682 



Plants of ih6 Punjab, 



WATEE PLANTS. • 

 HfiBBS WITH Alternate Stipulate Simple Leaves. 



Petals none. 



Potamogeton 

 perfoliatus, 



Naiadace-s;. 



F. B. I. vi. 566. 



Himalaya, 



4-8,000 ft. 



(CoUett). 



Baluchistan. 



(Stocks). 



like the last species, but all leaves submerged, stem 

 stout, dividing into two, leaves 1-4 in., ovate, heart-shaped, 

 stem clasping, margins even, upper leaves opposite, stipules 

 small, soon falling off. flower spikes crowded, sepals long- 

 stalked, drupelets y^^ in., hardly ribbed, flattened, beak 

 short, straight. 



Potamogeton 

 crispus; 



Naiadace^. 

 F. B. L vi. 566. 

 The Plains to 

 1,000 ft. 



Kashmir (Collett). 

 Khanki. 



hke the last species, but stem slender, flattened, leaves 

 1-3 in., narrowed at the base, linear or upper opposite and 

 half stem-clasping, tip rounded, margins very wavy, 

 finely toothed, flower spikes few-fiowered, very short, 

 flowers ver}^ small, drupelets larger, J in,, ovoid, flattened, 

 long-beaked, ribs entire or toothed. 



Potamogeton iucens 



Naiadace^. 

 F. B. L vi. 567. 

 Kashmir, 

 6-6,000 ft. 

 (Collett). 



like the last species, but stem stout, leaves large, 

 4-10 in., nearly sessile, lanceolate, very sHghtly wavy° 

 upper leaves sometimes floating, stipules large, long, 2- 

 winged or keeled, flower spike stout, drupelets jV i^-' 

 Btout, convex on both sides, shortly bluntly beaked. • 



Potamogeton 

 pectinatus, 



NAIADACEiB. 



F. B. L vi. 567. 

 The Plains to 

 12,000 ft. 

 (Collett). 

 Khanki. 



stem thread-hke, densely branched on opposite sides, 

 leaves 3-8 in, by -j'^-J in., very narrow, grass-Hke, base 

 sheathing, margins slightly thickened, stipules like small 

 lobes on the edge of the lobe sheath, flowers at intervals 

 along the spike, drupelets ^ in., large, stout, smooth, hardly 

 beaked ; for other characters see the first described species 

 of this genus. 



Potamogeton 

 pusillus, 



NAIADACEiE. 



F. B. I. vi. 567. 

 Ka'^miri 5,000 ft^ 



like the last species, but leaves |-3 in., narrowly linear 

 or thread-Hke, stipules small, not united to the sheath, 

 flowers few, mmu<e, clustered, drupelets stoutly beaked, 

 bluntly ribbed. 



