58 The Vegetation of the 



Euphorbiaceae. In N. Am. 17 Gen. Ifi4 Spec. 



Euphorbia maculata L. roadsides, waste places, fields X. 10 Atl. — Cal. G. — 



Can. 

 Euphorbia hypericifolia L. (Preslii Guss.) bottom fields VIII. 8 Atl.— 



ISr.Mex. G.— Can. 

 Euphorbia dentata Michx. bottom III. 4 Ta. — Up.Miss. La. — Sonora. 

 Euphorbia heterophylla L. banks, hillsides IV. 5 Up.Miss.— Mex. 

 Euphorbia corollata L. prairies, hillsides VII. 7 N.Y.- Up.Mo. Fla.— Mex. 

 Euphorbia commutata Engelm. sandy banks I. 3 Va. — Fla.— Up.Miss. 

 lEuphorbia obtusata Ph. woods I. -3 Vt. — S.Ca.— R.Mts. 

 Acalypha virginica L. bottom, woods VII. 8 Atl.— N.Mex. G. — Can. 

 Croton glandulosus* L. sandy soil I. 3 Va. — Up.Miss. La. — W.Tex. 



Urticacese. In N. Am. 13 Gen. 24 Spec. 



Ulmus fulva Michx. woods, bottom V. 3 Can.— N.Fla.- Tex.— Up.Mo. 

 Ulmus amencana L. woods, bottom VIII. 8 N.F.— Fla.— R.Mts.— 52° NX. 

 Celtis occidentalis L. woods, bottom III. .5 Can. — Up.Mo. Fla.— Tex. 

 Morus rubra L. woods VI. 4 N.E.— Up Mo. Fla.— Tex. 

 Urtica gracilis Ait. bottom V. 4 N.E.— All.— N.Mex.— Cal. Or. 

 Laportea canadensis Gaud, bottom V. 6 Atl. — Up.Mo. G. — Can. 

 Filea pumila Gr. shady woods V. 6 Atl.— Up.Mo. G. — Can. 

 Bohmeria cylindrica Willd. bottom III. 4 Atl.— W.Tex. G.— Can, 

 Parietaria pennsylvanica Muhl. shady woods 111.^8 N.E.— All.— jSI.Mex.— 



Up.Mo. 

 Humulus lupulus L. copses, bottom III, 4 N.E. — All. — N.Mex. R.Mts. — 



Sask. 



PlatanacesB. In N. Am. 1 Gen. 3 Spec. 



Platanus occidentalis L. woods, bottom VI. 5 N.E, — Up.Miss. Fla. — Tex, 



Juglandaceae, In N. Am. 2 Gen. 12 Spec, 



Juglans cinerea L, woods V, 4 N.Br.— Up-Miss. All. (Ga,)— Ark. 



Juglans nigra L. woods V. 5 N.E.— Up.Miss, Fla.— Tex, 



Carya olivae formis Xutt. woods, bottom III. 3 Up.Miss. W.Ky.— La.— Tex. 



Carya alba Nutt. woods VIII. 8 Can.— Up.Miss. W.Fla.— Tex. 



Carya tomentosa Nutt. woods VI. 5 Can.— Up.Miss. Fla. — Tex- 



Carya sulcata Nutt, woods, bottom I, 3 Pa,— Up.Miss. — Ark, 



Carya porcina** Nutt, woods I, 2 N,E, — Up,Miss. Fla. — Tex. 



Carya amara Nutt, woods VI. 6 N.E, — Up,Miss, Fla,— Tex, 



Oupuliferse In N, Am, 7 Gen, 46 Spec, 



Quercus alba L, woods X, 8 N.E.— Up.Miss. Fla.— Tex, G.— 46° N,L, 

 Quercus macrocarpa Michx. woods, bottom V. 5 N.Br.— Up.Mo. N.Ca, — 



W,Tex. 

 Quercus bicolor Willd. woods, bottom II, 5 N,E,— All, (Ga,)— Ark, Up,Miss, 

 Quercus prinoides Willd. (Qu.prinus acuminata Michx,) woods IV.|4 N.E. — 



Up.Miss, All.— W.Tex, 

 Quercus imbricaria Michx, woods IV, 4 Ta,— Up,Miss,— All. — (Ga.) 

 Quercus nigra L. woods I. 2 N.Y.— Up.Miss, Fla,— W,Tex, 

 Quercus coccinea Wang, woods VIII. 6 N.E.— Up.Miss. All. — Fla. 

 Quercus rubra L. woods VI. 5 N.Scot, — Up,Miss, Fla. — Tex, 



*From the locality on -nhich Croton glandulosus' was found only a few years ago (railroad 

 track) it may be concluded that it might be an immigrant from the southern part of Illinois. 



*"Carya porcina — No doubt single trees exist in the neigliborhood, althousjh I have not seen 

 such; for amongst the nuts of the common hickory, brought to market, single nuts of the tree were 

 observed. 



