﻿77. PLATTCERIUM. 711 



§ 2. SCUTIGERA. 



• (8) P. coronariuiu, Desv., Prod., 215; P. hiforme, BL, Rac, 

 Plor. Btz., I, 57; BL, Flor. Jav., II, 44, tab. XVIIl; Bedd.,FernsBr., I, tab. CIX; 

 II, tab. CCXXIV; Alcicornium coronarium, Und., Bull. Torr. CI., XXXII, 594; 

 Osmunda coronaria, Kon., (oldest name); — var. cucuUatum, v. A. v. R., 

 Bull. D6p. Agr. I. N., 4908, XVIII, 25. 



Basal fronds roundish, thick, at length yellow-brown, the upper edge of- 

 ten deeply lobed. Fertile fronds single, double or clustered, to 100 — 450 c.M. 

 long, stalked, pendulous, repeatedly dichotomous; ultimate lobes ligulate, 2 — 5 

 c.M. broad. Texture coriaceous; surfaces not rarely clothed with more or 

 less numerous stellate hairs. Sori placed on a broadly reniform or Irans- 

 versally oblong, mostly convex, sometimes half-cupshaped, stalked segment 

 10 — 20 c.M. broad, springing from the lower part of the fertile fronds, in 

 the lowest sinus, 1 to each frond. 



Tar. cucullatuui: Ultimate lobes of fertile fronds dilated towards 

 the obliquely rotundato-truncate and slightly emarginate apex. Soriferous 

 segment longitudinally oblong, subcucuUate, rather slipper-shaped, the edge 

 broadly recurved. 



Malaya; Siam, Burmah; — var cucuUatum: Lingga Islands (Teysmann). 



Sori indefinite; sporangia densely covering the under surface of the fer- 

 tile fronds. 



Rhizome mostly creeping. Fronds simple, articulate or subarticulate to 

 the rhizome, uniform or nearly so, rarely exceedingly different in shape; 

 veins free or united by a submarginal veinlet or a marginal, cartilagineous 

 or decoloured strand. Hk. Bk., Syn. Fil., tab. VII, fig. 60, a — b; Diels, in 

 Engl. & Prantl, Nat. Pfl.Fam., I*, fig. 173 & 174, A, E & H. 



Pantropical, but more especially neotropical. 



Arrangement of the sections. 



§1. ACONIOPTERIS. Fronds bordered by a submarginal vein or marginal, 



diaphanous, decoloured, cartilagineous or thickened line or strand. 

 § 2. EU-ELAPHOGLOSSUM. Fronds not bordered as in § 1. 



