268 filices (Carruthers). [Pteris 
Sange, 2000 to 2500 ft. ; rare in the rest of Angola. In fr. May to 
July 1855 and 1856. No. 133. 
BtTMBO.— 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 Chad da Xella and Arruial do Caionda. not common except 
iu one locality, Oct. 1859. No. 179 
3. P. quadriaurita Retz. Obs. Bot. Fasc. vi. p. 38 (1791). 
St. Thomas. —In shady humid wood, on rocks about 1200 ft., 
frequent but not in fruit. Dec. I860. No. 54. 
GOLUNGO Alto. — 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. 137'?- In humid shady palm forests 
on the right side of the river Cuango ; in fr. July 1855. No. 138- 
3 to 4 ft. high. 
4. P. fiabellata Thunb. Prod. PI. Cap. p. 172 (1800). 
Huilla. — Not infrequent in marshy woods between Lopollo and 
Humpata ; March and April I860. No. 177. 
5. P. aquilina Linn. Sp. PI. p. 1075 (1753). 
St. Thomas.— Frequent in the plantations of Cnfea arabica near 
Fazenda de Monte Caffe ; 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. /? lanuginosa. 
Prince's Island. — In woods on Pico de Papagaio, frequent : Sept. 
1853. No. 18. 
Sierka Leone. — Frequent in upland woods behind Freetown ; 
Sept. 1853. No. 6- 
Forma glabrior. 
St. Thomas. — In woods on lands neglected after cultivation ; Dec. 
1860. No. 57- 
Hun. la. — In neglected fields, now covered with wood, between 
Monino and Lopollo ; Feb. and April 1860. No. 180. 
Var. y caudata. 
Oolungo Alto. — In upland fields formerly cultivated of Alta 
Queta, and frequent on the dry plains of Sobato de Bnmba ; May and 
June 1856. No. 134. 
6. P. biaurita Linn. Sp. PI. p. 1076 (1753). 
Siekra Leone. — 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 Willd. 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. 
