Climate of Middle Illinois. 59 



Quercus Leana Nutt.* (coccinea x imbricaria) 1. 1 Oh. Ill, 

 Corylus ameiicana AValt. copses VIII. 10 Can.— Sask. Fla.— Tex. 

 Carpinus americana Michx. woods V. 3 N.Scot. — Up.Miss. Fla. — Tex. 

 Ostrya virgiuica Willd. woods V. 5 Can.— Up.Miss.— Winnipeg. Pla.— La. 



Salicaceae. In N. Am. 2 Gen. 68 Spec. 



Salix Candida Willd. swampy bottom I, 4. N.E.— Up.Miss.— Sask. 

 tSalix tristis Ait. dry hillsides I. 2. N.E.— All. (Ga.)— Up.Miss. 

 Salix humilis Marsh, dry hillsides V. 5. N.E.— All. (Ga.)— Up.Miss. 

 Salix discolor Muhl. banks bottom VII. 6. N.F.—N.Ca.—R.Mts.— Athabasca 



R.— Labr. 

 Salix sericea Marsh, (incl. S petiolata) banks bottom IV. 4. N.E.— Up.Miss. 



— Sask. 

 Salix cordata Muhl. var angustata bottom V. 5. N.E. — R.Mts.— Arct. 

 Salix nigra Marsh, bottom X. 8 N.Br. — Cal. Fla.— Ariz, 

 Salix amygdaloides Anders, bottom III. 4 N.Y.— Sask.— Or. Oh.— N.Mex. 

 Salix longifolia Muhl. bottom low banks VIII. 8 N.E.— La.— Ariz.— Cal. — 



Sask— 66° X.L. 

 Salix myrtilloides L. swampy bottom I, 4. N.E. — Up.Miss. — Arct. 

 Populus tremuloides Michx woods III. 5 N.F.- N.Mex. Cal.— Alaska— Huds. 



69° N.L. 

 Populus grandidentata Michx. wooded hillsides V. 5 N.Br.— Up.Miss,— All 



(N.Ca.) 

 Populus monilifera Ait. bottom X. 8 Vt.-Fla.-N.Mex.— R.Mts. 



Coniferae. In N. Am. 15 Gen. 82 Spec. 



.Tuniperus virginiana L. hillsides II. 4 N.Br.— Up.Miss, Fla,— Tex.— R.Mts. 



67° X.L. 

 jThuja occidentalis=^* L. swamps I, 1 N.Br.— All (N.Ca.)— Up.Miss,— Huds. 



Araceae. In N. Am. 9 Gen. 11 Spec. 



Arisaema triphyllum Torr. woods V. 4 Atl.— Up.Mo. G. — Can. 

 Arisaema Dracontium Schott woods IV. 3 Atl. — Miss. G. — Can. 

 Peltandra virginica Raf. swampy bottom II. 3 Atl.— Miss. G. — Can. 

 Symplocarpus foetidus Salisb. swampy bottom III. -5. N.E. — N.Ca. — Up. 



Miss. 

 Acorus calamus L. swamp II, 6 Atl.— Miss. G.— Can. 



Leranacese. In N.Am. 2 Gen. 9 Spec. 



Lemna trisulca L. waters III. 10 N.E.— N.Mex.— Cal.— 5.5° N.L. 

 Lemna minor L. waters V. 10 N.E.— Fla.— Mex.— Or.- 60° N.L. 

 Lemna polyrrhiza L. waters V. 10 Atl.— W.Tex. Nevada G.— 55° N.L. 

 Wolffia Columbiana Karsten waters 1. 10 N.E.— La. — Up.Miss. 



Typhaceae. In N.Am. 2 Gen. 5 Spec. 



Typha latifolia L. swamps, slough, banks III. 5 Atl. — Pacif. G.— 60° N.L. 

 Sparganium eurycarpum Engelm. banks, ditches V. 5 N.E. — Pa.— Or.— Slave 

 Lake. 



NajadacesB. In N.Am. 7 Gen. 29. Spec. 



Najas flexilis Rostk. Illinois R. II. 8 N.E.— Up.Miss. Fla.— W.Tex. 

 Zannichellia palustris L. creeks I. 10 N.Y.— Sask.— Or. Cal, W, Fla. — 

 Mex. 



*The only tree unfortunately was outlast year: It stood on the bluflf side near the western 

 city limits. 



**Thuja occidentalis is certainly extinct now in our flora, but in 1853 yet a large tree nearly 

 two feet in diameter stood in a swamp at the foot of the eastern bluff. The locality and the age of 

 the tree is against the belief that it was planted. 



