264 



J. O. HAGSTROM, CRITICAL RESEARCHES ON THE POTAMOGETONS. 



Index of Names. 



The species aeknowleds'ed are printed in fat letter. 



nhhreviatm Hagstr. — 148. 



(ibortivus Hagstr. — 05, GO. 



abundans Hagstk. — 21. 



acanlis Wahlb. — 170. 



acerosus Hagstr. — 45, 50. 



ncuminaius Ae. Bekn. — 1 24. 



acuminaius Fieb. — 122, 124. 



acuminatus Fischer, Die bayer. Potamog. etc., 1907, 



115: pusillvs L. (3. 

 acuminatvs ScnuM. — 233, 235. 

 acuminatus Waiilenb. — 250. 

 aoutifolius Fieb. — 59, 60. 

 aciitifolius Hagstr. — 256. 

 acutifolins Link. — 8, 65—75, 80, 205. 

 acutif. X fompressus ex Graebner, Potamog., in Eng- 



i.er, Pflr. 1907, 132. (= bambergensis Fiscii. ). — 



73, 74. 

 aeiUif. X obtusif alius ex Fiscii., Beitr. Kenntu. bayer. 



Pot., 1904, 377 (wabrsolieinlioli: F.). 

 acutif. X pusillus (P. sudermanicus Hagstr.). — 72, 73. 

 acutif. X zosterifolius ex Hagstr. (P. bambergensis- 



Fiscii.). — 73, 74. 

 acutus Fieb., Die Potam. Bobni. 1838, 38: obtusifolius 



M. & K., f. 

 acutus FiscH., Die bayer. Pot., 1907, 116: pusillus L. var. 

 acutus Fiscii., in E. Baumann, Veg. Untersees, 1911. 107: 



mucronatus Schr. f. 

 acutus Hagstr. — 20. 

 acutus Schlecht. — 94. 

 affinis Ar. Benn., Notes etc. in Journ. of Bot. 1882, 184: 



decipiens Nte., var. 

 affinis Boenningh., ex. Cham, et Scpil. in Linnsea, 1827, 



216. — 176. 

 africanus Ar. Benn. — 105, 124. 

 alandicus Hagstr. — 22. 

 olatus Zapalowicz, Consp. Fl. Galic. crit. I, 1906, 241: 



crispus L. V. — 60. 

 alpinifolius Hagstr. — 148. 

 alpino-natans P. Schtjltz, Jahresber. Pollicliia, 1863, 



229 (= spatMilatus Sciirad.). — 148. 

 alpinus Balbis. — 141—151, 155, 162, 179, 186, 188, 



200, 201, 208, 225, 242, 246, 2.50, 258. 

 alp. X americanus ex Graebn. 1, c, 1907, 132 (= recti- 



folius Ar. Benn.). 



alp. X Clai/lonii? ex Graebn., ]. c, 1907, 132. — 200. 

 alp. X crispus (P. renustus Bge. ). — 77, 144. 

 (dp. X gramineus (P. nericius Hagstr.). — 11, 145, 225. 

 alp. X gramin. L. graminifolius Fr. ex Almqu. — 11, 



208, 230. 

 alp. X tocews ex ASCII, et Graebner, Syn.mitt.Fl. 1, 1897, 



328 (P. Uthuanicus GOR.SKI). — 186, 225, 246. 

 alp. X lucens (P. olivaceus Bge.). — 242. 

 nip. X nutans ex Druce, Fl. Berksh., 1897, 516 {Dru- 



cei Fryer). — 146. 

 (dp. X nodosus (P. subobtusus Hagstr.). — 147. 

 (dp. X pensylvanicus {P. Champlainii Ati. Benn.). — 200. 

 alp. X perfoliatus (P. prussicus Hagstr.). — 148. 

 alp. X polygonifolius ex Ascii. & Gr., Syn. mitteleur. 

 Fl., I, 1897, 333 (P. spathulaius SciiR.). — 148. 

 (dp. X pr(Blong\is ex Ascii. &; Gr., 1. c., 317 (P. nerviger 



Woi-EG.). — 149, 258. 

 alp. X pusillus ex Hagstr. (P. lanceolatus Sm. ). — 149. 

 alpinus Bl. — 17, 23. 

 alternif alius Schur., Phyt. Fragm. in Oesterr. Bot. 



Zeitschr. 1870, 282. — 260. 

 amblyophyllns Mey. — 14, 29—30, 33. 

 americanus Cham. & SciiL. — 147, 184, 190. 

 americ. X (dpirms (P. rectif alius Ar. Benn.) = nodosus 



X Eichardsonii ex Hagstr. — 147, 148. 

 americ. X lucens (P. Rugelii Ar. Benn., Journ. Bot. 



1908, 250). — 242. 

 americ. X pensylvanicus ex Ar. Benn., 1. c, 248, 250 



(= subsessilis Hagstr.). — 190, 200. 

 americanus Koem. & ScimLT., Syst. Ill, 509 ex Ind. 



Kew. = lucens ex Ind. Kew. 

 ambiguus Gren. in Grbn. & Gode., Fl. Fr. Ill, 1855, 312: 



fluitans P = nodosus PoiK. v. Billotii (Sen.). 

 amphibius Bge. ap. Fiscii., Bayer. Pot., 1907, 132: junci- 



folius Kern. var. 

 amphibius Ae. Benn., Notes etc. in Jonrn. of Bot. 1904, 



70: amplifolius TuCK. 1 — 163. 

 amphibius FiSCll. 1. c, 45: alpinus Balb. f. 

 amphibius Fiscii., Bom. Pot. in 2 Aufl. Syn., in Mitt. 



Bayer. Bot. Ges. 1914, 106: P. Zizii M. K. f. 

 amphibius Fr., Nov. Fl. Suec. 1828, 38: gramineus L. 7. 

 amphibius Fr., I. c, 34: liicens L. '(. is Zizii M. K. f. 



coriaceus M. K. — 214. 

 amphibius Fr., 1. c, 28: nutans L. f. 



