NOTES ON THE GENUS NAJAS. 439 



in length; sheaths 3 mm. long, with few (2 to 3) or no small shallow teeth on the 

 broadly rounded shoulders. Flowers not seen. Fruit rare, 4 mm. long by Vi\ mm. 

 broad. 



Eesembles the luxuriant form of the type, but differs in the smaller marginal leaf- 

 teeth and smaller fruit. 



Malay Archipelago— Bali Island, *' In laculo (Danu) Bator, 3230'." Sept. 8, 1857. 

 [Zollinger, no. 3891, in Herb. Mus. Palat. Vindob.) 



It also approaches the Socotran specimen of the var. Ehrenhergii, but has longer, 

 narrower, and more acute leaves ; the fruit is also larger than observed in that variety. 



Var. ANGUSTiFOLiA, A. Br. in Journ. Bot. ii. 1861, 275 ; Eendle in Trans. Linn. Soc. 

 ser. 2, Bot. v. 394 (1899). 

 The following specimens indicate a wider distribution than previously given : — 

 Caspian Sea — (Herb. Bunge in Herb. Cosson). 

 West Australia — Murchison Hirer {Oldfield). 



Var. INTERMEDIA, A. Br. in Journ. Bot. ii. 1861, 276 ; Eendle in Trans. Linn. Soc 

 ser. 2, Bot. v. 395 (1899). 

 Besides specimens from, additional localities in the Baltic area and North Germany, I 

 have seen the following, by which the range of the variety is somewhat extended : — 

 South Austria — Klagenfurt " Am Schiffahrtscanal von Worther-See " [Mellmg in 



Herb. Magnus). 

 EussiA— Lithuania {GorsU in Herb. Mus. Palat. Vindob., the type of K intermedia^ 



Gorski). 

 Sicily — {Ross in Herb. Magnus). 



India— Khandura District, Central Provinces {Bathio, no. 8549 in part). 

 I saw^ a fine form with lower internodes 10 cm. long by 175 mm. broad, and leaves 

 reachinoj 3 cm. in leno-th bv 1 mm. broad (fruit barely 4 mm. long), from Sudermannia 

 {Ehstrom in Herb. Hort. Bot. Zurich). 



Var. BRACHYCARPA, Trautv. in Bull. Soc. Imp. Mosc. xl. no. iii. (1867) 97. 

 Planta caulibus inermibus, foliis brevibus, linearibus, obtusis, marginibus denticulatis, 

 vaginis latis ; fructu minore, ellipsoideo. 



Branches rigidulous, laxly leaved, ascending, lower internodes 3 to 4 cm. long, 

 becoming gradually shorter above, 1 mm. or less in width. Lower leaves 12 to 16 mm. 

 long, including the large sheath, by 1 to 1*25 mm. broad, bearing 5 to 8 shallowly patent 

 marginal teeth, which are about one-fourth the leaf-width in length ; the leaves become 

 shorter as we ascend the stem, the upper ones being barely 5 mm. long, including the 

 sheath (2 mm.), and less than 1 mm. broad, with only 3 marginal teeth ; sheaths with 

 1 or 2 shallow teeth on the broad shoulder, often broader than long; in the lower leaves 

 about 3 mm. long by 3-5 to 4 mm. broad. Fruil broadly ellipsoidal, obtuse, 2-5 mm. 

 long by 1-75 mm. broad ; seed dark brown. 



Approaches var. intermedia, A. Br., especially in habit, but is distinguished by the 

 broader less prominently toothed leaves and the smaller broader fruit. 



Central Asia— Lake Alakul, Songaria {Schrenk). 



3x2 



