OF THE THIRD TANGANYIKA EXPEDITION. 21 
МУМРНЖАСЕЖ. 
(Мг. Е. С. BAKER.) 
Nymphza ovalifolia, Conard, Monograph, 150. LAKE TANGANYIKA.— Swampy 
pond at Mbete, Sept. 28. No. 31. (In flower.) Lake Nyasa.— 
Swamp at Kota Kota, June 20. No. 5. Flowers bright blue. 
Mr. Drummond, who has paid special attention to this genus, states: 
“I cannot exactly match these with anything in Herb. Mus. Brit., nor 
does it recall any specimens at Kew. The forms it seems to approach 
most closely are JN. ovalifolia, Conard, and (ex descr.) a specimen of 
A. von Mechow's, referred but rather doubtfully by Conard to his 
N. Heudelotii type. Pending more material these interesting specimens 
might be referred to N. ovalifolia, Conard.” 
М. zanzibarensis, Caspary. VICTORIA Nyanza.—Shallow water in river, 
Bukoba, April 20. No. 52. 
Previously recorded only from the Island of Zanzibar. 
N. calliantha, Conard, Monograph, 151. VICTORIA Nyanza.—Shallow water 
in harbour, Bukoba, April 19. No. 49. Flowers pink. 
Central and South-west Tropical Africa. 
N. Lotus, Linn. Forma approaching N. dentata, Schum. & Thonn. LAKE 
TANGANYIKA.—Mouth of Lofu River, Oct. 5. No. 32. 
Leaves broadly elliptieal, margin remotely undulate-dentate. Differs 
from the type in the shape and margin of the leaf. In the type the 
leaves are generally circular in outline and the margin much more 
distinetly subspinose-dentate. But the anthers are numerous and the 
connective is absent or very short and obtuse as in the type. Dr. Conard 
in his Monograph excludes the Indian and American plants which have 
previously been regarded as belonging to this species. 
North and Tropical Africa and Madagascar. 
CERATOPHYLLACEX. 
Ceratophyllum demersum, Linn. LAKE Nyasa.—In about 4 feet of water, 
near bar, June 14. No. 3 (small-leaved form). LAKE TANGANYIKA.—In 
about 4 feet of water, Niamkolo, Aug. 11. VICTORIA Nyanza.—Surface 
of weedy lake inlet to north of town, Bukoba, April 24. No. 58. 
Floating in lake in sheltered bay near Entebbe, May 1. No. 65 (small- 
leaved form). 
Widely distributed in temperate and tropical regions. 
