278 



J. O. HAQSTEOM, CRITICAL RESEARCHES ON THE POTAMOQETONS. 



scoticus Hagstk. — 62. 



Seemenii Ascii. & Gk., Synopsis etc., 1897, 335: poly- 

 gonij. X graminevs. — 207, 231, 232. 



selenocarpiis FisCH., 1. c, 1907, 97: compressus L., f. — 66. 



semlcoloratns Ar. Benn. — 175, 181. 



semifructus Ar. Bekn. — 96. 



semipellncidus Koch. — 141. 



semipuctiis Ar. Benn., see semijrucius Ar. Benn. 



septentrionalis Tis., 1. c, I, 1894, u. 30 — 32: gramin. L., 

 V. — 11, 206, 207, 208, 209, 227, 230, 23iB. 



serotinus Schrad., ap. Koch, Synopsis, 1844, 775 ( = 

 nutans L., v. prolixus Koch, ex Koch, 1. c. ). — 191. 



serratus Hagstr. — 62. 



serratus L., Sp. pi., 1753, 126 ( Dsimply a curious form of 

 P. (yrispus L. »: Ar. Benn. in Journ. of Bot. 1889, 

 243. — This name is differently conceived: Scopoli, 

 Fl. cam. I, 1772, 117 = prcelongus Wulf. ; Hudson, 

 Fl. angl. I, 1778, 75 = crispus L.; Web., Prim. fl. 

 hols., 1780, 16 = lucens L.; Roth, Beitrage 11,1783, 

 126: alpinws Bale.; Noi^te in Hansen Herb. n. 

 1114 = Zizii M. K.; M. & K., in Rohling, 1823, 

 860 = densus L. v. lancifolius M. K. — The English 

 view, supported by Linne's herbarium and also 

 embraced by the Dutchman L. Vutck, Revisie etc., 

 1895, is no doubt correct. — 58. 



serrulatus Fisch., Bem. etc. in Mitt. Bayer. Bot. Ges., 

 1914, 107: gramineus L., f. Dsubmerse Blatter drei- 

 nervige, hellgriin und deutlioher gezahnelti). May 

 be reckoned to the plantse dubife. 



serrulatus Hagstr. — 62. 



serrulatus Reg. & Maack. — 56, 57. 



serrulatus Schkadee, ex. Op., in Flora V, 1822, 267 ( = 

 crispus L. var. serrulatus Schr. ex Reichb., Icones 

 etc., VIII, 1845, 18, t. XXX, f. 52). — 58, 60. 



sessilifollns Hagstr. — 167. 



sessilis Hagstr. — 201. 



setaceus Gilibekt, ex Schult., Mantissa etc., 1827, 355 

 (= divaricatus Wolfg., ex Schult., 1. c). 



setaceus L., — 260. 



setaceus Meyer, Chloris han., 1836, 527: pectinatus L. var. 



setaceus Mazziari, Fl. corcirese etc., I, 1834 — 35, 956 

 (pi. dubia). 



setaceus PuRSH, Fl. Am. sept. I, 1814, 120 (= hybridus 

 Mchx, ex Tuck., Am. Journ. 1848, 230. = dimor- 

 phus Raf. ex Raf. in Am. month, mag. etc., 1817, 

 358). 



setaceus Schumacher, Enum. pi. SseU., 1801 — 03, n. 

 170 (= fiUformis Pers. ex Nolte). — 14. 



siblricns Ar. Benn.,' Nomenclat. etc., in Journ. of Bot., 

 1890, 300. — 83, 85. 



sicid'us TiNEO. — 179. 



similis Ar. Benn., in Journ. of Bot., 1902, 146. — 165, 175. 



simplex Fieb., 1. c, 1838, 40: BercMoldi Pieb. f. — 124. 



simplex Tis., Pot. suec. exs., Ill, 1897, n. 145. — 254. 



simplicissimus Tis. — 93. 



sinuatus Fries, 1. c., 1828, 43: crispus L., v. — 60. 



sinuensis Tis., 1. c, I, 1894, n. 21: gramin. L., f. 



sparganifolins L^ST. — 192, 217 — 220, 239, 240, 254. 



spathaceus FisCH., Bayer. Pot. etc. 1907, 116: pusillus 

 L. f. — 124. 



spatJueformis Tuck., ex Robb., in Asa Gray, Man. etc. 



