22 v. nymphjeace^e. [Brasenia: 



Huilla. — Frequent and in company with Nymplima stellata Willd.,. 

 species of Utricularia, etc., between Lopollo and Quilengues, in the 

 great inland lake called Ivantala, gathered in flight, with flower and 

 fruit, in the beginning of March 1860. No. 1178. 



Welwitsch (Sertum Angolense, p. 36), remarks on this North Ameri- 

 can plant occurring in the interior of Angola, for although he searched 

 a great number of lakes in the region of the coast, yet it was only in 

 this lake, situated more than 120 geographical miles from the Atlantic 

 Ocean, and at an elevation of about 5000 ft., that he found it. 



2. NYMPILffiA Tournf., L. ; Benth. & Hook. f. Gen. PI. i. p. 46.. 



1. W. Lotus L. Sp. PI., edit. 1, p. 511 (1753); Welw. Apont. 

 p. 592, n. 115; Oliv. Fl. Trop. Afr. i. p. 52; Oaspary in Jorn. Sc.. 

 Lisb. iv. p. 321 (1873). 



The Angolan specimens belong to Oaspary's division II. angusta, . 

 and of this division he makes two sections, as under: he has 

 printed most of Welwitsch's notes. 



a. glabresoens. — Our specimens belong to Oaspary's subsection 

 b. acuminiloba, leaves shortly elliptical, glabrous, lobes prolonged- 

 acuminate, overlapping. 



Mossamedes. — Frequent in lakes at the mouths of the river Giraul 

 (in Maiombo) ; fl. and fr. July 1859. No. 1169. 



b. dentata. — N. dentata Schum. & Thonn., Beskr. Guin. PL 

 p. 249 (1827); Welw. Apont. p. 555; Welw. in Proc. Linn. Soc. 

 ii. p. 328 (1855). Leaves more or less pubescent beneath, not 

 glabrous, as stated by Schumacher and Thonning, I.e. 



Ambeiz. — Frequent in deep pools and lakes, Quizembo and Banza de . 

 Ambriz ; fl. Nov. 1853. No. 1164. 



Icolo e Bengo. — Lagoa de Quilunda, fl. 14 Sept. 1854. No. 1168. 

 Coll. Carp. 199. In the large lake LagQa de Quitundo. Seeds, June 

 1857 and July 1860, in company with Pistia, etc. Coll. Carp. 130. 



Ambaca. — In a small lake near the left bank of the river Caringa, . 

 between Dalatanda and Ambaca, in company with Ottelia, June 1855. 

 No. 1166. 



Pungo Andongo. — Common in the river Quije, in company with 

 Nymphcm stellata Willd., Ceratophyllum, and Azolla, fl. March 1857. 

 No. 1165. 



Barra do Dande. — In lakes near the banks of the river Dande ; 

 radical tubers collected Sept. 1858 : see Welwitsch, Apont. p. 592,, 

 n. 115. The most beautiful of all species of the genus, with leaves a 

 foot in diameter and even larger, and with very large violet-purplish 

 flowers. Eaten by the negroes. Coll. Carp. 200. 



The lakes, especially the smaller ones, are often so completely 

 covered with N. dentata, sometimes in company with Pistia, that it is 

 impossible to see the surface of the water. In the Lagoa de Quilunda, 

 N. Lotus, which grows there in company with Lemnacese, especially 

 Lemna arrhiza L. and Pistia, in enormous quantities, is heaped up by 

 the negroes on the banks, to serve as manure. 



2. N. malabarica Poir. in Lam. Encycl. Meth. iv. p. 457 (1797). 

 If. stellata Willd. Sp. PI. ii. p. 1153 (1799); Oliv. Fl. Trop.. 



Afr. i. p. 52 ; Oaspary, Nymphsese Angol. p. 5 in Jorn. Sc. Lisb. 

 No. xvi. (1873), cum syn. ; non ? F. Muell. If. ampla, Kotschy 



