60 NEPIIUODIUM. 



lowest pair of primary pitiiu'C compound with two or three 

 pinnules resembling the superior pinnre, primary veins erecto- 

 patent united by arehes a little within the margin, the I'est 

 variously anastomosing and having no free veinlets in the 

 areolcs (inappendiculate), sori very copious scattered, appa- 

 rently indiscriminately, over the whole under side of the 

 piniuc and pinnules moderately large, involucre permanent 

 suborbicular and peltate but often exhibiting a shallow sinus 

 as in Sdfjenia in general. (Tab. CCXXXII.) 



Hab. Borneo, Sarawak, Thos. Lohb. — In outline and general aspect this comes 

 weTiT Aspid. semibipinnaticyn, Wall, (our n. 74) ; but it is less coinpound, has more 

 spreading piniue. and pinnules of a different colour, and the venation is consider- 

 ably different, having no free veinlets. 



Many supposed species of authors might be added to the Eua.yndium- and 

 Set f/enia- groups, if such a list could be in any way instructive. One supposed Js- 

 pidium, however, from N. Granada, I am anxious to notice here, the "■A. dicra- 

 nopterum" of Mr. Eaton, in his ' Fibces Wrightianie et FendleriansD.' The 

 excellent description and a fragment which Mr. Eaton was so good as to send me 

 from his only s[)ecimen, suffice to show that it is the same as a Polypodium (§ 

 Phymatodes) in my possession, first detected by Mr. Ptn-die, in 1845, at the 

 emerald-mines of Maso, N. Granada, specimens of which, including the stipes, 

 are G feet long ; and from Tarapota, Eastern Peru, n. 4065 ; and at foot of 

 Chimborazo, alt. 3000 ft., in woods, n. 5723, Spruce. 



3. Nephrodium, Rich. Br. 



Nephrodium, Schoif, (§ EunepJir odium of this work). 

 Hook. Gen. Fil. tab. XLVIII. B. Spheerostephanos, /. 

 Sm. (Mesochlaena, Br.) Hook. Gen. Fil. tab. XXIV.; 

 very inaccurate. Hook. Fil. Exot. tab. LXII ; very ac- 

 curate. Pleocnemia, Pr. Hook. Gen. Fil. tab. LXX. A. 

 (imperfect) and tab. XCVII. Lastrea, Pr. Hook. Gen. 

 Fil. tab. XLV. A. Haplodictyum, Pr. Abacopteris, Plec- 

 tochlcena, Camptodium, and Oochlamys, Fee. Pronephrium, 

 Pr. Arthrobotrys, Wall. Arthropteris, J. Sm. Lastreas- 

 trum, Pr. Hypodematium, Kze. Dichasium, Braiin. 



Sori dorsal, subglobose, involucrate. Involucre cordate or 

 reniform, fixed by the sinus on the back of free or combined 

 veins, or terminal on a free veinlet. Veins either free or va- 

 riously conjoined, and more or less anastomosing. — Ferns of 

 very varied form and character, seldom simple fundividedj or 

 pinnatifid, very frequently pinnate, with the pinnce pinnatifid, 

 or compound and decompound. Caudex erect or creepinf/. 

 Stipites and pinnules rarely articulated. (Fadyenia, Olean- 



