25. ASPIDIUM. § 1. TEGTARIA. 198 



Btz., XV, 138; A. platyphyllum, Pr., Epim., 65; A. persoriferum^ Oopel, 

 Polypod. Philipp., 36; Sagenia repanda, Moore, Ind., 102 ■yS.jMchyphylla, 

 Moore, Rac, Flor. Btz., I, 195; Nephrodium pachyphyllum, Bk., Hk. Bk., 

 1. c, 299; Tectaria crenata, Cav., Copel., in Philipp. Journ., IF, 414. 



Caudex erect, to 10 cm. high, the scales ovate, dark-brown. Stipes 

 30 — 75 cm. long, naked, scaly towards the base. Fronds 60 — 100 cm. 

 long in the fully developed plants, to '/a ^^ broad, with an oblong- 

 lanceolate, entire to bluntly sinuated terminal pinna 10 — 30 cm. long, 

 2 — 5 cm. broad, often deeply pinnatifid in the lower part; below this 

 2 — 8 erecto-patent, entire to sinuated, acuminated, lanceolate or lanceolate- 

 oblong lateral pinnae on each side ; lowest pinnae petiolulate, often lobed, 

 forked or pinnatifid on the lower side, narrowed at the base, following 

 often simple, higher more or less adnate to the rachis ; fertile pinnae often 

 more or less contracted. Texture herbaceous to subcoriaceous ; surfaces 

 naked ; main veins straight, slightly flexuose or upcurved, distinct nearly 

 to the edge; areolae of barren pinnae irregular, copious, with many free 

 veinlets. Sori rather large, in 2 rows between the main veins, on short, 

 excurrent free veinlets. — Two ultimate forms united by intermediates. 



Forma typica: Areolae of fertile pinnae irregular, with many free 

 veinlets spreading in various directions; indusium round, peltate. 



Forma pachyphylla: Areolae of fertile pinnae subquadrangular, each 

 with a single excurrent free veinlet bearing the sorus ; indusium reniform, 

 not rarely somewhat elongated. 



Malaya to Polynesia. 



§ 2. SAGENIA 



(14) A. t<> malum, nteis. 



Simple fronds entire or sinuate; divided fronds not rarely 5-fohate 

 in the adult plant, on stout stipes to 60 cm. long. 

 Also in Malacca. 



(15) A. trifoliuiii, r. A. v. n., in Bull. Btz., 1912, VII, 4; — 

 var. compitale, v. A. v. R., 1915, XX, 6. 



Rhizome short, erect or ascending, the scales subulate-lanceolate, 

 dark-brown. Stipes subtufted, 20—40 cm. long, purplish, somewhat 

 deciduously scaly towards the base, puberulous like the central ribs of 

 Ferns and Fern Allies. 13 



