Taxonomy Nymphaea heudelotii. 



149 



mentary leaves, coll. Sierra Leone Boundary Commission, Dec. 22, 1891, in "small 

 streams, Luseniga, Samu." In hb. Berlin is a specimen, coll. Alex. V. Mechow's 

 Exped., No. 480, Jan., 1880, at Malange, West Africa, marked N. stellata; also coll. 

 Pogge, No. 559, Jan. 2, " auf der Ueberschwemmung ausgesetzten Stellen am Lulua," 

 and No. 558, Nov. 31, 1881, " Wassertumpel in der Campine am Lulua"; also. coll. 

 Schweinfurth, No. 2329, Oct. 30, 1869, " Land der Djue : Gr. Scriba Ghattes in der 

 Sumpfsteppe im Wasser; Bl. reinweiss." 



Var. na^a new var. (Fig. 57.) 



Sepals 4, lanceolate, obtuse, 1.2 to 2 cm. long by about 0.32 cm. wide, green out- 

 side, with small and distinct or large and diffuse black spots; nearly white within. 

 Petals 7 to 10, lanceolate, acute, shorter than the sepals, 1.5 to 1.7 cm. long, 4 mm. 

 wide, white. Stamens 11 to 14, yellow, with very short appendage, all nearly alike 

 and about half as long as the petals, apparently in two series. Stigma of 5 to 6 

 broad carpels, with short, broad styles. Fruit nearly globose, surrounded by all of the 

 floral parts. Seed gray-green, ellipsoid, 1. 3 mm. long, 0.88 mm. in diameter. 



Fig. 57. Nymphaea heudelotii nana: a, open flower, 1, 2, 8, 4, sepals ; b, under side of leaf; 

 c, flower pressed on one side showing outside of sepals; <J, stamen; twice natural size. 

 Drawn by J. Pohl from specimens of Baum's No. 655 in hb. Berlin, by kind permission of the 

 directors. 



Leaves orbicular, 2 to 3.1 cm. in diameter; pelta 1 mm.; entire, green above, red 

 beneath, with black specks, somewhat coriaceous; primary veins 5 to 6, depressed; 

 length of principal area : length of radius = 3:4; sinus margins straight, diverging, 

 lobes rounded. 



Plant glabrous throughout; petioles and peduncles very slender, 15 to 36 cm. 

 long. Caudex an ovoid or globose tuber. 



N. Guineensis, Gilg 1903. Baum 1902. Not Sch. & Th. 1829. 



Distribution and Types. Coll. H. Baum, No. 655, Jan. 17, 1900, Kunene- 

 Zambesi Expedition, " am linken Longa-Ufer bei Minnesera, 1250 m. ii. M., in flachen 

 sumpfigen Graben, selten." " Eine Miniatur-Nymphaea mit weissen wohlriechenden, 

 hochstens die Grosse eines Markstuckes erreichenden Bliiten." Seen in hbb. Berlin, 

 Delessert, British Museum, Kew, Munich. 

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