274 FiLicES (Carruthers). [^Nephrodium 



Prince's Island. — By springs on shady rocks near the sea ; Sept. 

 1853. No. 12. Gregarious, but in few woody places about 1500 ft. 

 between the city and Monte Gaffe ; in fr. Dec. 1860. No. 62. 



PuNfio Andongo. — Sparsely in .'<hady places of Mata de Pungo ; in 

 fr. middle of March 1857. No. 102. 



GoLUNrio Alto. — Very abundant at the falls of the river Coango in 

 shady woods. Specimens with round tubercles on the main rachis on 

 the upper or under surface of the frond are intermixed with the usual 

 forms ; in fr. Aug. 1855. No. 103. and 1036. 



A beautiful fern with caespitose stipes and fronds 3 and 4 ft. high. 

 The stipes and rachises in all the specimens collected in Golungo Alto 

 were without glandiilose hairs, while the specimens in No. 62 have them. 



Two young plants belonging probably to Nephrodium were in Dr. 

 Welwitsch's Herb. ; one, No. 131, from the banks of the river Casabala 

 Sobato de Bumba, July 1856, the other. No. 184, found near the cataract 

 of Ferrao da Sola ; April 1860. 



17. NEPHROLEPIS Schott, Gen. Fil. (1834). 



1. N. tuberosa Presl, Tent. Pter. p. 79 (1836). 

 Aspidium tuberosum Bory in Willd. Sp. PI. v. p. 234 (1810). 

 SiEKKA Leone. — Frequent on old shady walls in Freetown, growing 



with various Hepatics and species of Scytonema ; Sept. 1853. No. 8- 



Welwitsch notes that the sori in his specimens are on the margin of 

 the pinnae. 



2. N. exaltata Schott, Gen Fil. (1834). 



Golungo Alto. — Not infrequent on the old trunks of Elmis 

 guineensis and other trees between Bango and Sange ; in fr. Jan. and 

 May 1855, and June 1856. No. 144. 



Pungo Andongo. — On decaying bare trunks of Melia Bombolo 

 Welw. in the prsesidium itself ; Dec. 1856. No. 145. 



These plants are always tuberifous ; the tubers are ellipsoid, and 

 contain a dense subflavescent flesh. Welwitsch considered the speci- 

 mens to be only a variety of iV. tuberona Presl. 



3. N. biserrata Schott, Gen. Fil. (1834). 

 JV. acuta Presl, Tent. Pter. p. 79 (1836). 



Prince's Island. — In dense humid woods, frequent. Full grown 

 plants 6 to 7 ft. high ; Sept. 1853. No. 23. 



Golungo Alto. — Very common in the shady woods of Quilombo 

 Quiacatubia, about 2000 ft. altitude ; in fr. Jan. 1855. In the 

 primitive forests on palms, growing among the bases of the petioles, 

 in the Serra do Alto Queta ; in fr. June 1856. No. 108. 



Var. (3, diplotis Welw. The base of the pinnae equally auriciilate 

 on both sides. 



Prince's Island.— From 100 to 500 ft. altitude ; Sept. 1853. 

 No. 236. 



4. N. trichomanoides J. Sm, in Hk. Journ. Bot. iii. p. 413 

 (1841); in Presl, Epim. Bot. p. 44 (with descr.) (1849). 



N. repens Brack. U.S. Expl. Exped., Botany p. 209 (1854). 

 N. ramosa T. Moore, Ind. Fil. p. 102 (1858). xV. ohliterata Hook 

 (non Nephrodiimi ohliteratwni R. Br.) Sp. Fil. iv. p. 154 (1862). 



St. Thomas.— Climbing on old living trunks in woods, to about 



