate, involute. Sori occupying the whole under surface of the 

 ultimate segments, densely covered with a thick, whitish tomentum when young, 

 but less so at full maturity. — A plant gathered in Timor by Teysmann, very 

 probably a form of this species, has the fertile fronds very coriaceous and 

 rigid, 49 — 75 c.M. long, with the ultimate segments not rostrate, the sori often 

 reaching from the apex of the ultimate segments to considerably below the 

 highest sinuses. 



Sumbawa, Timor. 



(6) P. l¥illiiickii, Moore, Nich., Diet, d' Hort, IV, 175; Gard. 

 Chron., N. S., Ill, fig, 56; Alcicornium WiUinckii, Und., Bull. Torr. CI., XXXII, 

 596. 



Basal fronds single, erect, suborbicular and lobed. Fertile fronds triple, 

 elongate, pendulous; each frond narrowly cuueate, dichotomously forked, the 

 lobes narrow, ensiform. Sori on the under surface of the ultimate lobes. 



Java. 



* (7) P. bifurcatum, C. Chr., Ind. Fil. ; P. aldcome, Desv., Rac, 

 Flor. Btz., I, 57; Diels, in Engl. & Prantl, Nat. Pfl.Fam., P, fig. 177, A; Nich., 

 Diet, d' Hort., IV, fig. 209; Alcicornium bifurcatum, Und., Bull. Torr. CI., 

 XXXII, 594; Acrostichum bifurcatum, Cav., (oldest name). 



Rhizome thick, creeping, densely scaly, bearing the fronds in more or 

 less distant groups. Basal fronds 2 or more, roundish or cordate, imbricate, 

 convex, entire, sinuate or lobed, 10 — 20 c.M. each way, afterwards brown, the 

 lobes spreading or erect. Fertile fronds mostly 4 — 7, clustered, the stipes 

 thick, to + 5 c.M. long or longer, + erect, the fronds 40 — 90 c.M. long, 

 cuueate at the base, 2 — 5 X dichotomously branched, with about 4 — 8 ulti- 

 mate lobes, which are ligulate, flat, 10 — 20 c.M. long, 2 — 5 c.M. broad, with 

 the apex blunt or bluntish. Texture thick; colour pale-green; young fronds 

 covered with a thin, whitish or pale-reddish, + fugacious, adpressed tomen- 

 tum; areolae + hexagonal, with few free veiniets. Sori occupying + the 

 upper ^/^ of the ultimate lobes. 



Much cultivated. — Orig. loc. : Australia, New Caledonia, Lord Howe's 

 Island. 



