37 



p. 114. — Falk Beitr. II, p. 120. — Gilib. Exerc. phytol. II, p. 423. — 

 Stephan Fl. mosq. No. 109. — Sikvers in Pall. n. nord. Beitr. VII, p. 268. 



— Georgi Beschr. d. Buss. B. III, 4. p. 746. — Jundz. Fl. lilhuan. p. 48. — 

 Mart. Fl. mosq. p. 31. — Besser. Enum. p. 8. 52, No. 180- — Luce Fl. osil. 

 p. 397. — Hofft Cat. Kursk. p. 12. — Ledeb. Fl. alt. I, p. 158. — Eichw. 

 Skizae p. 126. — Lessing in Linnaea IX, p. J58. — Claus Ind. des. in 

 Gobel It. II, p. 314. — Weinm. Fl. petropol. p. 20. — Fleisch. et Lindem. 

 Fl. d. Ostseeprov. p. 66. — Wirzen Casan No. 654. — Nylander Spicil. 

 pl. fennic. I, No. 21. 



P. lucidum. Guldenst. It. I. p. 76. 108. 



P. serratum. Weber Prim. fl. holsat. p. 16. 



P. Proteus lucens. Chamisso et Schlecht. in Linnaea II, p. 197. 



P. foliis lanceolatis, in petiohim desinentibus. Gmel. Fl. sib. III, p. 34, No. 25. 



/J. foliis angustioribus margine sublaevibus. 



P. longifolius. Gay in Poir. Encycl. meth. Suppl. IV, p. 535. — Fleisch. et 

 Lindem. Fl. d. Ostseeprov. p. 66. 



P. macropliyllus. Wolfg. in Schult. Mant. in Syst. Veg. III, p. 35S. — 

 Eichw. Skizz-e p. 126. — Tup.cz. Cat. Baikal. No. 1088. 



P. salieifolius. Wolfg. in Schult. /. c. p. 355. — Eichw. Skizze p. 126. 



P. lanceolatus. Eichw. Skizz-e p. 126? (An etiam Smith? v. Poiret?) 



t foliis superioribus ovato-lanceolatis lucidis planis in petiolum attenuatis; in- 

 ferioribus angustioribus longissime acuminatis. 

 P. cornutum. PkEsl Fl. cechica p. 37. 

 Hab. in Rossia [ubique (J. G. Gmel., Falk)] sept en trionali [Fennia (Kalm, 

 NyLANDER)]. media [Pctropoli (Gorter , Weinm.) , Esthonia (Fleisch. et 

 Lindem.), ins. Osilia (Luce) , Livonia ! et Curonia (Fleisch. et Lindem.), 

 Lithuauia! (Gilib., Jundz. , Wolfgang pl. exs. , Eichw.), Volhynia (Bksskr, 

 Eichw.), Kursk (Hofft), Mosqua (Stephan, Mart.), Wiatka (Lepech.), Kasan 

 (Wirzen)] et australi [Podolia (Bbsser), ad Tanain et alibi in terra Cosac- 

 corum (Guldenst.) , ad fl. Manilstli (S. G. Gmel.) , Simbirsk et Saratow 

 (Claus), pr. Astrachan! (Blum pl. exs.), ad m. casp. (Chamiss. et Schlechtend,)], 

 in Sibiria uralensi (J. G. Gmel., Fai.k, Lessing), altaica! (J. G. Gmel., 

 Falk , Fl. alt.) in deserto soongoro-kirghisico (Sievers) , baikalensi et 

 orientali (J. G. Gmel.) ; 



/?. Rossia media [Esthonia, Livonia! et Curonia (Fleisch. et Lindem.) 

 Lithuania! (Wolfgang ex Besser pl. exs. , Eichw.)] inque Sibiria 

 baikalensi! et Davuria (Turcz.). 4. 



12. P. praelongus (Wulff in Romkr Archiv III, p. 331) foliis 

 omnibus suhmersis membrnnaceis pellucidis, e basi ovata amplexicauii 

 elongato-oblongis lanceolatisve obtusis muticis, apice cucullato-confrac- 

 tis margine laevibus, pedunculis aequalibus, fructibus siccatis compres- 

 sis dorso alato-carinatis, caule ramoso. 



P. praelongus. Koch l. c. p. 779. — Kunth Enum. III, p. 133. — Chamiss. et 



Schlkchtend. in Linnaea II, p. 191. — Eichw. Skixz-e p. 126. — Weinm. 



Fl. petropol. p. 19. — Nvlander Spicil. pl. fennic. I, No. 22. 

 Hab. in Rossia sept en t r ion a li [Ostrobothnia (Nylander in litt.) , Fennia 



(Nylander)] et media [Petropoli (Chamiss. et Schlechtend. , Weinm.) , Li- 



thuania! (Wolfg. pl. exs.). 4. 



13. P. perfoliatus (L. Spec. 182) foliis omnibus submersis mem- 

 branaceis pellucidis e basi cordata amplexicauli suborbiculatis v. ova- 

 tis v. ovato-lanceolatis margine scabriusculis , pedunculis aequalibus, 

 fructibus recentibus comjiressis margine obtusis, caule subramoso. 



P. perfoliatus. Koch Syn. ed. 2, p. 779. — Kunth Enum. III, p. 133. — Gorter 

 Fl. ingr. p. 25. — Kalm Fl. fennic. No. 95. — Lepech. It. III, p. 134. 



— Falk Beilr. II, p. 120. — Guldenst. It. I, p. 49. 108. 109; // , p. 252. 

 282. — Gilib. Exerc. phytol. II, p. 422. — Stephan Fl. mosq. No. 108. — 

 Sievers in Pall. n. nord. Beilr. VII, p. 268. — Georgi Beschreib. d. Russ, 



