84 POLYPODIUM, § PHYMATODES. 



at the base opaque smooth irregularly sinuato-pinnatifid, 

 here and there narrow segments 5 inches long are produced 

 at uncertain distances, rachis very stout semiterete at the 

 back, venation sunk but visible, costules subveniforra slightly 

 elevated very distant 1 inch apart, lateral veins unite these 

 and anastomose so as to form several large angled irregular 

 areoles, these include a network of lesser areoles which con- 

 tain free veinlets, sori rather large partially sunk and em- 

 bossed at the back irregularly scattered (sometimes confluent) 

 dorsal or compital. — Drynaria, Brack. Fil. U. S. Expl. Exp. 

 p. 51. t. 7. 



Hab. Society Islands : Tahiti, in mountain forests, Brackenridge, Barclay. 

 Bootan ?, Griffith (2-2^ feet long, quite simple and entire).— Brackenridge's de- 

 scription and figure leave nothing to be desired. It is a very remarkable-looking 

 Fern; yet I have specimens from Bootan {Griffith)&m\ from Tahiti which I hesi- 

 tate whether to refer to this or to large simple-fronded forms oi P. phymatodes. 

 Possibly these may be the normal state of P. maximum, and the latter, with its 

 very irregular and unequal segments, a sport of nature. 



373. P. (Phymatodes) offine, Bl. ; caudex creeping, stipites 

 1-1^ foot long stramineous-brown, fronds 2-3 feet and more 

 long ovate or ovato-oblong acuminate firni-membranaceous 

 deeply pinnatifid with broad obtuse sinuses, segments 4 inches 

 to a foot long (terminal one elongated) from a broad decur- 

 rent base (especially the lowest segments) lanceolate or elon- 

 gato-oblong sunk and gradually acuminated entire, costules 

 veniform forming primary rather large areoles which include 

 the sori and are divided into lesser ones which have copious 

 included free generally branched and divaricated veinlets, sori 

 rather small compital upon the secondary veins forming 2-3 

 irregular series between the costa and the margin. — Bl. Fil. 

 Jav.p. 166. t. 69. Metten. Pohjp.p. WA.t. 3.f. 22 {venation). 

 Drynaria, .7. Sm. 



Hab. Java, Blume. Luzon, Cuming, n. 97. . Cerani, De Vriese and Tcijsmann, 

 n. 319. — A very fine and apparently a rare species. 



374. P. (Phymatodes) commutatum, Bl. ; " fronds tall 

 deeply pinnatifid subdecurrent at the base membranaceous 

 glabrous, segments elongato-lanceolate acuminate entire or 

 subrepand, terminal ones gradually shorter, fertile ones nigro- 

 punctate above, sori scattered stipes subtetragonous glabrous." 

 Bl. Fil. Jav.p. 165. t. 73. 



Hab. Java, Blume. " We at first united this with P. affine, from which, how- 

 ever, it differs consideral)ly in the segments being more patent and subrepand, 



