412 53. DIPLAZIUM. § 1. EUDIPLAZICM. 



entire; higher pinnae sessile, obliquely serrate at the margin, otherwise 

 similar to the medial ones; highest pinnae gradually passing into the lohes 

 of the terminal pinna. Texture chartaceo-herbaceous ; colour blackish 

 when dry; surfaces naked; costulae pinnate, slightly hirsute beneath; veins 

 simple, to 8-jugate in the lower, to 5-jugate in the central pinnae. So- 

 ri copious, straight, parallel, reaching + from the costulae to the edge; 

 iudusium firm, shortly fimbriate, pilose when young. — Near D. sorzogonense, 

 Pr. 



Sumatra. 



(29a) B>. sorzogonense, J»r., Tent. Pterid., 114; Copel., Polypod. 

 Philipp. 74; Bedd., Ferns Br. L, II, tab. CCXLVI; D. Woodii, Copel, in 

 Philipp. Journ., IF, 129; D. speciosum, Bl., Enum., 183; Copel., J*olypod. 

 Philipp., 74 ; Asplenium sorzogonense, Pr., Rel. Haenk., I, 45 ; Mett., Farng., 

 V, Asplen., 185; A. speciosum, Mett., 1. c. ; Athyrium sorsogonense, Copel:, 

 in Philipp. Journ., IIF, 296; var. poense, Copel., VIF, 61; var. major, 

 Bedd., Handb. Ind. Ferns, SuppL, 40. 



Rhizome short, erect, the scales brown to black-brown, lanceolate- 

 subulate. Stipes to 50 cm. long, squamose at least towards the base. 

 Fronds ovate, 25—180 cm. long, 15— 60 cm. broad, acuminate, 2-pinnatifid, 

 the rachis naked or sparingly provided with small, subulate, somewhat 

 crisped, subfribilliform squamules. Pinnae several to numerous below the 

 pinnatifid apex, approximate to spaced, linear-lanceolate, acuminate, the 

 higher adnate and more or less ascending, the following horizontal or 

 nearly so, sessile or somewhat petiolulate, the lower whether or not 

 deflexed and more distinctly petiolulate, the stalks 1 — 4 mm. long ; largest 

 pinnae pinnatifid at least ^/,-way down to the cost^, broadest at or near 

 the base. Lobes. more or less spaced, horizontal or nearly so, -oblong to 

 linear, ± 4—5 mm. broad, rounded or rotundate-truncate at the apex, 

 the lower whether or not abbreviated. Texture herbaceous to subcoriaceous ; 

 surfaces naked; veins 5—15 on a side. Sori in regular rows, reaching 

 mostly the costula and edge, the lowest commonly double. — Very variable. 



Forma typica: Small or middle-sized; medial or inframedial pinnae 

 largest, to 12 '4 cm. long, l'/^— 27j cm. broad; lobes entire, crenate, 

 serrulate or denticulate; veins Hr .5-6 on a side, simple. — Trop. Asia. 



Forma speciosa: Large or middle-sized; pinnae to 17'/2 cm. long 

 2 '/a— 4 cm. broad; veins + 7-10 on a side. — Malaya. 



Forma javanica: Large; pinnae to 25 cm. long, 4- 5 cm. broad ; lobes 

 serrate; veins ± 11 — 15 on a side. — J ava, tStcw^^ccc^. 



Forma poensis: Large; lowest pinnae to 25 cm. long, 2'/2 — 3'/j cm. 



hrnQrl — 'Rnnrvi.pn 



