112 , GEOEGE LAAVSON 



this uame, is described in Tlio Garden as smaller than alba, with very pointed and nar- 

 row petals. In the Flora Rossica, Dr. Ledebour quotes the occurrence of nitida in Siberia 

 on authority of DeCaudolle alone, adding, " mihi ignota." 



The Linnœan specific terra alba is a very old one, as applied to this species, which 

 had several binomial jîre-Linnœan names : Nymphaa alba, Mathiolus, 1558. N. Candida, 

 Fuchs, 1542-45. Nenvphar fœmma, Brunfels, 1532-34.' 



2. — C. TETRAGONA. Nymphœa alba minor, " Grmelin, Fl. Sibirica, IV, p. 184, t. "Il," 

 (1169), but not of Willdenow. 



Nymphœa tetragona, " Greorgi, Reise im Eussischen Reichs, I, p. 220, [1*7*75], (ex Sims 

 et ex herb. Pall.)" (DC). 



N. pygmœa, Ait., Hort. Kew, ed. 2, III, p. 203, (1811). DC, Syst., II, p. 59. Trod., 

 I, p. 116. Ledeb., Fl. Ross., I, p. 84. 



Castalia pygmœa, " Salisb., Paradisus Londinensis, t. 68." Britten, Jour. Bot., XXVI, 

 p. 9. 



Characterised by its aerate petals and eight-rayed stigma. The lateral nerves beneath 

 are described by DeCandolle as plane (which they are in alba ana nitida), but by Gmelin, 

 as canaliculate. 



3. — C. ODORATA, Woodv. «& Wood, Rees's Cyc, VI. Greene, Bulletin Torrey Bot. 

 Club, XV, p. 85, (1888). 



Nymphœa alba, "Walt., Fl. Carol, p. 155. Michaux, Fl. B.-Am, I, p. 311. 



N. odorata, (Dryander) Ait., Hort. Kewensis, ed. 1, II, p. 227 (1*789, not 1803, as staled 

 in Journ. Bot). Willd., Sp. PL, II, p. 1153, (except Gmelin's Eastern Siberian plant, 

 referred to tetragona.) (Kennedy) Bot. Repos., t 29*7, (1803). Torr. and Gr., FL, N. Am., 

 I, p. 5*7. Lawson in Miller's "Wild Fl. of America. Provancher, Flor. Canad., p. 28. 

 Macoun, Cat., p. 31. Watson, Bibl. Index, I, p. 38. 



Castalia piidica, Salisbury, Ann. Bot., II, p. 72, (1805). Britten, Jour. Bot., XXVI, p. 9. 



The Fragrant Water Lily. Wohlriecheude Seerose, Willd. 



As DeCandolle observes, this species has been much mixed up with the European C. 

 alba, which, according to Torrey and Gray, was said by Nuttall to grow near Detroit. 

 Possibly he had seen the then undescribed tuberosa there. Sixty years ago, Smith, in the 

 English Flora (III, p. 14, 1825), described the leaves ot alba as "a span wide, oval-heart- 

 shaped, with nearly parallel or close lobes at the base, their radiating veins underneath 

 not prominent, in which it differs from th'e American odorata." Dr. Caspary, after long 



' Dr. Caspary classifies tiie modifications of alba into two groups : — 1st. — Melocarpa, those whose pollen grains 

 are aculeate, filaments more slender than the anthers, rays of the stigma mostly imicuspidate, carpels numerous 

 (8-24), fruit more or less globose. 2nd. — Oocarpa, inîwhich the pollen grains are not aculeate, but granular, stam- 

 ens short with filaments about as broad as the anthers, rays of the stigma mostly unicuspidate, flavous, carpels 

 fewer, 6-14, fruit ovate. He refers to Melocarpa, N. renusta, Hentze ; N. rolv.ndifoVm, Hentze ; N. erylhrocarpa, 

 Hentze ; N. paniflora Hentze ; A', sphndens, Hentze ; N. urceokUa, Hentze, — all described in Botanische Zeitung, 

 from 1848 to 1852. In the division Oocarpa, he includes N. Candida, Presl, and of Ortman, Fl. Carlsbad ; N. 

 biradiaia, Sommerauer, and other authors; N. -semiaptera, Klinggrîeff and Deutchlands Flora, 1855 ; N. neglecta, 

 Hausleutner, (Bot. Zeit., 1850) ; N. Kostcktzhji, Palliardi, (Index Hamburg. 1852) : N. cuhogermen, Lorinser ; N. 

 intermedia. Weiker, in Reich. Fl. Sax., 1842 ; N. pauciradiata, Bunge ; N. punctata, Kar. et Kiril. ; N. Baminiana, 

 Turckczaninow, Ledebour, Fl. Ross., i. p. 743, who speaks of it as intermediate between alba and pauciradiata. 

 See also Walpers' Annales, I.e. 



