50 



AMARANTACE^. 



AMARANTUS, Tourn. 



A. retroflexus, L. PIGWEED. 

 A. albus, L. 

 A. pumilus, Raf. 



On the beach. S. T. Olney, 1849. 



POLYGONACE/E. 



POLYGONUM, L. 



P. incarnatum, Ell. 



P. Persicaria, L. HEAIITEASE (an old Nantucket name). 



P. Hydropiper, L. SMARTWEED. 



P. acre, H. B. K. WATER SMARTWEED. 



P. hydropiperoides, Michx. MILD WATER-PEPPER. 



P. amphibmm, L. 



P. articulatum, L. JOINT-WEED. 



Brant Pt., &c. In the interior of the island in patches of 



sand where beach-grass has established itself. 

 P. aviculare, L. KNOTGRASS. 

 P. erectum, L. (P. aviculare, L., var. erectum, Roth.) 



Wharves, occasional ; L. L. D. 

 P. maritimum, L. COAST KNOTGRASS. 

 P. ramosissimum, Michx. 



L. L. D. 



P. sagittatum, L. SCRATCH-GRASS. 

 P. Convolvulus, L. BLACK BINDWEED. 

 P. dumetorum, L. CLIMBING BUCKWHEAT. 



FAGOPYRUM, Tourn. 



P. esculentum, Moench. BUCKWHEAT. 

 Common in old fields. 



RUMEX, L. DOCK. 



R. orbiculatus, Gray. 



R. salicifolius, Weinm. 



R. verticillatus, L. SWAMP DOCK. 



