OF ARTS AND SCIENCES. 1G3 



AsPLENiUM AsCENSlONiS. Stipes slender, tuftetl, an inch Ion" or 

 less, naked, dull brownish green ; frond 3 to G inches long, often root- 

 ing at the apex, 6 to 10 lines broad, the rhachis channelled above 

 and narrowly winged ; pinna? about 20 (15 to 25) on each side, 

 very irregular in shape (nearly as in A. fragile), in the middle of the 

 frond somewhat quadrilateral and nearly twice longer than broad, 

 often more or less deeply lobed at base on the upper side, obtuse, 

 irregularly and obtusely few-tooihed or the lower margin entire, the 

 lowermost usually round-deltoid, nearly equilateral and often lobed 

 both sides, the uppermost becoming cuneate-obovate : sori linear-ob- 

 long, oblique, 1 to 6 on each side. — This adds another species to the 

 closely allied -4. vmc/e group, intermediate between A. fragile and 

 A. vagans. It is probably the same as the A. dentatum reported by 

 Bory as collected on the island by D'Urville. Mr. Baker informs me 

 that he also finds a specimen in Herb. Kew, among their A. fragile, 

 which was given by " Don " (probably George, the younger, and col- 

 lected by him on his trip to Sierra Leone) to Lindley in 1831. 



Nephrodium molle, Desv. Specimens very variable and mostly 

 much reduced. 



Nephrodium (?) viscidum. More or less densely glandular-fibril- 

 lose throughout ; stipes from a slender creeping rhizome, brown, about 

 an inch long, bearing a lanceolate acuminate pinnate frond 3 inches 

 long ; pinnae (except the upper ones) cleft nearly or quite to the mid- 

 vein, the thin broadly oblong segments (1 to 2 lines long) obtuse, more 

 or less crenate-serrate, glandular-villous beneath. — A single speci- 

 men, not in fruit, and the genus consequently indeterminate. Though 

 strongly marked by its glandular-fibrillose character, it is not recog- 

 nized by either Mr. Baker or Prof. Eaton. The former thinks it 

 a starved Nephrodium, but "it cannot be N. Ascensionis" the only 

 species excepting the last that is known from the island. 



Gyjinogramme Ascensionis, Hook. 



Camptlopcs introflexus, Brid. 



Ehacopilum gracile, Mitt. 



Dicranella ? 



Lejeunia pterota, Taylor. 



Theloschistes chrtsophthalma, Norm., var. flavicans, Wallr. 



Parhelia saxatilis, Ach. ? 



