Fig. 412: Polygonum punctatum: a and b, achene. lenticular type (cross section), 

 X 5; c and d. achene, trigonous type (cross section), x 5; e, stipular leaf sheath, 

 glandular-dotted and bristly-ciliate, x 2; f, pistil, x 6; g, perianth, spread open, showing 

 the small glands of the disk and stamen insertion on two levels, x 6; h, habit, showing 

 the nearly fiat acuminate leaves and the somewhat interrupted spikes, x %; i, upper 

 part of spike, showing the gland-dotted perianth and the funnelform sheathing bracts, 

 x 4. (From Mason, Fig. 200). 



