268 FiLiCEs (Oarruthers). [Pteris 



Sange, 2000 to 2500 ft. ; rare in the rest of Angola. In fr. May to 

 July 1855 and 1856. No. 133. 



Bumbo.— By rivulets in the shady primitive woods of the Serra da 

 Xella ; Oct. 1859. No. 204. 



2. P. cretica Linn. Mantissa, p. 130 (1767). 



Bumbo. — In shady places beside rivulets in the Serra da Xella 

 between Chao da Xella and Arruial do Caionda. not common except 

 in one locality, Oct. 1859. No. 179 



3. P. quadriaurita Rftz. Obs. Bot. Fasc. vi. p. 38 (1791). 



St. Thomas.— In shady humid wood, on rocks about 1200 ft., 

 frequent but not in fruit. Dec. 1860. No. 54. 



GOJA'NGO Ai/ro. — In the drier woods of Alta Queta : May 1855. 

 Aug. 1855. No. 137- At the falls of Capopo, Sobado de Bumba ; 

 young plants Aug. 1855. No. 137«. In rabbit burrows in the forest 

 of Mussengue, June 185G. No. 137t^- In humid shady palm forests 

 on the right side of the river Quango ; in fr. July 1855. No. 138. 

 3 to 4 ft. high. 



4. P. flabellata Thunb. Prod. PI. Cap. p. 172 (1800). 

 HuiLLA. — Not infrequent in marshy woods between Lopollo and 



Humpata ; March and April 1860. No. 177. 



5. P. aquilina Linn. Sp. PI. p. 1075 (1753). 



St. Thomas. — Frequent in the plantations of Cnffea arahica near 

 Fazenda de Monte Gaffe ; without fr. Dec. 1860. No. 59- 



This is a glabrous plant growing vigorously in cultivated ground, 

 which Dr. Welwitsch was inclined at first to recognise as a distinct 

 species. 



Var. p lanuginosa. 



Prince's Island. — In woods on Pico de Papagaio, frequent ; Sept. 

 1853. No. 18. 



SiEKKA Leone. — Frequent in upland woods behind Freetown ; 

 Sept. 1853. No. 6. 



Forma glcthriw. 



St. Thomas, — In woods on lands neglected after cultivation ; Dec. 

 1860. No. 57. 



HuiLLA. — In neglected fields, now covered with wood, between 

 Monino and Lopollo ; Feb. and April 1860. No. 180. 



Var. y caudata. 



GoLUNCio Alto. — In upland fields formerly cultivated of Alta 

 Queta, and frequent on the dry plains of Sobato de Bumba ; May and 

 June 1856. No. 134. 



6. P. biaurita Linn. Sp. PL p. 1076 (1753). 



Sierra Leoxe. — Not infrequent in moist places by the rivers near 

 Freetown ; Sept. 1853. No. 7. 



Prince's Island. — Near rivers among palms near the shore ; Sept. 

 1853. No. 226. 



7. P. atrovirens WiUd. Sp. PI. v. p. 385 (1810). 



Prince's Island. — In very shady woods of Pico de Papagaio ; Sept. 

 1853. No. 22. 



Golungo Alto. — Not infrequent in dense woods near Canguera- 

 sange ; Oct. 1854 and Sept. 1855. No. 139. 



