KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 55. N:0 5- 49 



1869, 495. — According to the original description J. A. Schultes meant a plant 

 with rather broad and elongated leaves and conspicuously interrupted spikes (»Die 

 Blumen in entfernt stehenden Querlen»). Such forms f. pinguis Tis., 1. c. n. 128, 

 and f. zosteroides Fischer, I. c, 125, also seem to be. — F. incrustalus Tis., 1. c. n:o 

 128, I place here, though with some doubt. By its broader basal leaves it forms a 

 transition to the var. zosteraceus Fr. 



Distribution: Siveden, Uppland »sjön vid Kongshamn 1797» (hb. Uppsal.); 

 »Fyris juxta Upsaliam 1859, Zetterstedt» (hb. Uppsal.); Sudermania, Västerljung, 

 Tunsäter, 96, Torssander (hb. Stockholm., Uppsal., Lund., Gotenb.). — England, 

 »Hull, Yorkshire, 7 sept. 1853, From Charles C. Babington (Cambridge)» (hb. Upp- 

 sal.), by Babington himself labelled P. flabellatus. This is without doubt the true 

 P. flabellatus: of high growth, upper internodes 50 mm long, lower ones longer, 

 sheaths rather long, lower stem-leaves rather broad, upper ones narrower, branch- 

 leaves very narrow. Fruit large, of usual form, without prominent keel. — Stoke 

 Heath, Warwickshire 1855. T. Kirk (hb. Lund.). — Germany, Bavaria, Bamberg, 02, 

 Fischer (hb. Stockholm.). 



f. dichotomus Wallr., Sched. crit. 1822, 67. — P. Vaillantii Roem. & Schitlt. 

 Syst. veg. III, 1818, 514. — Distinguished from the preceding only by the shorter and 

 more dense spikes: spica pauciflora, Wallr. The peduncle also seems to be shorter 

 than in general. I have seen specimens from Denmark »Jordbroå, 97, J. Baagöe» 

 (hb. Stockholm.) and »Nibså, 99, J. Baagöe» (hb. Stockholm.). 



f. sublatifolius n. f. — Folia inferiora latiora (circa 2 mm); vaginae ut in var. 

 zosteracea. 



This form resembles var. zosteraceus in everything except the upper leaves which 

 are narrower: thus more like the usual form as to the upper part of the stem; as 

 to the basis, again, just like v. zosteraceus. The same is the case with the following, 

 f. notabilis, besides being microcarp. 



Distribution: Sweden, Medelpad, Tynderö, 06, (hb. Uppsal., Lund.); Uppland, 

 Rådmansö, 87, Hallsten (hb. Uppsal.), Edbovik, 37, Silfverstolpe (hb. Stock- 

 holm.), »sundet mellan Ingarö och Värmdö, 51, V. B.» (hb. Uppsal.); Stockholm, 

 Laduviken, 47, Nyman (hb. Stockholm.); Sudermania, Gålön, 50, Björnström (hb. 

 Stockholm., Uppsal.), Österhaninge, 87, Almqvist (hb. Stockholm.), passing över 

 into pure v. zosteraceus; Utön 96, Tiselius (hb. Gotenb.) among true v. zost., see 

 below! Ostrogothia, Kvarsebo, Sätersholmen, 84, Strömfelt (hb. Stockholm.), St. 

 Annse, Aspöja, 84, Elmqvist (hb. Stockholm.); Smoland, Tryserum, 81, Elmqvist 

 (hb. Lund.). 



Norway, Kristiania, hb. E. Fries, Blytt n. 72. (hb. Uppsal.). 



f. notabilis Tisel., Potamog. suec. exsicc. III, 1897 n. 133: — Fruetus minores, 

 ceterum ut f. sublatifolius. 



Being microcarp this form corresponds to f. coronatus of var. ungulatas. I can 

 record it only from the original locality: Sweden, Uppland, Bay of Norrtelje, 82, 

 Tiselius (hb. Stockholm., Uppsal., Lund. and Gotenb.). 



f. ulvonsis n. f. — Folia brevia, 30 — 40 mm longa. 



K. Sv. Vet. Akad. Handl. Band 55. N:o 5. 7 



