KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 55- N:0 5. 



265 



amphibius, Fr., I. c, 35: nitens Web. Y- 



amphibius Fr., I. c, 30: oblongus Viv. f. — 177, 180. 



amphibius Hagstr. — 153. 



amplexicaulis Kar. (is considered a syn. of perjolialus 



L.). — 254. 

 amplexicaulis Moser ap. Ar. Benn., Bern. etc. in Ann. 



Nat. Hofm. 1892, 290 (= the prec). 

 amplifolins Tuck. — 151, 163, 164, 190, 191, 198. 

 ampl. X illinoensis (P. scoliophyllus Hagstr.). ■ — 164. 

 ampl. X fluitans ? ex Graebn., Potamog. in Engler, 



Pflr. IV, 11, 1907, 133. 

 anceps, Muhlenb., Cat. pl. Amer. sept. 1813, 18: »two- 



edged pondweed»: M., for the rest not described. 

 ange mumie us Tis., Pot. snec. exs. I, n:o 24, 1894: gra- 



minens L. f. — - 206. 

 anglicus Hagstr. (coloratus X polyonif.). — 180. 

 angustatus M & K. in Röhling's Deutschl. FJ. I, 1823, 



838: natans L. '(. (may belong to P. sterilis Hagstr. 



as well as to T. nodosus Poir. The length of the 



petioles of the nppcr leaves in relation to their blades 



is not stated). 

 angustatus Wallm. — 115. 

 angustijolius Asch. & Gr., Syn. 1897, 311: alpinus Balb. 



var. 

 angustijolius Ar. Benn. ap. Asch. & Gr., 1. c, 306: po- 



lygonifolius PouRR. f. 

 angustijolius Be., Norges Fl. 1, 1861, 365: lucens L. v.? 

 angustijolius Calet ex Graebn., Pot. in Engl., 1. c., 



101 = oehratus Raoul, ex Gr., 1. c. 

 angustijolius Cham. & Schl., De plantis etc, in Linnaea, 



1827, 210: rufescens Schr. — 142, 143. 

 angustijolius Custer in Dalla Torre & v. Sarnth., 



Fl. Gef. Grafsch. Tirol., 1906, 126: natans L. f. 

 angustijolius DC, Fl. fr. VI, 1815, 311: oppositifolius 



Lam. & DC, [3. 

 angustijolius Fieb., Pot." Bohm., 1838, 30: nitens Web. f. 

 angustijolius Fieb., 1. c., 32: crispus L. f. — 60, 61. 

 angustijolius Fieb., 1. c., 38: obtusifol. M. K. a. 

 angustijolius Fiscn., Beitr. etc. in Mitt. n. 32 bayer. 



Bot. Ges. 1904, 377: mueronatus Schr., var. — 95. 

 angustijolius Fiscn., Bayer. Pot. 1907, 97: compressus 



L., f. — 66. 

 angustijolius Fisch., 1. c, 97: acutijol. Link., f. — 71. 

 angustijolius Fisch., 1. c, 116: pusillus L., f. 

 angustijolius Fisch., Bern. zu den Pot. in 2 Aufl. Syn. etc. 



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

 angustijolius Fr., Nov. etc. 1828, 30: oblongus Viv., f. 



177, 178. 

 angustijolius Graebn., Pot. in Engler, 1. c, 97. — 251. 

 angustijolius Hornem. Fl. Dan., 1819, t. 1635; lucens 



L., var. (is = alpinus Balb.). 

 angustijolius Meyer, Chloris Han., 1836, 519: natans 



L.,var. (only described as »Schmalblättrigesschwim- 



raende Laichkraut»). 

 angustijolius Neilr., Fl. v. Niederösterr. 1859, 218: pu- 

 sillus L., var. 

 angustijolius J. S. Presl. — 210., 211, 215. 

 angustif. X heterophyllus (P. varians Mor. ex Fryer) 



Ar. Benn. in Linton, Hybrids etc. in Journ. of Bot. 