1867, 487 (is considered to be a misprint for: spa- 



thulceformis: Journ. of Bot. 1900, 129). — 209. 

 spatkulceformis Robbins, 1. c. : gramin. L. v? — 210, 230. 

 spathulatus Marsson, Fl. Neu-Vorpomm. etc., 1869, 



490: alpinus Balb. var. (= rivularis Hartm.) 

 spathulatus Schrad. — 148, 220. 



spathuUfolins Fisch., I. c, 1907, 43: gessnacensis Fiscii., f. 

 spathulifolius FiSCH., 1. c, 45: alpinus Bai.b., f. 

 spathuUfolius Fisch., 1. c, 54: fluit. Rth., f. — 188. 

 speciosws Tis. — 226. 

 sphcerocarpus Schumann in Fl. brasil.. Ill, 3, 1894, 



692: pusill. L. V. — 111. 

 sphagnophilus Neum., in Bot. Not., 1896, 91: polygonif. 



POURE. V. — 177. 

 spicatns Engelm.\nn ex Robb. in Asa Gray, Man. etc. 



1867, 486: dioersif alius Bart. var. (Robb. follows 



Tuck., ace. to whom P. div. Barton = hybridus 



Michx, i. e. P. capUlaceus PoiR. ). — 139. 

 spicosus Hagstr. {franconicus Fisch. ser. ). — 126. 

 spicosus Hagstr. {nitens Web. f. ). — 227, 230. 

 8plrilliformis Hagstr. — 135, 137, 138, 262. 

 spirillus Tuck. — 136. 

 sjnssus Tis. — 48. 

 splendens Fisch., Bem. in Mitt, bayer. Bot. Ges., 1914, 



106: Zizii M. K., f. 

 splendidissimus Schultz Herb. Norm. 1890, n. 2693: 



Zizii M. K., var. 

 splendidissimus Tis., 1. c, II, 1895, n. 65: lucens L. var. 



— 214. 

 spoliatns Hagstr. — 162, 168. 

 squarrosus AscH. & Gr., Synopsis, 1897, 345: pusillus 



L. var. — 124. 

 squarrosus Fiscii. — 102. 

 stagnalis Fisch., 1. c, 68: Zizii M. & K., var. 

 stagnalis Fr., 1. c, 1828, 37: gram. L., f. — 206. 

 stagnalis Neum., Nagra krit. ell. sails, vaxter etc. 1888, 



25: marinus L., f. 

 stagnatilis Kocii, Synopsis etc., 1844, 776: jluit. Rth, v. 

 stagninus Schlecht., PI. bcrolin. I, 1823, 118: pectin. 



L., var. 

 stagrnornm Hagstr. — 159, 160. 

 stenobasis Hagstr. — 224, 228, 230. 

 stenocarpus Fisch. — 102. 

 stenophyllus Meyer, Chlor. lian. 1836, 520: gramineus 



L. V. 

 stenostachys Schum. in Fl. brasil.. Ill, 2, 1894, 687, t. 



119. — 152, 161, 162, 168. 

 sterilis Hagstr., {lucens X natans). — 238 — 241. 

 stipularis RouY, Fl. Fr., T. XIII, 315: prail. AVulf., v. C- 

 stipidatus Arcangeli, Comp. Fl. It., 1882, 643: densus 



L., V. ~ 261. 

 striatus Ruiz & Pav. — 39 — 40, 42, 44, 51,' 53. 

 strictifolius Ar. Benn. — 92. 

 strictior Hagstr. — 74. 

 strictns Phil. — 16, 26. 

 SturrocUi Ar. Benn. — 117, 118, 124. 

 stylatns Hagstr. — 141, 143, 151. 

 subcequabilis Hagste. — 46. 

 subcompletus Hagstr. — 127. 



