162 THE MAERICAN MIDLAND NATURALIST 
Potamogeton perfoliatus Linn, Am. Acad: II., p. 241, (1749), 
Spo bk tp. 226; (1752). 
Leeds. 
30. Spirillus perfoliatus var. Richardsonii (A. Bennett) 
Nwd. Am. Midl. Nat. 1, c. p. 17 (1913). 
Potamogeton perfoliatus v. Richardsoni A. Bennett. 
Leeds. Kulm (Brenckle). 
31. Spirillus Zosteraefolius (Shum) Nwd. Am. Midl. Nat. 
he. op. Pye sIGi 2): ‘ 
Potamogenot zosteraefolius Shum. Enum. Pl. Saell. p. 50, (1801) 
Lake Ibsen (extinct). 
BUCCAFERREA Micheli. Nov. Pl. Gen. 72 (1729). 
32. Buccaferrea maritima (Linn.) Lunell. 
Ruppia maritima Linn. Sp. Pl. p. 127 (1753). 
In Devils Lake. This was supposed to be the only vascular 
plant existing in said lake, but the writer found in 1913 Spzrillus 
pectiniformis growing in company with the buccaferreae. 
ALGOLDES* Vaile, Avon th, mw epe) 
Aponogeton Pontedera, Anthologia II., 117 (1720). 
Zannichellia Micheli. Nov. Pl. Gen. 71, (1729). 
33. Algoides palustre (Linn.) Lunell. 
Zannichellia palustris Linn. Sp. Pl. p. 127. (1753). 
Butte, York, Devils Lake. 
Family 10. JUNCAGINEAE Rich. also Kunth, Endlicher, 
(1840). 
TRIGLOCHINC: Bauhin Pinax. p.6y (ees) 
34. Triglochin tricapsularis Linn. Am. Acad. p. 245, (1894). 
Triglochin palustris Linn. Sp. Pl. p. 338, (1753). 
Butte, Towner. 
HEXAGLOCHIN (Dum.) Nwd. Nov. Gen. Am. Mid. Nat. 
Vol TiL.; (posto, (L913): 
35. Hexaglochin sexlocularis (Linn.) Nwd. Am. Midl. Nat. lc. 
Triglochin maritima Linn. Sp. Pl. p. 339, (1753). 
Leeds, Thorne, Towner. 
Family 11. ALISMACEAE D. C. Fl. Fr. 3, p. 181, (1805). 
ALISMA (Plinius), Nat. Hist. 1. 25, c 10 et 77, Valerius 
Cordus (1561). 
36. Alisma Geyeri lanceolatum (Buchenau) Lunell, Bull. 
Leeds Herb. 2: p. 5, (1908). 