1907, 300. 



angnstij. X lucens (P. curvatus Ar. Benn., Notes etc. 



in Jonrn. of Bot. 1908, 249). 

 angustijolius Schult., Mänt. in vol. III Syst. etc. 1827, 



364: pectinatus L., var. 

 angustijolius Tatjsch ap. Fieb. 1. c, 17: rujesc. Son;, var. 

 angustijolius Tis. Pot. Svec. exs. I, 1894, n. 25. — 206. 

 angustijolius Waelr. Sched. crit. 1822, 66. — 262. 

 angustissimus Ar. Benn., Forms of Pot. in Jonrn. of. 



Bot., 1907, 174: zosterijolius Schiim. f. 

 angustissimus Hagstr. — 188, 189. 

 angustissimus Kunth. — 39. 



angustissimus Wallr., Sched. crit. etc, 1822, 68: pu- 

 sillus L. v. (3. 

 annulatus Bell. — 141. 

 antalens Hagstr. — 105, 106. 

 antillanus Kunth, En. pl. III, 1841, 128: natans L., f. 



(= nodosus Poir.; Linnaea, 1827, has an incorrect 



statement of this f. ). 

 apicalis Hagstr. — 156, 157. 

 apicatus Hagstr. — 78. 

 apiculatus Fieb., 1. c, 38: obtusif. M. K., f. 

 apiculatus Fisch., Bayer. Pot., 1907, 115: pusillus L., f. 

 argentinus Ar. Benn., Notes etc. in Jonrn. of Bot. 1908, 



250: pusillus L. subsp. 

 argutulus Hagstr. (gramineus X nodosus). — 220. 

 Arrhenii Fr. Summa Veg. Scand. 1, 1846, 68 et Herb. 



Norm. V, 74. — 177. 

 Aschersonii Ar. Benn. — 88, 108, 110—113. 

 asiatiens Ar. Benn., Notes on Pot. in L'Annuaire Cons. 



Geneve, 1905, 103—129. 

 attenuatus Hagstr. (Berteroanus X polygonus). -- 112, 



113, 114. 

 augustanus Balb. — 205. 

 aidacophyllus Schumann. — 26. 

 australiensis Ar. Benn., in Journ. of Bot., 1910, 149. 



— 169, 175. 



australis Kirk, ap. Ar. Benn., Bem. in Annal. nat. 



Hofm. 1892, 286: natans L., var. (= Cheesemaiiii 



Ar. Benn. ex Ar. Benn., 1. c). 

 emstralis Phil., Verzeichn. der von Fr. Phil. ges. Pfl. in 



Anal. Mus. Chil., 1891, app. 95. — 40. 

 austriacus Gandog. — ■ 58. 

 austrinus Hagstr. (The Journ. of Bot. 1908, 250 has 



austriacus, misprint. ). — 102, 103. 

 azoricus, Ar. Benn., Notes etc. in Journ. of Bot. 1904, 



71: lucens L., var. (is a dist. spec. ex Hagstr.). - 



198, 237. 

 Baagoei Ar. Benn. (alp. X crispus, see vennstus Bge!). 



— 144. 



Babingtonii Ar. Benn. (luc. X pral. ). — 222, 244, 246, 



247. 

 badioviridis Hagstr. — 151, 161. 

 badins Hagstr. — 104. 

 Baznitzii Gandog., Pug. pl. etc. in Österr. Bot. Zeitschr. 



1881, 19 (is likely to comprehend P. trich. as well as P. 



panormit. both of which are coll. by B^nitz in the 



locality recorded: Medenau at Konigsberg). — 74, 



77, 103. 

 bambergensis Fisch. (zost. X acutijol. ex Fisch.). — 66. 

 barensis Hagstr. — 164. 



K. Sv. Vet. Akad. Handl Band 55. N:o 5. 



34 



