!c 2 The Waterlilies. 



17, lanceolate; outer one 1.7 cm. wide, sepaloid on back, its margins petaloid; whitish 

 below, shading pink in upper two-thirds, to decided rose pink in uppermost 1 cm.; 

 inner surface white in lower three-fourths, becoming rose pink at apex, and on mar- 

 gins for 1 to 2 cm. below apex ; inner petals white. Stamens about 100, yellow ; outer- 

 most stamen has filament 4 mm. wide, 8 mm. long, anther 2.5 mm. wide at base, 19 

 mm. long, appendage 6 mm. long, 1 mm. wide at base, subacute. Stigma? Fruit? 

 Leaf ovate-orbicular, entire, 13 to 28 cm. long by 9 to 23 cm. wide, pelta 0.5 cm., green 

 above. Under surface purplish on margin, shading to green in the space of 3 to 4 cm., 

 spotless. Primary veins 8 on each side, length of principal area : radius = j.y cm. : 

 10.2 cm. 



Geographic Distribution. Central and Southwest Africa. 



Types. Coll. H. Baum, Reise nach Siid-West Afrika, Kunene-Zambesi Expedi- 

 tion, No. 395, Nov. 9, 1899, " am Kubango unterh. der Kueio, 1 120 m. ii. M." Native 

 name " Amavu." In hbb. Delessert, Berlin, British Museum. Gilg (1903) adds, evi- 

 dently quoting Baum, " Bliithen weissblau. * * * Blatter sehr diinn." The pink color 

 seen in the herbaria may therefore be due to changes in drying, as some other speci- 

 mens in this collection had undergone the same change. Professor Gilg also con- 

 siders Hopfner's No. 36 from Mossamedes (in hb. Berlin) to be identical with Baum's 

 395. A specimen in hb. Kew, coll. F. D. & E. J. Lugard, Sept., 1896, Botletle River, 

 Ngamiland, Tropical Africa, appears to be the same, as also one, coll. W. P. Johnson, 

 Lake Nyassa, in hb. Kew. Baum's No. 208, Oct. 4, 1899, " an ruhigen Stellen im Oka- 

 chitanda bei Kassinga, 1290 m. u M., am Uferrand und in Einbuchtungen des Flusses, 

 auch in der Mundung und in Pfannen hinter Kassinga " (Gilg 1903), has smaller leaf 

 and flower, but more numerous floral organs. Leaf 16 cm. long by 13.5 cm. wide ; under 

 surface deep red-purple. Petals 20 to 26, stamens 115 or more. In hbb. Berlin, Deles- 

 sert, British Museum. No. 396 of Baum, from the same locality as 395, is smaller than 

 the latter, but doubtless of the same species. Flowers rose color ; petals 1 1 to 14, 4 to 

 4.5 cm. long ; stamens more than 50. Leaves very dark purple beneath. In hbb. Deles- 

 sert, Berlin. Professor Gilg (1903) considers Fischer's No. 4 (in hb. Berlin) from the 

 African lake region between Magu and Kagehi to be identical with the foregoing. We 

 place here also a specimen in hb. Kew, coll. A. Carson, 1891, at Karonga, Nyassa, hav- 

 ing flowers 10 cm. across, deep blue ; petals elliptic-lanceolate, stamens stout ; leaf oval, 

 14 cm. long by 10 cm. wide, lobes acute, overlapping, margins wavy in lower half, under 

 surface dark red-purple. 



Var. tenuis Conard. 



Leaves nearly orbicular, 7.5 to 10 cm. long by 7 to 8.6 cm. wide, green above, dull 

 dark purple beneath ; primary veins 6 ; length of principal area : radius = 3.2 cm. : 3.8 

 cm.; sinus lobes slightly diverging or overlapping, obtuse, margins nearly straight. 



Flower 9 to 13 cm. across; petals and sepals very narrow (e. g., sepal 5.75 cm. by 

 I cm.; petals 5.4 cm. by 0.8 cm., 5.1 cm. by 0.85 cm.). Sepals 4, green outside, with 

 numerous black spots; margin red-purple; inside white. Petals 14 to 17, 3.5 to 5.4 cm. 

 long, white or pale blue, rounded at apex. Stamens 33 or more, slender, yellow, the 

 outermost with filament 3 mm. wide and I cm. long, anther 7 mm. long, appendage 7 

 mm. long ; innermost stamen with filament 3 mm. long and 0.8 mm. wide, anther 3 mm. 

 long and 1.3 mm. wide, appendage 1.25 mm. long. Carpels 10. 



