REVISION OF THE GENUS NAJAS. 395 



Var. ANGUSTIFOLIA, A. Br. in Journ. Bot. ii. (1864.) 275. (PL XXXIX. figs. 13, 28.) 

 Laxa, internodiis saepius inermibus, foliis loagis anguste linearibus, deiitibus brevibus 

 dissitis, fructu minore. 

 Stem almost or quite imarmed. Leaves 2 to 4 cm. long, with 5 to 10 short outwardly- 

 directed teeth on each side, unarmed or with a few spines on the back ; sheath with 1, l^ 

 or 3 small, rarely large, teeth on the shoulders. Fru'ii oblong, narrowed towards the 

 subobtuse apex, 4 to 4'5 mm. long, 1*5 to 2 mm. broad. 



Europe (Northern) — Brackish w^ater around the Baltic. Christiansand {Rornemami^ 

 Engelhardt, Nordstedt) ; Warnemiinde (North Germany) {Link) ; Slesvig-Holstein, 

 *' in Brackwasser haltigen Binnenseen " [Hansen, no. 948), (Lessen) ; Ostrobothnia, 

 Austr. Quarken {Siming) ; Finland, "In maritimis paroecia^ Perno " {Seel an); 

 Mecklenburg, Dassower-See. 

 Assyria — " Missul ad Ninivam " {BommiUler, no. 1838). 

 Turkestan — A fragment in Herb. Kew. 

 India — Jemadar ki Lundi, Kurrachee (Stocks, no. 464). 

 Bourbon — ( Commerson). 

 Sandwich Is. — (Menzies) ; '* In arenis prope Hama-Rurii 0-Wahu" (Adoltz). 



Var. INTERMEDIA, A. Br. in Journ. Bot. ii. (1864) 276. (PI. XXXIX. figs. 14, 29.) 



N. marina, Linn., var. genuina, K. Schum, in. Mart. Fl. Bras. iii. pt. 3, 724 (1894), in part. 

 N. intermedia, Gorski in Eicliw. Naturhist. Skizze von Lithauen, &c. 126 (1830). 

 N. maritima. Pall. Reise, i. 369, may belong here (1791). 



Plaiita foliis parvis, anguste linearibus, cum dentibus conspicuis lamina) latitudinem 



saepius excedentibus ; vaginis utrinque dentibus singulis vel binis instructis ; fructu 



quam in specie stepius minore. 



Internodes unarmed or, especially the upper, sparsely spinous. Leaves 1'2 to 2 cm., 



generally about 1*5 cm. long, with 4 to 7 teeth on each margin ; sheaths with generally 



1 or 2, rarely more, teeth on each side. Fruit usually 3 to 4 mm., sometimes 5 mm. 



long, 1'5 to 2'5 mm. broad. 



Baltic — Stockholm {Nyman.Wlkstrdm, Hornemann, Andei^sson); Aland (iZ<?rZ^. Linn.]; 

 Bleking (i^ri^^ and others); Westervik (Torne?'); Gefle Bay (Ahlbery); Skaren 

 Is., Christiania fiord (Leche); Wolgast (Marsson). 

 GuLE OF HiGA — Oesel Is. ( Werner, no. 739 b ; Arensburg). 

 Gulf of Einland — Mouth of Narora river (Herb. Fl. Ingricae) ; Fagervik (Hisingcr) ; 



Karawaldoi Is. (Schmalhausen). 

 Germany — Schlon-See, Eofen-See and Schlachten-See, (A. Brann) ; Salzigen-See 

 (Garcke) ; lakes near Allenstein and Gilgenburg (E, Prussia) (Caspary), and near 

 Zutzer (W. Prussia). 

 Switzerland — PLcichenau near Constance (Leiner) ; Bobcnhausen, Zurich (Muret). 

 Russia — Ukraine, S.W. Russia. 



Asia. — East shore of Caspian Sea ; Afghanistan (Griffith, no. 5609). 

 Fruits found in neolithic deposits in Scandinavia by Gunnar Andersson and figured 

 (Svensk. Vilxtvarld. Hist. 42, t. 34. fig. d) may belong here. 



SECOND SERIES. — BOTANY, VOL. V. '^ P 



