Polamogeton. 141 



P. schrotzburgensis Heer, Fl. Tert. Helv. III. (1861) 170 t. CXLVII. fig. 3 4. — 

 Schrotzburg in der Schweiz. 



P. seifhennersdorfensis P. Scifhennersdorfensis) Engelh. ap. Wentzel in Verh. 

 K. K. Geol. Reichs-Anst. (1881) 90. — Tertiär von Seifhennersdorf und Warnsdorf. 



P. semicinctus (P semicinctum) R. Ludwig, Palaeontogr. V. (1857) 86. — Tertiär. 



P. sirenum Unger, Gen. et spec. foss. (1850) 323. — Tertiär von Croatien. 



P. speciosus Ettingsh. Tert. fl. Haering. (1852) 30 t. IV. fig. 19. — Bituminöse 

 Kalke von Haering in Tirol. 



P. stigmosus (P. stigmosum) R. Ludwig, Palaeontogr. V. (1857) 8 6. — Tertiär. 



P. stiriacus Knoll in Österr. Bot. Zeitschr. LHI. (1903) 274 t. X. — Andritz bei 

 Graz in Steiermark. — Sectio Heterophylli. 



P. thalictroides Wat. PI. foss. bass. Paris (1865—66) 88 t. XXIII. fig. 19. — 

 Carpolithes thalictroides Brongt. Descr. geol. envir. Paris (1825?) 5 fig. i, 5. — Lon- 

 jumeau; Insel Wight. — An Potamogeton? conf. Schimper Trait. paleont. veg. II. 

 (1871) 469, ex Ettingshausen etiam Carpolithes Websteri Brongt. Lc. ad Potamo- 

 carpitem ducenda est; ex cl. Potonie (Palaeophyt. 326) Carpolithes Websteri autem 

 ad Folliculitem (Paradoxocarpits Nehring = Stratiotes L.) reducendus est. 



?P. Tritonis Ung. Chlor, protog. (1847) 59 t. XVIII. fig. 6. — Eocaen von Monte 

 Bolca. — Ex cl. Unger P crispo similis, sed excl. Schimper Trait. paleont. veg. II. 

 (1871) 465 dubius, an Caulerpa? 



P. Ungeri Ettingsh. Tert. Fl. Wien (1853) 10 t. I. fig. 3. — Wien. 



P. ? verticillatus Lesquereux in Heyden, Rep. Un. Stat. Geol. Surv. VIII. (1883) 

 vergl. Just, Jahresber. (1884) 2, 34; A. Benn. in Journ. of. Bot. XXVIII. (1890) 301. 

 — Tertiär der Laiamie Gruppe (Nordamerika). 



Species exeludendae vel incertae. 



P aneeps Muehlb. Cat. pl. Am. Sept. (1813) 9 nomen nudum, conf. A. Benn. et 

 Britten in Journ. of Bot. XXXI. (1893) 133. 



P bifolius Lapeyr. Hist. abreg. Pyren. Suppl. (1818) 27, conf. Benth. Cat. pl. 

 Pyren. et Lang. 113= Folium Viciae fabae. 



P. borealis Baf. in Med. Repos. V. (1811) 350, conf. A. Benn. in Journ. of Bot. 

 XXXI. (1893) 133 (= P fdiformis??). 



P. capensis Scheele ined. ex A. Bennett in Ann. K. K. Naturhist. Hofmus. Wien 

 VII. (1892) 287 (nomen solum) ex A. Bennett 1. c. nimis incompletus. Conf. p. 61. 



P. contortam Desf. Fl. atlant. I. (1798) 150 = Zannichellia contorta Cham, et 

 Schlechtd. 



P. densus Schwein, ex Beck, Bot. Un. States (1833) 368 = Helodea canadensis. 



P. epihydrum Raf. in Bot. Repos. V. (1811) 350, conf. P Nuttallii p. 56. 



Nota. Multa nomina Rafinesqueana dubia sunt, etiam P. epihydrum. Cl. A. Bennett 

 scripsit: Rafinesque dixit: »Le Potamogeton natans Mich, mon P. epihydrum*. Specimina 

 Rafinesqueana pro maxima parte peidila sunt; cl. A. Bennett unicum tantum vidit in Herb. 

 Delessert, quod (P. fluitans Arcansas signatum) ad P. Nuttallii pertinet. Ca. annis 1840—48 

 P. Nuttallii ab auetoribus americanis partim nomine P. fluitans partim nomine P. heterophyllus 

 designatus est. 



P filifolius Phil. Fl. atac. (1860) 50 = Euppia maritima. 



P. ßiformis Raf. in Med. Repos. N. York ser. 3. II. (1811) 409. 



P glaueus Gueldenst. Reisen I. (1787) 49. 



P indicus Roth ex Roem. et Schult. Syst. Hl. (1818) 516 = Aponogeton mo- 

 nostaehyus. 



P. intricatus Nolte ap. A. Benn. in Journ. of Bot. XXVHI. (1889) 297 (nomen, 

 quid? ex cl. Uechtritz, Herb. prob. -— P. pusillus var.?). P controversus Nolte ex 

 Junger ap. A. Benn. in Journ. of Bot. XXIX. (1891) 307. 



/'. latifolius Cham, et Schlechtd. in Linnaea II. (1827) 731 (Index) sphalm. (pro 

 laticaulis?). 



