FADYKXIA. 159 



on the costa and veins, sori rather large forming a single and 

 scarcely interrupted line very near to and on each side the 

 costa. — /. Si/i. in Hook. Jonrii. Bot. iii. /;. 413 (nume only). 

 Pr. Ephnel. Bot. }). 41. — ^, longipes ; stipites 4-6 inches long 

 inferior articulation \-2\ inches long, fronds less attenuated at 

 the base, sori quite costal in one instance irregularly scattered 

 at a distance from the costa. — 7, Taihitcnns ; scales of the 

 caudex (on a small portion only in my possession) laxly patent, 

 stipites .3-4 inches long and as well as the costa very fusco- 

 ])ubescent and slightly paleaceous, fronds large 2-3 feet long 

 1 7^-2 inches broad membranaceous much attenuated at the 

 base, sori in very irregular wavy lines more than 4 of an inch 

 from the costa. An O. Sibbaldii, " Grev. },^' from Tahiti {no- 

 ticed by Kimze in his description of O. hirtella). 



Hab. Luzon, C?<»nj»i7, n. 60. ;8, Mergui, on the ground, PaWsA, ?i. 59. Moul- 

 mein, on rocky hills, Thos. Lobh. Assam, Griffith. — \ retain this species with 

 great hesitation, and I have referred other Indian forms to it with no less doid. t. 

 The var. 7 is perhaps the most peculiar in size, texture, and clothing, and espe- 

 cially in the spreading scales of the caudex ; nevertheless Mr. Moore has expressed 

 his opinion in my herbarium, that it is identical with O. Cumivgii, and I iiUi far 

 from thinking he is wrong. If so, there is less reliance to be put on the jjalea- 

 ceons covering of the caude.x than I had believed ; the texture and size of the 

 frond are very variable in all the species, and it is quite certain that no de- 

 pendence can be placed on the exact arrangement and relative position of the sori 

 with the costa. 



With the feelings of doubt I have expressed as to the specific identity of many 

 of the individuals of the genus I shall only refer to the following, of which I 

 have no certain knowledge : — O. macrocarpa,Vr. Epimel. Bot.]). 41 (Luzon, Cu- 

 ming, n. GO, in part). 0. phyllai'thron, Pr. ; Aspid., Kze. in Bot. Zeit. vi. j). 2'M ; 

 O. muscefulia, Pr. ; Aspid., Bl. Enuin. p. 141, Java. A. Moritzii, Pr. ; Aspid. Kze. 

 in Bot. Zeit. vi. p. 238, Java. 0, lomatopus, Pr. ; Aspid., Kuuze, in Bot. Zeit. vi. 

 p. 238, Java. 



6. Fadyenia, Hook. 



(Hook. Gen. Fil. tab. LVIII. B. Aspidium, Hook, et 

 Grev. {olim).) 



Sori subrotund, dorsal. Involucre large, orbicular or sub- 

 hippocrepiform, subpeltate, emarginate at the base, attached 

 to an elongated receptacle, nearly free all round at the 

 margin, parallel with the costa, directed towards tb.e apex of 

 the frond. Fe/'ns anastomosing, with free veinlets only at 

 the margin in the sterile fronds. Areoles few and large (one 

 series) in the fertile fronds, and those including a free sori- 

 ferous veinlet. — Fern of the West Indies. Caudex short, 

 ascending. Fronds G-8 inches long, simple, tufted, dhnor- 



