Plants of the Punjab. 



547 



Prostrate Herbs with Alternate Stipulate Simple Leaves. 



Petals none. 



Polygonum 

 cognatum, 



Polygonace^. 

 F. B. I. V. 25. 

 Himalaya, 

 11-14,500 ft. 

 Kashmir. 



like the last species, but stems short, little branched, 

 calyx very thick, lobes round with white margins, nut -^ 

 in., ovate, flattened. 



Polygonum 

 aviculare, 

 Knot grass, 



Machoti, kesra, 



handuke. 



Polygonace^. 



F. B. I. V. 26, 



Himalaya, 



6-10,005 ft. 



Simla (Collett). 



Kashmir, 



Baluchistan 



(Boissier). 



medium size, annual, smooth, stem and branches pros- 

 trate, 12-24 in., leafj^ finally grooved, leaves |-1 in., nar- 

 rowh'- lanceolate, almost sessile, sometimes g^andular- 

 dotted, stipules long, tubular, nerves several, strong, 

 straight, flowers small, green with white or red tips, in 

 axillary clusters, nut minutely wi'inkled ; for other charac- 

 ters see the last species. This plant is appHed externally 

 as an anodyne, the seeds are emetic and cathartic. 



Polygonum 

 tubulosum, 



Polygonace^. 

 F. B. L V. 27. 

 Himalaya, 

 6-7,000 ft. 

 Lahul. 



like the last species, but branches angular not grooved, 

 leaves linear, margins recurved, flowers sessile, calyx with 

 short teeth, not distinctly 3-sided, smooth, shining. 



Polygonum 

 plebejum, 



Polygonace^. 



F. B. I. V. 27. 



The Plains to 



5,000 f . 



Valleys below Simla 



(Collett). 



Kashmir. 



Indus Valley. 



like Polygonum aviculare, but entirely prostrate, 

 stipules few, nerved or nerveless, not rhombic, smooth, 

 not wrinkled. A very variable plant. 



nn2 



