Ophioglossu7n] filices (Carruthers). 279 



0. lusitanicum Linn. var. gracillimum A. Br. in Kuhn, Fil. Afr. 

 p. 177 (1868). 



PuNGO Andongo. — In bare pastures ou the rocky banks of the- 

 rivers near Catete ; in fr. Jan. and Feb. 1867. Nos. 36", 36/a 



2. 0. luso-africanum Welw. in Prantl in Eicbler Jahrb. iii 

 p. 312 (1884). 



PuNGO Andongo. — In pastures on gneissose rocks of the praesidiunir 

 3500 ft. ; middle of Jan. 1857. No. 34. 



3. 0. Gomezianum Welw. in Kuhn, Fil. Afr. p. 176 (1868), 

 PuNGO Andongo. — In bare pastures near the rivers, along with 



0. rubellum Welw., near Catete; Jan. and Feb. 1857. No. 35. In 

 wet pastures, inundated in summer, on sandy mud with Xyrids, 

 Antrolepids, Eriocaulons, and sedges, high up on Morro de Lopollo 

 towards Empalanca ; in fr. April 1860. No. 161. 



4. 0. ellipticum Welw. ms. 



0. Gomezianum Welw. var. latifolium Prantl in Eichler 

 Jahrb. iii. p. 316. 



Rhizome cylindrical ; leaves ovate, obtuse or bluntly acute, 

 opaque ; median nerve not pronounced, disappearing two-thirds 

 along the lamii^a ; areolae of the centre elongated, beyond as broad 

 as long ; sporangia 5 to 8 on each row ; apex short, subacute. 



PuN(;o Andongo. — In bare pastures only on soil covering rocks by 

 the river Tangue near Catete, along with 0. ynimineum Willd., but 

 much less common ; Feb. 1857. No. 32. 



5. 0. rubellum Welw. in Kuhn, Fil. Afr. p. 179 (1868). 

 Pungo Andongo. — Frequent in bare pastures near the banks of the 



rivulets near Catete, and near Candumba on the river Cuanza ; Jan. 

 and Feb. 1857. Nos. 33, 33ft. 



6. 0. fibrosum Schum. Dansk. Selsk. Afh. iv. p. 226 (1829). 

 Pungo Andongo. — In rocky pastures in the primitive forests 



between Quibala and Cabanga ; in fr. 28 Dec. 1856. No. 31. In 

 similar pastures of Sierra de Pedras de Guinga to about 4000 ft. ; 

 March 1857. No. Zlb. 



7. 0. reticulatum Linn. Sp. PI. p. 1063 (1753). 



Pungo Andongo. — In slopes with bare pasture of Pedra de 

 S. Antonio in the prsesidium ; in fr. Dec. 1856, Jan. and Feb. 1857. 

 No. 28- In bare and bushy pastures of Pedras de Guinga ; Jan. 1857. 

 No. 29. 



St. Thomas'.s Island. — Not infrequent and gregarious in inundated 

 pastures near the rivulet banks, scarcely 10 or 20 ft. above sea-level, 

 and not far from the shore ; in fr. Dec. 18G0. No. 30. 



EQUISETACE^. 

 EaUISETUM Linn. Gen. Plant, p. 322 (1737). 



1. Equisetum ramosissimum Desf . Fl. Atlanticaii. p. 398 (1800). 

 Var. 16. Burchellii Mikle, Monogr. Equis. p. 443 (1865). 



E. Burchelii Vauch. Monogr. Preles, p. 47. t. 10. 

 Mossamedes. — Frequent in wet places at the mouth of the river 

 Giraul ; in fruit 18 July 1859. No. 176. 



