352 Harper : Native weeds and their probable origin 



have observed in southern New England (mostly in Southbridge, 

 Mass., and neighboring towns) and the 



western half of Long 



Island. Those to which interrogation points are prefixed may 

 possibly belong to some of the eight other classes mentioned above, 

 but they are mentioned to attract attention and invite discussion, 

 by which their status may perhaps be settled. 



? Krigia virginica (L.) Willd. 



Oenothera biennis L. (and others). 



Lactuca canadensis L. (and perhaps Isnardia palustris L. 



others). 

 Achillea Millefolium L. 



Viola (many species, especially the acau 

 lescent blue-flowered ones). 



mutilum L. 



Bidens frondosa L. (and perhaps others). Hypericum maculatum Walt. 

 Gnaphalium obtusifolium L. 

 A naP kalis margaritacea (L.) B. & H. 

 Erigeron ramosus (Walt.) B. S. P. 

 Leptilon canadense (L. ) Britton. 

 Aster Novae- Angliae L. * 



vimineus Lam. 



a 



• ■ 



Sarothra gentianoides L. 

 ? Celasttus scandens L. 

 ? Rhus typhina L. 



Euphorbia macula ta L. 

 " Preslii Guss. 



diffusus Ait. (and several others). Acalypha virginica L. 



E ut ha mi a graminifolia (L. ) Nutt. 

 " caroliniana (L. ) Greene 



(and intermediate forms). 

 Solid a go canadensis L. 



* < 



n em oralis Ait. 



(and some others). 

 Xanthium spp. 

 Ambrosia trifida L. 



<( 



artemisiaefolia L. 



Lobelia infla ta L. 

 Specularia perfoliata (L.) A. DC. 

 Sambiaus canadensis L.f 

 //oust on ia coerulea L. 

 ? Plan ta go major L. 





Rugelii Decne. 



Linaria canadensis (L. ) Dumont. 



Ilysanthes gratioloides (L.) Benth. 



Mentha canadensis L. 

 ? Koellia virginiana (L.) Britton. 



Prunella vulgaris L. 



Verbena urticaefolia L. 



Convolvulus Sepium L. 



Asclepias syriaca L. 

 ? Corn us candidissima Marsh. 

 ? Ptilimnium capillaceum (Michx.) Raf. 



Kneiffia pumila ( L. ) Spach . 



11 gracilens Gray. 

 ? Polygala verticillata L. 



Ottz/w (the yellow-flowered ones). 

 ? Lespedeza (several species). 



Cassia marylandica L. 



Chamaecrista spp. 



Crataegus (many species). 



Agrimonia spp. 



Potentilla simplex Michx. (and others). 

 ? Fragaria virginiana Duchesne. 



amerh**a (Porter) Britton. 



j?«£«j spp. (numerous blackberries). 



Lepidium virginicum L. 



Car damme hirsuta L. 



Ranunculus abortivus L. 

 ? Anemone cylindrica Gray. 



Silene antirrhina L. 

 ? Polygonum aviculare L. 



? 



<< 



? 

 ? 



<< 



<c 



t< 



u 



it 



erectum L. 

 pennsylvanicutn L. 



Hydropiper L. 

 sagit latum L. 

 scandens L. 



? Rumex Acetosella L. 



Urtica gracilis Ait. 

 ? S*//> </Wor Muhl. (and others). 



21 : 



* See Torreya 7 : 173. 1907. 



fSee Gray, Am. Nat. 1: 493-44. 1867; 2: 38-39. 1 



473- '904; Harper, Ann. N. Y. Acad. Sci. 17: 154. I9° 6 - 



86S; Allison 



Auk 



