270 ACROSTICHUM, § GYMNOPTERIS. 



whole pinnse, or frequently forming a broad marginal line on 

 the upper portion of the half-changed pinna, or rarelj^ form- 

 ing a narrow marginal line more or less covered by the re- 

 flected margin giving a pteroid character. — Hook. Gard. Ferns, 

 t. 28. Neurocallis pra^stantissima, i^ee, ^cro5/. p. 89. t. 52. 



Hab. West Indies, apparently vei y local : Gnadeloupe, L Herminier, in Herb, 

 nostr. Dominica, Vr. Imray. — One of the finest of the many fine West Indian 

 Ferns. 



145. A. (Chrysodium) aureo-nitens, Hook.; caudex a short 

 erect tufted-rooted rhizome very paleaceous at the apex, 

 whole plant except the upper side of the fronds densely 

 clothed with a mass of auieo-nitent imbricated lanceolate 

 subulate glossy toothed scales, fronds of two kinds coriaceo- 

 carnose ; sterile ones simple 3-4-5 inches long obovato-spa- 

 thnlate entire tapering below into a short stipes ; /i?r/z/e frond 

 pinnate stipitate, stipites 3-4 inches long, pinnae few 6-9 

 scarcely an inch long the largest of them linear-oblong ob- 

 tuse, the sori concealed by the copious scales. — Acrostichum 

 (Neurocallis) aureo-nitens, Hook. Ic. PI. t. 933. 



Hab. Galapagos, Cnmhirj, n. 109, Capt. Wood, Dr. Andersson.—k most re- 

 markable Acrosticlioid Fern, quite unique of its kind, and peculiar, as it appears, 

 to the Galapagos Islands. 



§ 12. Gymnopteris. — Fronds dimorphous, simple, lobed or pinnatijid or pin- 

 nate. Veins pinnate from the casta, the rest compoundly anastomosing, more 

 or less hexagonal, including simple or branched and divaricating free veinlets. 

 — Gen. Gymnopteris, Fee. Anapausia, Pr. Moore. — (This corresponds in 

 venation and a good deal in habit with Phymatodes among Polypodiea.) 



146. A. (Gymnopteris) Gaboonense, Hook.; caudex creep- 

 ing sparingly paleaceous with dirty-brown small subulate 

 scales, stipitesnumerousapproximate 6-7inches long sparingly 

 paleaceous at the base, of the fertile fronds twice or thrice as 

 long, fronds simple; sterile ones firm-membranaceous 12-14 

 inches long 3-3^ inches broad ovato-lanceolate acuminate 

 and proliferous at the apex moderately attenuated at the base 

 entire or sinuate at the margin dark blackish-green, costa 

 prominent beneath, venation very distinct, costules horizontal 

 wide apart connected by many transverse curved veins form- 

 ing a series of long narrow costal areoles free from veins or 

 slightly veinleted, the rest forming several wide arched 

 areoles filled with a network of irregular areoles with or 

 without an included veinlet, veining near the margin free ; 

 fertile frond 4-6 inches long 1-H i^ich wide lanceolate sub- 

 entire or sinuato-piiinatifid. 



