POLYPODIUM, § PHYMATODES. 75 



Brack. Fil. U. S. Evpl. Evpecl. p. 46. Phymatodes, Pr. 

 Polyp. Thouinianum, Gaud, in Freyc. Voy. Bot. p. 348. /. 5. 

 f. 1 [excellent). 



Hab. Sandwich Islands, Chamisso, BeccliPij, Gaudichaud, Brackenridye, Ilille- 

 brand. Sumatra, Terschemacker, n. 33. — Variable in shape, but an ordinary form 

 is that of a skate or that of a I)at with outspread wings, for the side-lobes often 

 quite overpower the central one. I do not find that Mcttenius has noticed this 

 under his " Pobjpodium " at all. 



359. P. (Phymatodes) tridactylon, Wall. ; caudex creep- 

 ing branched (our specimens always clogged with earth) the 

 young apices only paleaceous with blackish lanceolato-subu- 

 late scales, stipites more or less apart 1-3-4 inches or 1 foot 

 long winged upwards and as well as the back of the costa to- 

 wards the base furfuraceo-squamose, fronds 2-3-9 inches 

 long f-U and 2 inches wide firm membranaceous very dark 

 dirty-green when dry often intensely black lanceolate acu- 

 minate and quite entire sometimes subhastato-trilobate or 

 tripartite or 5-fido-pinnatifid, below long-tapering into a gra- 

 dually decurrent wing upon the petiole glabrous, the margin 

 entire, segments 4-10 inches long linear- or broad-lanceolate 

 acuminate terminal one the largest, venation very conspicu- 

 ous, costules prominent Ijeneath rather wide apart extending 

 about two-thirds of the way to the margin there uniting and 

 forming large costal areoles within which the sori have their 

 origin, a second series of smaller areoles is formed nearer the 

 margin and these and the rest of the frond are filled up with 

 a network of smaller irregular areoles including free veinlets, 

 sori small not very numerous compital upon the secondary 

 veins of the primary areole. — Wall. Cat. n. 315. Hook, and 

 Grev. Ic. Fil. t. 209. Metten. Polyp, p. 104. t. 1. /. 39, 40 

 [venation). Phymatodes, Pr. Drynaria, Fee. Drynaria dubia, 

 J. Sm. in Hook. Journ. of Bot. iii. p. 397 {name only). Poly- 

 podium pteropus, Bl. Fil. Jav. p. 168. t. 76 [very good, but 

 larger than our specimens). Metten. Polyp, p. 104. t. 1. n. 36 

 and^t"]. 



Hab. India : Nepal and Sylhet. Malay Islands : Isle of Samar, Cuminr/, n. 

 324 ; Java, Blume, De Vriese and Teijsmann, n. 45 ; Mergui, OriJfitU. Moul- 

 nieine, Parish, n. 64. Chittagong, Assam, Khasya, Hooker fil. and Thomson. 

 Madras Peninsula, fVight, n. 59, 62, and 3460. Nilghiri, Beddome, n. 98 (" an 

 aquatic," and all the specimens have the appearance of being so). — A very poly- 

 morphous species, it must be allowed, as will be seen by the respective figures 

 (juoted ; but all agree in the very large and distinct primary costal areoles, well 

 represented by Dr. Grevillc, by Blume, PresI, and Mcttenius. Our largest speci- 

 mens, and sometimes the smaller and entire -fronded, have the sori very couunonly 



