Ill) p. 65, no. 1094; Graebn. Potamogetonaceae in Engl. Pflanzenr. H. 31 (IV, 11, 1907) 

 p. 113; KptM. ^jE. Ajit. VI (1912) p. 1276. 



subspec. tenuissimus Mert. et Koch, Deutschl. Fl. I (1823) p. 857; Graebn. 1. c. p. 

 116; KpbM. 1. c. p. 1277. 



In a small lake on an islet in the Yenisei, near Ust Abakansk, and at Ust Tara-kem. 



Distribution: Europe, temperate portions of Asia, northern Mongolia, Africa, the 

 Canaries, Madeira, North and South America, Greenland. 



Potamogeton pectinatus L. Spec. PI. ed. II (1762) p. 183; Ledeb. Fl. Ross. IV, p. 30; 

 Turczan. Fl. Baical.-Dahur. (1854, III) p. 66, no. 1095; Graebn. Poiamogelonaceae in 

 Engl. Pflanzenr. H. 31 (IV, 11, 1907), p. 121; KpBur. <Dji. A.it. VI (1912) p. 1277. Pota- 

 mogeton Vaillantii Roem. et. Schult., Ledeb. Fl. Alt. I, p. 159. Potamogeton vaginatus 

 Turczan. Cat. Baical. no. 1092. 



In a still creek of the river Abakan, near Askys. 



Distribution: Europe, temperate and southern Asia, North and South America, 

 Africa, Australia. 



Zannichellia pedicellata (Wahlenb.) Fries, Novit. Mant. Ill, p. 133; Ledeb. Fl. Ross. 

 IV, p. 22. 



subspec. pedunculata Aschers. et. Graebn. Synops. Mitteleurop. Fl. I (1913) p. 559; 

 /. gracilis Hagstrem, in Baagoe in Videnskab. Medd. Nat. Foren. Kjobenhavn (1903) p. 

 183; Graebn. Potamogetonaceae in Engl. Pflanzenr. H. 31 (IV, 11, 1907) p. 156. 

 Zannichellia paliistris L. Spec. PI. ed. II (1763) p. 1375; Ledeb. Fl. Alt. IV, p. 197; Kpi.i.i. ^x. 

 Ajit. VI (1912) p. 1206. 



This species in commonly to be found floating on salt and brackish water in the 

 swamps at Ust Kamuishto, where I have gathered it flowering and with ripe fruits in 

 the second half of June. The ripe fruits are about 2 mm. long, on peduncles about 1 

 mm. long. The dorsal carina is slightly toothed, the ventral one smooth. The style is of 

 about the same length as the fruit, generally quite straight, or slightly curved near the 

 summit. 



Distribution: The species is distributed nearly all over the globe, only wanting in 

 Australia. 



Juiicaginaceae (LiNDLEV) ASOHEES. 



Triglochin maritima L. Spec. PI. ed. II (1762) p. 483; Ledeb. Fl. Alt. II, p. 62; 

 Turczan. Cat. Baical. no. 1083; Karel. et Kiril. Enum. PI. Fl. Alt. jio. 830; Ledeb. Fl. 

 Ross. IV, p. 35; Turczan. Fl. Baical.-Dahur. (1854, III) p. 34, no. 1079; Buchenau, Sclieiich- 

 zenaceaeinEngk Pflanzenr. H. 16 (IV. 14, 1903) p. 8; KpM.i. $jr. A.it. VI (1912) p. 1280. 



Very common on saliferous soil at Ust Kamuishto, where vigorous specimens, 

 to 60 cm. high, have been gathered by me. Collected with flowers and fruits in 

 the second half of June, at Tagarski osero with ripe fruits at the beginning of July. 



115 



