194 25. ASPIDIUM. § 2. SAGENIA. 



the segments, the hairs dense, minute, deciduous or persistent. Fronds 

 20 — 30 cm. long, ternate, cordate at the base ; central segment lanceolate, 

 18 — 25 cm. long, 6—9 cm. broad, blunt to acuminate, entire or 

 irregularly repand, narrowed at the base, free or connected with the 

 lateral segments ; lateral segments ascending, oblong, falcate, much smaller 

 than the central one, acuminate, the upper base cuneate, the lower 

 broadly rounded or cordate, entire to broadly lobate-auriculate. Texture 

 membranaceous to firm-herbaceous; surfaces naked; main veins arcuate- 

 ascending, veins dark-brown; areolae with free veinlets. Sori scattered, 

 numerous, small, terminal on free veinlets; indusium minute, fugacious. 



Forma typica. — Luson. 



War. coiiipitale: Sori mostly compital on anastomosing veins, 

 sometimes confluent or elongated. — Obi Island. 



(156) A., ternifolium, v. A. r. «., in Bull. Btz., 1913, XI, 3. 



Near A. trifoUum v. A. v. R. but the fronds with the leaflets less 

 different in size, the veins not dark-brown, the fertile fronds more or 

 less contracted, the sori compital, the indusia deeply fimbriate. — The 

 reniform shape of the indusium very indistinct. 



Malacca. 



(17) 4. |14»lyiMOrphuBU, Wall. 



A plant found in Java by Dr. Koorders, very probably a from of 

 this species, has the lowest pinnae pinnate at the base. 



(19 1 A. ftjobbii, Jlfc.,- Tectaria Lobbii, CopeL, in Philipp. Journ. 

 Xc, 146. 



Rhizome short, erect. Stipes tufted, + 10—30 cm. long, substram- 

 ineous or pale-greyish-brown when dry. Fronds 10—30 cm. long, pinnate. 

 Pinnae 1 — 3 on each side below the terminal one; terminal pinna linear- 

 lanceolate, T'/j — 15 cm. long, 1 — 2 cm. broad, entire, tapering gradually 

 from the middle to each end; lateral pinnae erecto-patent, the higher 

 similar to the terminal one, sessile or sometimes connected with the terminal 

 one, the lowest stalked, simple or forked in the younger or smaller 

 specimens, 3-partite, ternate or pinnate with 1 — 2 pinnulae on each side 

 in the adult or larger specimens; pinnulae simflar to the terminal pinna. 

 Texture more or less coriaceous; surfaces naked; rachis and costae 

 pubescent above; main veins very oblique; areolae with or without few 



