86 NEPHRODIUM, § LASTREA. 



Hab. Bourbon, in Herb. Hook., from Herb. Mus. Par. — My only specimen has 

 the appearance of the stipes being brol<en off at the joint. That circumstance, 

 together with the white cretaceous dots, induce me to refer it to the Arthropteris- 

 group. It is well distinguished by its large size, dark colour, pubescent fronds, 

 minute sori, toothed rather than pinnatifid, and pinnse which have two auricles 

 at the base, a superior and inferior one. 



*** Pinnate. Pinnm entire or serrated, rarely pinnatifid. Sp.AZ-i^. 



43. N. (Lastrea) Imrayanum, Hook. ; caudex ?, stipes ?, 

 frond (imperfect at the apex) 2h feet long subcoriaceo-mem- 

 branaceous pinnated, pinna3 numerous 6 inches long | of an 

 inch wide horizontally patent from an obliquely-cuneated ses- 

 sile base lanceolato-ensiform very finely serrated (not at all 

 lobed or pinnatifid) towards the apex, lower ones suboppo- 

 site subauricled, upper ones subfalcate with the lower base 

 decurrent superior base rounded, veins all pinnated, sori 

 (quite young) very minute copious dorsal or terminal on the 

 veinlets scattered, involucres cordate ? (Tab. CCXLII. A.) 



Hab. Dominica, Dr. Imray. — A very fine species, and very distinct from any 

 with which I am acquainted. The rachis is stout, firm, of a dirty-brown colour, 

 semiterete at the back. 



44. N. (Lastrea) macrotis. Hook. ; caudex short erect 

 copiously rooting, stipites tufted a span to H foot long, fronds 

 subcoriaceo-membranaceous 1^-2 feet long dark-green pubes- 

 centi-villous on both sides especially on the costre beneath 

 ovato-lanceolate acuminate pinnate, pinnfe 3-6 inches long 

 I an inch or more wide subsessile from a truncated base fur- 

 nished with a very large acuminated auricle aljove, rounded 

 beneath oblong-lanceolate acuminate subfalcate, lowest ones 

 deliexed, margins crenato-lol)ate, lower ones pinnatifid with 

 rather short ovate segments, upper ones entire, veins free, 

 but lowest veinlets very approximate, sori copious subtrise- 

 riate between the margin and the costa. involucres very hairy. 

 (Tab. CCXLII. B.) 



Hab. Eastern Peru, near Tarapota, Spruce, n. 3979. — This has somewhat the 

 habit of large specimens of N. molle, but the veins and veinlets are all free, and 

 the very large acuminated auricles, out of all proportion to the other short lobes 

 of the pinna;, are very characteristic. 



45. N. (Lastrea?) decipicns, Hook.; stipes (imperfect) 

 slender scarcely paleaceous, fronds 8-10 inches long coriace- 

 ous ovato-lanceolate acuminated glabrous pinnated pinnatifid 

 at the apex, pinucC horizontally patent 2-2.7 inches long sub- 

 falcate from a truncate or subcordate subpetiolate in auric u- 

 lated base rounded above and below narrow-oblong acuminate 



